View 74AHCT244BQ_4679303.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1. general description the 74ahc244; 74ahct244 is a high-speed si-gate cmos device. the 74ahc244; 74ahct244 has octal non-inverting buffer/line drivers with 3-state outputs. the 3-state outputs are controlled by the output enable inputs (n oe). a high on n oe causes the outputs to assume a high-impedance off-state. 2. features n balanced propagation delays n all inputs have a schmitt-trigger action n inputs accepts voltages higher than v cc n for 74ahc244 only: operates with cmos input levels n for 74ahct244 only: operates with ttl input levels n esd protection: u hbm jesd22-a114e exceeds 2000 v u mm jesd22-a115-a exceeds 200 v u cdm jesd22-c101c exceeds 1000 v n multiple package options n speci?ed from - 40 c to +85 c and from - 40 c to +125 c 3. ordering information 74ahc244; 74ahct244 octal buffer/line driver; 3-state rev. 05 20 december 2007 product data sheet table 1. ordering information type number package temperature range name description version 74ahc244d - 40 c to +125 c so20 plastic small outline package; 20 leads; body width 7.5 mm sot163-1 74ahct244d 74ahc244pw - 40 c to +125 c tssop20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1 74ahct244pw 74ahc244bq - 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 74AHCT244BQ
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 2 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 4. functional diagram fig 1. functional diagram mna170 1a3 1a2 1a1 1a0 2 4 6 8 1 1y0 1y1 18 16 14 12 1y2 1y3 1oe 2a3 2a2 2a1 2a0 17 15 13 11 19 2y0 2y1 3 5 7 9 2y2 2y3 2oe fig 2. logic symbol fig 3. iec logic symbol mna874 8 6 4 2 1a0 1a1 1a2 1a3 1oe 18 16 1y0 1y1 1y2 1y3 14 12 1 11 13 15 17 2a0 2a1 2a2 2a3 2oe 3 5 2y0 2y1 2y2 2y3 7 9 19 12 14 2 4 6 8 18 16 1 en mna873 3 5 11 13 15 17 9 7 19 en
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 3 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 5. pinning information 5.1 pinning 5.2 pin description (1) the die substrate is attached to this pad using conductive die attach material. it can not be used as a supply pin or input. fig 4. pin con?guration so20, tssop20 fig 5. pin con?guration dhvqfn20 74ahc244 74ahct244 1oe v cc 1a0 2oe 2y0 1y0 1a1 2a0 2y1 1y1 1a2 2a1 2y2 1y2 1a3 2a2 2y3 1y3 gnd 2a3 001aae258 1 2 3 4 5 6 7 8 9 10 12 11 14 13 16 15 18 17 20 19 001aah079 74ahc244 74ahct244 transparent top view 1y3 gnd (1) 1a3 2y3 2a2 2y2 1y2 1a2 2a1 2y1 1y1 1a1 2a0 2y0 1y0 1a0 2oe gnd 2a3 1oe 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 2. pin description symbol pin description 1 oe 1 output enable input (active low) 1a[0:3] 2, 4, 6, 8 data input 2a[0:3] 17, 15, 13, 11 data input 1y[0:3] 18, 16, 14, 12 data output 2y[0:3] 3, 5, 7, 9 data output gnd 10 ground (0 v) 2 oe 19 output enable input (active low) v cc 20 supply voltage
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 4 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 6. functional description [1] h = high voltage level; l = low voltage level; x = dont care; z = high-impedance off-state. 7. limiting values [1] the input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] p tot derates linearly with 8 mw/k above 70 c. [3] p tot derates linearly with 5.5 mw/k above 60 c. [4] p tot derates linearly with 4.5 mw/k above 60 c. table 3. function table [1] control input output n oe nan nyn lll hh hxz table 4. 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 +7.0 v v i input voltage - 0.5 +7.0 v i ik input clamping current v i < - 0.5 v [1] - 20 - ma i ok output clamping current v o < - 0.5 v or v o >v cc + 0.5 v [1] - 20 ma i o output current v o = - 0.5 v to (v cc + 0.5 v) - 25 ma i cc supply current - 75 ma i gnd ground current - 75 - ma t stg storage temperature - 65 +150 c p tot total power dissipation t amb = - 40 c to +125 c so20 package [2] - 500 mw tssop20 package [3] - 500 mw dhvqfn20 package [4] - 500 mw
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 5 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 8. recommended operating conditions 9. static characteristics table 5. recommended operating conditions voltages are referenced to gnd (ground = 0 v). symbol parameter conditions 74ahc244 74ahct244 unit min typ max min typ max v cc supply voltage 2.0 5.0 5.5 4.5 5.0 5.5 v v i input voltage 0 - 5.5 0 - 5.5 v v o output voltage 0 - v cc 0- v cc v t amb ambient temperature - 40 +25 +125 - 40 +25 +125 c d t/ d v input transition rise and fall rate v cc = 3.3 v 0.3 v - - 100 - - - ns/v v cc = 5.0 v 0.5 v - - 20 - - 20 ns/v table 6. static characteristics voltages are referenced to gnd (ground = 0 v). symbol parameter conditions 25 c - 40 c to +85 c - 40 c to +125 c unit min typ max min max min max for type 74ahc244 v ih high-level input voltage v cc = 2.0 v 1.5 - - 1.5 - 1.5 - v v cc = 3.0 v 2.1 - - 2.1 - 2.1 - v v cc = 5.5 v 3.85 - - 3.85 - 3.85 - v v il low-level input voltage v cc = 2.0 v - - 0.5 - 0.5 - 0.5 v v cc = 3.0 v - - 0.9 - 0.9 - 0.9 v v cc = 5.5 v - - 1.65 - 1.65 - 1.65 v v oh high-level output voltage v i = v ih or v il i o = - 50 m a; v cc = 2.0 v 1.9 2.0 - 1.9 - 1.9 - v i o = - 50 m a; v cc = 3.0 v 2.9 3.0 - 2.9 - 2.9 - v i o = - 50 m a; v cc = 4.5 v 4.4 4.5 - 4.4 - 4.4 - v i o = - 4.0 ma; v cc = 3.0 v 2.58 - - 2.48 - 2.40 - v i o = - 8.0 ma; v cc = 4.5 v 3.94 - - 3.8 - 3.70 - v v ol low-level output voltage v i = v ih or v il i o = 50 m a; v cc = 2.0 v - 0 0.1 - 0.1 - 0.1 v i o = 50 m a; v cc = 3.0 v - 0 0.1 - 0.1 - 0.1 v i o = 50 m a; v cc = 4.5 v - 0 0.1 - 0.1 - 0.1 v i o = 4.0 ma; v cc = 3.0 v - - 0.36 - 0.44 - 0.55 v i o = 8.0 ma; v cc = 4.5 v - - 0.36 - 0.44 - 0.55 v i oz off-state output current v i =v ih or v il ; v o =v cc or gnd; v cc = 5.5 v -- 0.25 - 2.5 - 10.0 m a i i input leakage current v i = 5.5 v or gnd; v cc = 0 v to 5.5 v - - 0.1 - 1.0 - 2.0 m a i cc supply current v i =v cc or gnd; i o = 0 a; v cc = 5.5 v - - 4.0 - 40 - 80 m a
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 6 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state c i input capacitance - 3.0 10 - 10 - 10 pf c o output capacitance - 4.0 - - - - - pf for type 74ahct244 v ih high-level input voltage v cc = 4.5 v to 5.5 v 2.0 - - 2.0 - 2.0 - v v il low-level input voltage v cc = 4.5 v to 5.5 v - - 0.8 - 0.8 - 0.8 v v oh high-level output voltage v i = v ih or v il ; v cc = 4.5 v i o = - 50 m a 4.4 4.5 - 4.4 - 4.4 - v i o = - 8.0 ma 3.94 - - 3.8 - 3.70 - v v ol low-level output voltage v i = v ih or v il ; v cc = 4.5 v i o = 50 m a - 0 0.1 - 0.1 - 0.1 v i o = 8.0 ma - - 0.36 - 0.44 - 0.55 v i oz off-state output current per input pin; v i =v ih or v il ; v cc = 5.5 v; i o =0 a v o =v cc or gnd; other pins at v cc or gnd -- 0.25 - 2.5 - 10.0 m a i i input leakage current v i = 5.5 v or gnd; v cc = 0 v to 5.5 v - - 0.1 - 1.0 - 2.0 m a i cc supply current v i =v cc or gnd; i o = 0 a; v cc = 5.5 v - - 4.0 - 40 - 80 m a d i cc additional supply current per input pin; v i =v cc - 2.1 v; i o = 0 a; other pins at v cc or gnd; v cc = 4.5 v to 5.5 v - - 1.35 - 1.5 - 1.5 ma c i input capacitance - 3 10 - 10 - 10 pf c o output capacitance - 4.0 - - - - - pf table 6. static characteristics continued voltages are referenced to gnd (ground = 0 v). symbol parameter conditions 25 c - 40 c to +85 c - 40 c to +125 c unit min typ max min max min max
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 7 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 10. dynamic characteristics table 7. dynamic characteristics gnd = 0 v. for test circuit see figure 8 . symbol parameter conditions 25 c - 40 c to +85 c - 40 c to +125 c unit min typ [1] max min max min max for type 74ahc244 t pd propagation delay nan to nyn; see figure 6 [2] v cc = 3.0 v to 3.6 v c l = 15 pf - 5.0 8.4 1.0 10.0 1.0 10.5 ns c l = 50 pf - 7.0 11.9 1.0 13.5 1.0 15.0 ns v cc = 4.5 v to 5.5 v c l = 15 pf - 3.4 5.5 1.0 6.5 1.0 7.0 ns c l = 50 pf 5.0 7.5 1.0 8.5 1.0 9.5 ns t en enable time n oe to nyn; see figure 7 [2] v cc = 3.0 v to 3.6 v c l = 15 pf - 6.5 10.6 1.0 12.5 1.0 13.5 ns c l = 50 pf - 7.5 14.1 1.0 16.0 1.0 18.0 ns v cc = 4.5 v to 5.5 v c l = 15 pf - 4.0 7.3 1.0 8.5 1.0 9.5 ns c l = 50 pf - 5.5 9.3 1.0 10.5 1.0 12.0 ns t dis disable time n oe to nyn; see figure 7 [2] v cc = 3.0 v to 3.6 v c l = 15 pf - 5.5 9.7 1.0 11.0 1.0 12.5 ns c l = 50 pf - 10.0 14.0 1.0 16.0 1.0 17.5 ns v cc = 4.5 v to 5.5 v c l = 15 pf - 4.8 7.2 1.0 8.5 1.0 9.0 ns c l = 50 pf - 7.0 9.2 1.0 10.5 1.0 11.5 ns c pd power dissipation capacitance c l = 50 pf; f i = 1 mhz; v i = gnd to v cc [3] -10- - - - -pf
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 8 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state [1] typical values are measured at nominal supply voltage (v cc = 3.3 v and v cc = 5.0 v). [2] t pd is the same as t plh and t phl . t en is the same as t pzl and t pzh . t dis is the same as t plz and t phz . [3] c pd is used to determine the dynamic power dissipation p d ( m w). p d =c pd v cc 2 f i + ? (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 volts. 11. waveforms for type 74ahct244 t pd propagation delay nan to nyn; see figure 6 [2] v cc = 4.5 v to 5.5 v c l = 15 pf - 3.5 7.4 1.0 8.5 1.0 9.5 ns c l = 50 pf - 5.0 8.4 1.0 9.5 1.0 10.5 ns t en enable time n oe to nyn; see figure 7 v cc = 4.5 v to 5.5 v c l = 15 pf - 3.5 10.4 1.0 12.0 1.0 13.0 ns c l = 50 pf - 5.5 11.4 1.0 13.0 1.0 14.5 ns t dis disable time n oe to nyn; see figure 7 [2] v cc = 4.5 v to 5.5 v c l = 15 pf - 5.0 9.4 1.0 10.0 1.0 12.0 ns c l = 50 pf - 7.0 11.4 1.0 13.0 1.0 14.5 ns c pd power dissipation capacitance per buffer; c l =50pf;f=1 mhz; v i = gnd to v cc [3] -12- - - - -pf table 7. dynamic characteristics continued gnd = 0 v. for test circuit see figure 8 . symbol parameter conditions 25 c - 40 c to +85 c - 40 c to +125 c unit min typ [1] max min max min max measurement points are given in t ab le 8 . v ol and v oh are typical voltage output levels that occur with the output load. fig 6. propagation delay input (nan) to output (nyn) mna171 nan input nyn output t plh t phl gnd v i v m v m v m v m v oh v ol
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 9 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state measurement points are given in t ab le 8 . v ol and v oh are typical voltage output levels that occur with the output load. fig 7. enable and disable times 001aae014 t plz t phz outputs disabled outputs enabled v y v x outputs enabled nyn output low-to-off off-to-low nyn output high-to-off off-to-high noe input v i v ol v oh v cc v m gnd gnd t pzl t pzh v m v m table 8. measurement points type input output v m v m v x v y 74ahc244 0.5v cc 0.5v cc v ol + 0.3 v v oh - 0.3 v 74ahct244 1.5 v 0.5v cc v ol + 0.3 v v oh - 0.3 v
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 10 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state test data is given in t ab le 9 . 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 s1 = test selection switch fig 8. load circuitry for switching times v m v m t w t w 10 % 90 % 0 v v i v i negative pulse positive pulse 0 v v m v m 90 % 10 % t f t r t r t f 001aad983 dut v cc v cc v i v o r t r l s1 c l open pulse generator table 9. test data type input load s1 position v i t r , t f c l r l t phl , t plh t pzh , t phz t pzl , t plz 74ahc244 v cc 3.0 ns 15 pf, 50 pf 1 k w open gnd v cc 74ahct244 3.0 v 3.0 ns 15 pf, 50 pf 1 k w open gnd v cc
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 11 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 12. package outline 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
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 12 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state fig 10. 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
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 13 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state fig 11. 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
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 14 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 13. abbreviations 14. revision history table 10. abbreviations acronym description cdm charge device model cmos complementary metal oxide semiconductor dut device under test esd electrostatic discharge hbm human body model mm machine model ttl transistor-transistor logic table 11. revision history document id release date data sheet status change notice supersedes 74ahc_ahct244_5 20071220 product data sheet - 74ahc_ahct244_4 modi?cations: ? the format of this data sheet has been redesigned to comply with the new identity guidelines of nxp semiconductors. ? legal texts have been adapted to the new company name where appropriate. ? section 3 : dhvqfn20 package added. ? section 7 : derating values added for dhvqfn20 package. ? section 12 : outline drawing added for dhvqfn20 package. 74ahc_ahct244_4 20060210 product data sheet - 74ahc_ahct244_3 74ahc_ahct244_3 19990928 product speci?cation - 74ahc_ahct244_2 74ahc_ahct244_2 19990224 product speci?cation - 74ahc_ahct244_1 74ahc_ahct244_1 19980921 product speci?cation - -
74ahc_ahct244_5 ? nxp b.v. 2007. all rights reserved. product data sheet rev. 05 20 december 2007 15 of 16 nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state 15. legal information 15.1 data sheet status [1] please consult the most recently issued document before initiating or completing a design. [2] the term short data sheet is explained in section de?nitions. [3] the product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple dev ices. the latest product status information is available on the internet at url http://www .nxp .com . 15.2 de?nitions draft the document is a draft version only. the content is still under internal review and subject to formal approval, which may result in modi?cations or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. short data sheet a short data sheet is an extract from a full data sheet with the same product type number(s) and title. a short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. for detailed and full information see the relevant full data sheet, which is available on request via the local nxp semiconductors sales of?ce. in case of any inconsistency or con?ict with the short data sheet, the full data sheet shall prevail. 15.3 disclaimers general information in this document is believed to be accurate and reliable. however, nxp semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. right to make changes nxp semiconductors reserves the right to make changes to information published in this document, including without limitation speci?cations and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof. suitability for use nxp semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an nxp semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. nxp semiconductors accepts no liability for inclusion and/or use of nxp semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customers own risk. applications applications that are described herein for any of these products are for illustrative purposes only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the speci?ed use without further testing or modi?cation. limiting values stress above one or more limiting values (as de?ned in the absolute maximum ratings system of iec 60134) may cause permanent damage to the device. limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the characteristics sections of this document is not implied. exposure to limiting values for extended periods may affect device reliability. terms and conditions of sale nxp semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www .nxp .com/pro? le/ter ms , including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by nxp semiconductors. in case of any inconsistency or con?ict between information in this document and such terms and conditions, the latter will prevail. no offer to sell or license nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. 15.4 trademarks notice: all referenced brands, product names, service names and trademarks are the property of their respective owners. 16. contact information for additional information, please visit: http://www .nxp.com for sales of?ce addresses, send an email to: salesad dresses@nxp.com document status [1] [2] product status [3] de?nition objective [short] data sheet development this document contains data from the objective speci?cation for product development. preliminary [short] data sheet quali?cation this document contains data from the preliminary speci?cation. product [short] data sheet production this document contains the product speci?cation.
nxp semiconductors 74ahc244; 74ahct244 octal buffer/line driver; 3-state ? nxp b.v. 2007. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com date of release: 20 december 2007 document identifier: 74ahc_ahct244_5 please be aware that important notices concerning this document and the product(s) described herein, have been included in section legal information. 17. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 ordering information . . . . . . . . . . . . . . . . . . . . . 1 4 functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 5 pinning information . . . . . . . . . . . . . . . . . . . . . . 3 5.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 functional description . . . . . . . . . . . . . . . . . . . 4 7 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4 8 recommended operating conditions. . . . . . . . 5 9 static characteristics. . . . . . . . . . . . . . . . . . . . . 5 10 dynamic characteristics . . . . . . . . . . . . . . . . . . 7 11 waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 12 package outline . . . . . . . . . . . . . . . . . . . . . . . . 11 13 abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14 14 revision history . . . . . . . . . . . . . . . . . . . . . . . . 14 15 legal information. . . . . . . . . . . . . . . . . . . . . . . 15 15.1 data sheet status . . . . . . . . . . . . . . . . . . . . . . 15 15.2 de?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 15.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 15.4 trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 16 contact information. . . . . . . . . . . . . . . . . . . . . 15 17 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

▲Up To Search▲

Price & Availability of 74AHCT244BQ

	To Download 74AHCT244BQ Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .