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1. general description the 74hc245; 74hct245 is a high-speed si-gate cmos device and is pin compatible with low-power schottky ttl (lsttl). the 74hc245; 74hct245 is an octal transceiver featuring non-inverting 3-state bus compatible outputs in both send and receive directions. the 74hc245; 74hct245 features an output enable input ( oe) for easy cascading and a send/receive input (dir) for direction control. oe controls the outputs so that the buses are effectively isolated. the 74hc245; 74hct245 is similar to the 74hc640; 74hct640 but has true (non-inverting) outputs. 2. features n octal bidirectional bus interface n non-inverting 3-state outputs n multiple package options n complies with jedec standard no. 7a n esd protection: u hbm eia/jesd22-a114-b exceeds 2000 v u mm eia/jesd22-a115-a exceeds 200 v n speci?ed from - 40 cto+85 c and from - 40 c to +125 c 3. quick reference data 74hc245; 74hct245 octal bus tranceiver; 3-state rev. 03 31 january 2005 product data sheet table 1: quick reference data gnd = 0 v; t amb =25 c; t r =t f = 6 ns. symbol parameter conditions min typ max unit type 74hc245 t phl , t plh propagation delay an to bn or bn to an c l =15pf; v cc =5v -7-ns c i input capacitance - 3.5 - pf c i/o input/output capacitance - 10 - pf c pd power dissipation capacitance per transceiver v i = gnd to v cc [1] -30-pf type 74hct245 t phl , t plh propagation delay an to bn or bn to an c l =15pf; v cc =5v -10-ns
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 2 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state [1] c pd is used to determine the dynamic power dissipation (p d in m w): p d =c pd v cc 2 f i n+ ? (c l v cc 2 f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = output load capacitance in pf; v cc = supply voltage in v; n = number of inputs switching; ? (c l v cc 2 f o ) = sum of outputs. 4. ordering information c i input capacitance - 3.5 - pf c i/o input/output capacitance - 10 - pf c pd power dissipation capacitance per transceiver v i = gnd to v cc - 1.5 v [1] -30-pf table 1: quick reference data continued gnd = 0 v; t amb =25 c; t r =t f = 6 ns. symbol parameter conditions min typ max unit table 2: ordering information type number package temperature range name description version 74hc245n - 40 c to +125 c dip20 plastic dual in-line package; 20 leads (300 mil) sot146-1 74hc245d - 40 c to +125 c so20 plastic small outline package; 20 leads; body width 7.5 mm sot163-1 74hc245pw - 40 c to +125 c tssop20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1 74hc245db - 40 c to +125 c ssop20 plastic shrink small outline package; 20 leads; body width 5.3 mm sot339-1 74hc245bq - 40 c to +125 c dhvqfn20 plastic dual-in-line compatible thermal enhanced very thin quad ?at package no leads; 20 terminals; body 2.5 4.5 0.85 mm sot764-1 74hct245n - 40 c to +125 c dip20 plastic dual in-line package; 20 leads (300 mil) sot146-1 74hct245d - 40 c to +125 c so20 plastic small outline package; 20 leads; body width 7.5 mm sot163-1 74hct245pw - 40 c to +125 c tssop20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1 74HCT245DB - 40 c to +125 c ssop20 plastic shrink small outline package; 20 leads; body width 5.3 mm sot339-1 74hct245bq - 40 c to +125 c dhvqfn20 plastic dual-in-line compatible thermal enhanced very thin quad ?at package no leads; 20 terminals; body 2.5 4.5 0.85 mm sot764-1
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 3 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 5. functional diagram fig 1. logic symbol fig 2. iec logic symbol 2 1 dir 18 19 b0 b1 b2 b3 b4 b5 b6 b7 3 17 4 16 5 15 6 14 7 13 8 12 9 a0 a1 a2 a3 a4 a5 a6 a7 11 oe mna174 17 3 1 19 2 1 16 4 15 5 14 6 13 7 12 8 11 9 18 g3 3en1 3en2 2 mna175
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 4 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 6. pinning information 6.1 pinning 6.2 pin description (1) the die substrate is attached to this pad using conductive die attach material. it can not be used as supply pin or input fig 3. pin con?guration dip20, so20, ssop20 and tssop20 fig 4. pin con?guration dhvqfn20 245 dir v cc a0 oe a1 b0 a2 b1 a3 b2 a4 b3 a5 b4 a6 b5 a7 b6 gnd b7 001aac431 1 2 3 4 5 6 7 8 9 10 12 11 14 13 16 15 18 17 20 19 001aac432 245 gnd (1) transparent top view b6 a6 a7 b5 a5 b4 a4 b3 a3 b2 a2 b1 a1 b0 a0 oe gnd b7 dir v cc 9 12 8 13 7 14 6 15 5 16 4 17 3 18 2 19 10 11 1 20 terminal 1 index area table 3: pin description symbol pin description dir 1 direction control a0 2 data input/output a1 3 data input/output a2 4 data input/output a3 5 data input/output a4 6 data input/output a5 7 data input/output a6 8 data input/output a7 9 data input/output gnd 10 ground (0 v) b7 11 data input/output b6 12 data input/output b5 13 data input/output b4 14 data input/output b3 15 data input/output b2 16 data input/output
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 5 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 7. functional description 7.1 function table [1] h = high voltage level; l = low voltage level; x = dont care; z = high-impedance off-state. 8. limiting values [1] for dip20 packages: above 70 c, p tot derates linearly with 12 mw/k. for so20 packages: above 70 c, p tot derates linearly with 8 mw/k. for ssop20 and tssop20 packages: above 60 c, p tot derates linearly with 5.5 mw/k. for dhvqfn20 packages: above 60 c, p tot derates linearly with 4.5 mw/k. b1 17 data input/output b0 18 data input/output oe 19 output enable input (active low) v cc 20 supply voltage table 3: pin description continued symbol pin description table 4: function table [1] input input/output oe dir an bn l l a = b input l h input b = a hxz z table 5: limiting values in accordance with the absolute maximum rating system (iec 60134). voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min max unit v cc supply voltage - 0.5 +7 v i ik input diode current v i < - 0.5 v or v i >v cc + 0.5 v - 20 ma i ok output diode current v o < - 0.5 v or v o >v cc + 0.5 v - 20 ma i o output source or sink current v o = - 0.5 v to v cc + 0.5 v - 35 ma i cc , i gnd v cc or gnd current - 70 ma t stg storage temperature - 65 +150 c p tot total power dissipation [1] dip20 package - 750 mw so20, ssop20, tssop20 and dhvqfn20 packages - 500 mw
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 6 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 9. recommended operating conditions 10. static characteristics table 6: recommended operating conditions symbol parameter conditions min typ max unit type 74hc245 v cc supply voltage 2.0 5.0 6.0 v v i input voltage 0 - v cc v v o output voltage 0 - v cc v t r , t f input rise and fall times v cc = 2.0 v - - 1000 ns v cc = 4.5 v - 6.0 500 ns v cc = 6.0 v - - 400 ns t amb ambient temperature - 40 - +125 c type 74hct245 v cc supply voltage 4.5 5.0 5.5 v v i input voltage 0 - v cc v v o output voltage 0 - v cc v t r , t f input rise and fall times v cc = 4.5 v - 6.0 500 ns t amb ambient temperature - 40 - +125 c table 7: static characteristics type 74hc245 at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit t amb =25 c v ih high-level input voltage v cc = 2.0 v 1.5 1.2 - v v cc = 4.5 v 3.15 2.4 - v v cc = 6.0 v 4.2 3.2 - v v il low-level input voltage v cc = 2.0 v - 0.8 0.5 v v cc = 4.5 v - 2.1 1.35 v v cc = 6.0 v - 2.8 1.8 v v oh high-level output voltage v i =v ih or v il i o = - 20 m a; v cc = 2.0 v 1.9 2.0 - v i o = - 20 m a; v cc = 4.5 v 4.4 4.5 - v i o = - 20 m a; v cc = 6.0 v 5.9 6.0 - v i o = - 6.0 ma; v cc = 4.5 v 3.98 4.32 - v i o = - 7.8 ma; v cc = 6.0 v 5.48 5.81 - v
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 7 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state v ol low-level output voltage v i =v ih or v il i o =20 m a; v cc = 2.0 v - 0 0.1 v i o =20 m a; v cc = 4.5 v - 0 0.1 v i o =20 m a; v cc = 6.0 v - 0 0.1 v i o = 6.0 ma; v cc = 4.5 v - 0.15 0.26 v i o = 7.8 ma; v cc = 6.0 v - 0.16 0.26 v i li input leakage current v i =v cc or gnd; v cc = 6.0 v - - 0.1 m a i oz off-state output current v i =v ih or v il ; v o =v cc or gnd; v cc = 6.0 v -- 0.5 m a i cc quiescent supply current v i =v cc or gnd; i o =0a; v cc = 6.0 v - - 8.0 m a c i input capacitance - 3.5 - pf c i/o input/output capacitance - 10 - pf t amb = - 40 c to +85 c v ih high-level input voltage v cc = 2.0 v 1.5 - - v v cc = 4.5 v 3.15 - - v v cc = 6.0 v 4.2 - - v v il low-level input voltage v cc = 2.0 v - - 0.5 v v cc = 4.5 v - - 1.35 v v cc = 6.0 v - - 1.8 v v oh high-level output voltage v i =v ih or v il i o = - 20 m a; v cc = 2.0 v 1.9 - - v i o = - 20 m a; v cc = 4.5 v 4.4 - - v i o = - 20 m a; v cc = 6.0 v 5.9 - - v i o = - 6.0 ma; v cc = 4.5 v 3.84 - - v i o = - 7.8 ma; v cc = 6.0 v 5.34 - - v v ol low-level output voltage v i =v ih or v il i o =20 m a; v cc = 2.0 v - - 0.1 v i o =20 m a; v cc = 4.5 v - - 0.1 v i o =20 m a; v cc = 6.0 v - - 0.1 v i o = 6.0 ma; v cc = 4.5 v - - 0.33 v i o = 7.8 ma; v cc = 6.0 v - - 0.33 v i li input leakage current v i =v cc or gnd; v cc = 6.0 v - - 1.0 m a i oz off-state output current v i =v ih or v il ; v o =v cc or gnd; v cc = 6.0 v -- 5.0 m a i cc quiescent supply current v i =v cc or gnd; i o =0a; v cc = 6.0 v --80 m a t amb = - 40 c to +125 c v ih high-level input voltage v cc = 2.0 v 1.5 - - v v cc = 4.5 v 3.15 - - v v cc = 6.0 v 4.2 - - v table 7: static characteristics type 74hc245 continued at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 8 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state v il low-level input voltage v cc = 2.0 v - - 0.5 v v cc = 4.5 v - - 1.35 v v cc = 6.0 v - - 1.8 v v oh high-level output voltage v i =v ih or v il - i o = - 20 m a; v cc = 2.0 v 1.9 - - v i o = - 20 m a; v cc = 4.5 v 4.4 - - v i o = - 20 m a; v cc = 6.0 v 5.9 - - v i o = - 6.0 ma; v cc = 4.5 v 3.7 - - v i o = - 7.8 ma; v cc = 6.0 v 5.2 - - v v ol low-level output voltage v i =v ih or v il - i o =20 m a; v cc = 2.0 v - - 0.1 v i o =20 m a; v cc = 4.5 v - - 0.1 v i o =20 m a; v cc = 6.0 v - - 0.1 v i o = 6.0 ma; v cc = 4.5 v - - 0.4 v i o = 7.8 ma; v cc = 6.0 v - - 0.4 v i li input leakage current v i =v cc or gnd; v cc = 6.0 v - - 1.0 m a i oz off-state output current v i =v ih or v il ; v o =v cc or gnd; v cc = 6.0 v -- 10.0 m a i cc quiescent supply current v i =v cc or gnd; i o =0a; v cc = 6.0 v - - 160 m a table 7: static characteristics type 74hc245 continued at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit table 8: static characteristics type 74hct245 at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit t amb =25 c v ih high-level input voltage v cc = 4.5 v to 5.5 v 2.0 1.6 - v v il low-level input voltage v cc = 4.5 v to 5.5 v - 1.2 0.8 v v oh high-level output voltage v i =v ih or v il ; v cc = 4.5 v i o = - 20 m a 4.4 4.5 - v i o = - 6 ma 3.98 4.32 - v v ol low-level output voltage v i =v ih or v il ; v cc = 4.5 v i o =20 m a - 0 0.1 v i o = 6.0 ma - 0.15 0.26 v i li input leakage current v i =v cc or gnd; v cc = 5.5 v - - 0.1 m a i oz off-state output current v i =v ih or v il ; v cc = 5.5 v; v o =v cc or gnd per input pin; other inputs at v cc or gnd; i o =0a -- 0.5 m a i cc quiescent supply current v i =v cc or gnd; i o =0a; v cc = 5.5 v - - 8.0 m a
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 9 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state d i cc additional quiescent supply current per input pin v i =v cc - 2.1 v; other inputs at v i =v cc or gnd; v cc = 4.5 v to 5.5 v; i o =0a an or bn inputs - 40 144 m a oe input - 150 540 m a dir input - 90 324 m a c i input capacitance - 3.5 - pf c i/o input/output capacitance - 10 - pf t amb = - 40 c to +85 c v ih high-level input voltage v cc = 4.5 v to 5.5 v 2.0 - - v v il low-level input voltage v cc = 4.5 v to 5.5 v - - 0.8 v v oh high-level output voltage v i =v ih or v il ; v cc = 4.5 v i o = - 20 m a 4.4 - - v i o = - 6 ma 3.84 - - v v ol low-level output voltage v i =v ih or v il ; v cc = 4.5 v i o =20 m a - - 0.1 v i o = 6.0 ma - - 0.33 v i li input leakage current v i =v cc or gnd; v cc = 5.5 v - - 1.0 m a i oz off-state output current v i =v ih or v il ; v cc = 5.5 v; v o =v cc or gnd per input pin; other inputs at v cc or gnd; i o =0a -- 5.0 m a i cc quiescent supply current v i =v cc or gnd; i o =0a; v cc = 5.5 v --80 m a d i cc additional quiescent supply current per input pin v i =v cc - 2.1 v; other inputs at v i =v cc or gnd; v cc = 4.5 v to 5.5 v; i o =0a an or bn inputs - - 180 m a oe input - - 675 m a dir input - - 405 m a t amb = - 40 c to +125 c v ih high-level input voltage v cc = 4.5 v to 5.5 v 2.0 - - v v il low-level input voltage v cc = 4.5 v to 5.5 v - - 0.8 v v oh high-level output voltage v i =v ih or v il ; v cc = 4.5 v i o = - 20 m a 4.4 - - v i o = - 6 ma 3.7 - - v v ol low-level output voltage v i =v ih or v il ; v cc = 4.5 v i o =20 m a - - 0.1 v i o = 6.0 ma - - 0.4 v i li input leakage current v i =v cc or gnd; v cc = 5.5 v - - 1.0 m a i oz off-state output current v i =v ih or v il ; v cc = 5.5 v; v o =v cc or gnd per input pin; other inputs at v cc or gnd; i o =0a -- 10 m a table 8: static characteristics type 74hct245 continued at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 10 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 11. dynamic characteristics i cc quiescent supply current v i =v cc or gnd; i o =0a; v cc = 5.5 v - - 160 m a d i cc additional quiescent supply current per input pin v i =v cc - 2.1 v; other inputs at v i =v cc or gnd; v cc = 4.5 v to 5.5 v; i o =0a an or bn inputs - - 196 m a oe input - - 735 m a dir input - - 441 m a table 8: static characteristics type 74hct245 continued at recommended operating conditions; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit table 9: dynamic characteristics type 74hc245 gnd = 0 v; test circuit see figure 7 . symbol parameter conditions min typ max unit t amb = 25 c t phl , t plh propagation delay an to bn or bn to an see figure 5 v cc = 2.0 v - 25 90 ns v cc = 4.5 v - 9 18 ns v cc = 5.0 v; c l =15pf - 7 - ns v cc = 6.0 v - 7 15 ns t pzh , t pzl 3-state output enable time oe to an or oe to bn see figure 6 v cc = 2.0 v - 30 150 ns v cc = 4.5 v - 11 30 ns v cc = 6.0 v - 9 26 ns t phz , t plz 3-state output disable time oe to an or oe to bn see figure 6 v cc = 2.0 v - 41 150 ns v cc = 4.5 v - 15 30 ns v cc = 6.0 v - 12 26 ns t thl , t tlh output transition time see figure 5 v cc = 2.0 v - 14 60 ns v cc = 4.5 v - 5 12 ns v cc = 6.0 v - 4 10 ns c pd power dissipation capacitance per transceiver v i = gnd to v cc [1] -30-pf t amb = - 40 c to +85 c t phl , t plh propagation delay an to bn or bn to an see figure 5 v cc = 2.0 v - - 115 ns v cc = 4.5 v - - 23 ns v cc = 6.0 v - - 20 ns
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 11 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state [1] c pd is used to determine the dynamic power dissipation (p d in m w): p d =c pd v cc 2 f i n+ ? (c l v cc 2 f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = output load capacitance in pf; v cc = supply voltage in v; n = number of inputs switching; ? (c l v cc 2 f o ) = sum of outputs. t pzh , t pzl 3-state output enable time oe to an or oe to bn see figure 6 v cc = 2.0 v - - 190 ns v cc = 4.5 v - - 38 ns v cc = 6.0 v - - 33 ns t phz , t plz 3-state output disable time oe to an or oe to bn see figure 6 v cc = 2.0 v - - 190 ns v cc = 4.5 v - - 38 ns v cc = 6.0 v - - 33 ns t thl , t tlh output transition time see figure 5 v cc = 2.0 v - - 75 ns v cc = 4.5 v - - 15 ns v cc = 6.0 v - - 13 ns t amb = - 40 c to +125 c t phl , t plh propagation delay an to bn or bn to an see figure 5 v cc = 2.0 v - - 135 ns v cc = 4.5 v - - 27 ns v cc = 6.0 v - - 23 ns t pzh , t pzl 3-state output enable time oe to an or oe to bn see figure 6 v cc = 2.0 v - - 225 ns v cc = 4.5 v - - 45 ns v cc = 6.0 v - - 38 ns t phz , t plz 3-state output disable time oe to an or oe to bn see figure 6 v cc = 2.0 v - - 225 ns v cc = 4.5 v - - 45 ns v cc = 6.0 v - - 38 ns t thl , t tlh output transition time see figure 5 v cc = 2.0 v - - 90 ns v cc = 4.5 v - - 18 ns v cc = 6.0 v - - 15 ns table 9: dynamic characteristics type 74hc245 continued gnd = 0 v; test circuit see figure 7 . symbol parameter conditions min typ max unit
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 12 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state [1] c pd is used to determine the dynamic power dissipation (p d in m w): p d =c pd v cc 2 f i n+ ? (c l v cc 2 f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = output load capacitance in pf; v cc = supply voltage in v; n = number of inputs switching; ? (c l v cc 2 f o ) = sum of outputs. table 10: dynamic characteristics type 74hct245 gnd = 0 v; test circuit see figure 7 . symbol parameter conditions min typ max unit t amb = 25 c t phl , t plh propagation delay an to bn or bn to an see figure 5 v cc = 4.5 v - 12 22 ns v cc = 5.0 v; c l =15pf - 10 - ns t pzh , t pzl 3-state output enable time oe to an or oe to bn v cc = 4.5 v; see figure 6 - 1630ns t phz , t plz 3-state output disable time oe to an or oe to bn v cc = 4.5 v; see figure 6 - 1630ns t thl , t tlh output transition time v cc = 4.5 v; see figure 5 - 5 12 ns c pd power dissipation capacitance per transceiver v i = gnd to v cc - 1.5 v [1] -30-pf t amb = - 40 c to +85 c t phl , t plh propagation delay an to bn or bn to an v cc = 4.5 v; see figure 5 --28ns t pzh , t pzl 3-state output enable time oe to an or oe to bn v cc = 4.5 v; see figure 6 --38ns t phz , t plz 3-state output disable time oe to an or oe to bn v cc = 4.5 v; see figure 6 --38ns t thl , t tlh output transition time v cc = 4.5 v; see figure 5 --15ns t amb = - 40 c to +125 c t phl , t plh propagation delay an to bn or bn to an v cc = 4.5 v; see figure 5 --33ns t pzh , t pzl 3-state output enable time oe to an or oe to bn v cc = 4.5 v; see figure 6 --45ns t phz , t plz 3-state output disable time oe to an or oe to bn v cc = 4.5 v; see figure 6 --45ns t thl , t tlh output transition time v cc = 4.5 v; see figure 5 --18ns
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 13 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 12. waveforms measurement points are given in t ab le 11 . v ol and v oh are typical voltage output drop that occur with the output load. fig 5. input (an, bn) to output (bn, an) propagation delays and output transition times measurement points are given in t ab le 11 . v ol and v oh are typical voltage output drop that occur with the output load. fig 6. 3-state output enable and disable times table 11: measurement points type input output v m v m 74hc245 0.5v cc 0.5v cc 74hct245 1.3 v 1.3 v 001aac433 t plh t phl v m v m 90 % 10 % v m v m bn, an output an, bn input v i gnd v oh v ol t tlh t thl 001aac479 t plz t phz outputs disabled outputs enabled 90 % 10 % outputs enabled oe input v i v cc v ol v oh gnd gnd v m t pzl t pzh v m v m output low-to-off off-to-low output high-to-off off-to-high t r t f 90 % 10 %
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 14 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state test data is given in t ab le 12 . de?nitions test circuit: r t = termination resistance should be equal to output impedance z o of the pulse generator. c l = load capacitance including jig and probe capacitance. r l = load resistor. fig 7. load circuitry for switching times table 12: test data type input test v i t r , t f t phl , t plh t pzh , t phz t pzl , t plz 74hc245 v cc 6 ns open gnd v cc 74hct245 3 v 6 ns open gnd v cc mgk563 d.u.t v cc v cc v i v o r t r l = 1 k w c l 50 pf open pulse generator
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 15 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 13. package outline fig 8. package outline sot146-1 (dip20) unit a max. 1 2 b 1 cd e e m h l references outline version european projection issue date iec jedec jeita mm inches dimensions (inch dimensions are derived from the original mm dimensions) sot146-1 99-12-27 03-02-13 a min. a max. b z max. w m e e 1 1.73 1.30 0.53 0.38 0.36 0.23 26.92 26.54 6.40 6.22 3.60 3.05 0.254 2.54 7.62 8.25 7.80 10.0 8.3 2 4.2 0.51 3.2 0.068 0.051 0.021 0.015 0.014 0.009 1.060 1.045 0.25 0.24 0.14 0.12 0.01 0.1 0.3 0.32 0.31 0.39 0.33 0.078 0.17 0.02 0.13 sc-603 ms-001 m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 20 1 11 10 b e pin 1 index 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. (1) (1) (1) dip20: plastic dual in-line package; 20 leads (300 mil) sot146-1
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 16 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state fig 9. package outline sot163-1 (so20) unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p q z y w v q references outline version european projection issue date iec jedec jeita mm inches 2.65 0.3 0.1 2.45 2.25 0.49 0.36 0.32 0.23 13.0 12.6 7.6 7.4 1.27 10.65 10.00 1.1 1.0 0.9 0.4 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 1.1 0.4 sot163-1 10 20 w m b p detail x z e 11 1 d y 0.25 075e04 ms-013 pin 1 index 0.1 0.012 0.004 0.096 0.089 0.019 0.014 0.013 0.009 0.51 0.49 0.30 0.29 0.05 1.4 0.055 0.419 0.394 0.043 0.039 0.035 0.016 0.01 0.25 0.01 0.004 0.043 0.016 0.01 0 5 10 mm scale x q a a 1 a 2 h e l p q e c l v m a (a ) 3 a so20: plastic small outline package; 20 leads; body width 7.5 mm sot163-1 99-12-27 03-02-19
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 17 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state fig 10. package outline sot339-1 (ssop20) unit a 1 a 2 a 3 b p cd (1) e (1) eh e ll p q (1) z y w v q references outline version european projection issue date iec jedec jeita mm 0.21 0.05 1.80 1.65 0.38 0.25 0.20 0.09 7.4 7.0 5.4 5.2 0.65 7.9 7.6 0.9 0.7 0.9 0.5 8 0 o o 0.13 1.25 0.2 0.1 dimensions (mm are the original dimensions) note 1. plastic or metal protrusions of 0.2 mm maximum per side are not included. 1.03 0.63 sot339-1 mo-150 99-12-27 03-02-19 x w m q a a 1 a 2 b p d h e l p q detail x e z e c l v m a (a ) 3 a 110 20 11 y 0.25 pin 1 index 0 2.5 5 mm scale ssop20: plastic shrink small outline package; 20 leads; body width 5.3 mm sot339-1 a max. 2
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 18 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state fig 11. package outline sot360-1 (tssop20) unit a 1 a 2 a 3 b p cd (1) e (2) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm 0.15 0.05 0.95 0.80 0.30 0.19 0.2 0.1 6.6 6.4 4.5 4.3 0.65 6.6 6.2 0.4 0.3 0.5 0.2 8 0 o o 0.13 0.1 0.2 1 dimensions (mm are the original dimensions) notes 1. plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. plastic interlead protrusions of 0.25 mm maximum per side are not included. 0.75 0.50 sot360-1 mo-153 99-12-27 03-02-19 w m b p d z e 0.25 110 20 11 pin 1 index q a a 1 a 2 l p q detail x l (a ) 3 h e e c v m a x a y 0 2.5 5 mm scale tssop20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1 a max. 1.1
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 19 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state fig 12. package outline sot764-1 (dhvqfn20) terminal 1 index area 0.5 1 a 1 e h b unit y e 0.2 c references outline version european projection issue date iec jedec jeita mm 4.6 4.4 d h 3.15 2.85 y 1 2.6 2.4 1.15 0.85 e 1 3.5 0.30 0.18 0.05 0.00 0.05 0.1 dimensions (mm are the original dimensions) sot764-1 mo-241 - - - - - - 0.5 0.3 l 0.1 v 0.05 w 0 2.5 5 mm scale sot764-1 dhvqfn20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 20 terminals; body 2.5 x 4.5 x 0.85 mm a (1) max. a a 1 c detail x y y 1 c e l e h d h e e 1 b 29 19 12 11 10 1 20 x d e c b a terminal 1 index area a c c b v m w m e (1) note 1. plastic or metal protrusions of 0.075 mm maximum per side are not included. d (1) 02-10-17 03-01-27
9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 20 of 22 philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 14. revision history table 13: revision history document id release date data sheet status change notice doc. number supersedes 74hc_hct245_3 20050131 product data sheet - 9397 750 14502 74hc_hct245_cnv_2 modi?cations: ? the format of this data sheet is redesigned to comply with the new presentation and information standard of philips semiconductors ? section 4 order ing inf or mation , section 6 pinning inf or mation and section 13 p ac kage outline are modi?ed to include the dhvqfn20 package. 74hc_hct245_cnv_2 19930930 product speci?cation - - -
philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 9397 750 14502 ? koninklijke philips electronics n.v. 2005. all rights reserved. product data sheet rev. 03 31 january 2005 21 of 22 15. data sheet status [1] please consult the most recently issued data sheet before initiating or completing a design. [2] the product status of the device(s) described in this data sheet may have changed since this data sheet was published. the l atest information is available on the internet at url http://www.semiconductors.philips.com. [3] for data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. 16. de?nitions short-form speci?cation the data in a short-form speci?cation is extracted from a full data sheet with the same type number and title. for detailed information see the relevant data sheet or data handbook. limiting values de?nition limiting values given are in accordance with the absolute maximum rating system (iec 60134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the speci?cation is not implied. exposure to limiting values for extended periods may affect device reliability. application information applications that are described herein for any of these products are for illustrative purposes only. philips semiconductors make no representation or warranty that such applications will be suitable for the speci?ed use without further testing or modi?cation. 17. disclaimers life support these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips semiconductors for any damages resulting from such application. right to make changes philips semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. when the product is in full production (status production), relevant changes will be communicated via a customer product/process change noti?cation (cpcn). philips semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise speci?ed. 18. contact information for additional information, please visit: http://www.semiconductors.philips.com for sales of?ce addresses, send an email to: sales.addresses@www.semiconductors.philips.com level data sheet status [1] product status [2] [3] de?nition i objective data development this data sheet contains data from the objective speci?cation for product development. philips semiconductors reserves the right to change the speci?cation in any manner without notice. ii preliminary data quali?cation this data sheet contains data from the preliminary speci?cation. supplementary data will be published at a later date. philips semiconductors reserves the right to change the speci?cation without notice, in order to improve the design and supply the best possible product. iii product data production this data sheet contains data from the product speci?cation. philips semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. relevant changes will be communicated via a customer product/process change noti?cation (cpcn).
? koninklijke philips electronics n.v. 2005 all rights are reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. date of release: 31 january 2005 document number: 9397 750 14502 published in the netherlands philips semiconductors 74hc245; 74hct245 octal bus tranceiver; 3-state 19. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 quick reference data . . . . . . . . . . . . . . . . . . . . . 1 4 ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 functional diagram . . . . . . . . . . . . . . . . . . . . . . 3 6 pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 functional description . . . . . . . . . . . . . . . . . . . 5 7.1 function table . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5 9 recommended operating conditions. . . . . . . . 6 10 static characteristics. . . . . . . . . . . . . . . . . . . . . 6 11 dynamic characteristics . . . . . . . . . . . . . . . . . 10 12 waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 13 package outline . . . . . . . . . . . . . . . . . . . . . . . . 15 14 revision history . . . . . . . . . . . . . . . . . . . . . . . . 20 15 data sheet status . . . . . . . . . . . . . . . . . . . . . . . 21 16 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 17 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 18 contact information . . . . . . . . . . . . . . . . . . . . 21

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