? semiconductor components industries, llc, 2000 may, 2000 rev. 9 1 publication order number: mc74hct245a/d
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! "! highperformance silicongate cmos the mc74hct245a is identical in pinout to the ls245. this device may be used as a level converter for interfacing ttl or nmos outputs to high speed cmos inputs. the mc74hct245a is a 3state noninverting transceiver that is used for 2way asynchronous communication between data buses. the device has an activelow output enable pin, which is used to place the i/o ports into highimpedance states. the direction control determines whether data flows from a to b or from b to a. ? output drive capability: 15 lsttl loads ? ttl/nmos compatible input levels ? outputs directly interface to cmos, nmos and ttl ? operating voltage range: 4.5 to 5.5 v ? low input current: 1.0 m a ? in compliance with the requirements defined by jedec standard no. 7a ? chip complexity: 304 fets or 76 equivalent gates logic diagram a data port a8 a7 a6 a5 a3 a4 a2 a1 9 8 7 6 5 4 3 2 direction output enable 1 19 pin 20 = v cc pin 10 = gnd 18 17 16 15 14 13 12 11 b1 b2 b3 b4 b5 b6 b7 b8 b data port ?????????? ?????????? design criteria ??? ??? value ??? ??? units ?????????? ?????????? internal gate count* ??? ??? 76 ??? ??? ea ?????????? ?????????? internal gate propagation delay ??? ??? 1.0 ??? ??? ns ?????????? ?????????? internal gate power dissipation ??? ??? 5.0 ??? ??? m w ?????????? ?????????? speed power product ??? ??? 0.005 ??? ??? pj *equivalent to a twoinput nand gate. function table control inputs output enable direction operation l l data transmitted from bus b to bus a l h data transmitted from bus a to bus b h x buses isolated (highimpedance state) x = don't care http://onsemi.com marking diagrams 1 20 a = assembly location wl = wafer lot yy = year ww = work week soic wide20 dw suffix case 751d hct245a awlyyww pdip20 n suffix case 738 1 20 mc74hct245an awlyyww tssop20 dt suffix case 948e 1 20 1 20 1 20 device package shipping ordering information mc74hct245an pdip20 1440 / box mc74hct245adw soicwide 38 / rail mc74hct245adwr2 soicwide 1000 / reel mc74hct245adt tssop20 75 / rail mc74hct245adtr2 tssop20 2500 / reel hct 245a alyw 1 20 pin assignment a5 a3 a2 a1 direction gnd a8 a7 a6 a4 5 4 3 2 1 10 9 8 7 6 14 15 16 17 18 19 20 11 12 13 b3 b2 b1 output enable v cc b8 b7 b6 b5 b4
mc74hct245a http://onsemi.com 2 ??????????????????????? ??????????????????????? maximum ratings* ???? ???? symbol ?????????????? ?????????????? parameter ????? ????? value ??? ??? unit ???? ???? v cc ?????????????? ?????????????? dc supply voltage (referenced to gnd) ????? ????? 0.5 to + 7.0 ??? ??? v ???? ???? v in ?????????????? ?????????????? dc input voltage (referenced to gnd) ????? ????? 0.5 to v cc + 0.5 ??? ??? v ???? ???? v out ?????????????? ?????????????? dc output voltage (referenced to gnd) ????? ????? 0.5 to v cc + 0.5 ??? ??? v ???? ???? i in ?????????????? ?????????????? dc input current, per pin ????? ????? 20 ??? ??? ma ???? ???? i out ?????????????? ?????????????? dc output current, per pin ????? ????? 35 ??? ??? ma ???? ???? i cc ?????????????? ?????????????? dc supply current, v cc and gnd pins ????? ????? 75 ??? ??? ma ???? ? ?? ? ???? p d ?????????????? ? ???????????? ? ?????????????? power dissipation in still air, plastic dip2 soic package2 tssop package2 ????? ? ??? ? ????? 750 500 450 ??? ? ? ? ??? mw ???? ???? t stg ?????????????? ?????????????? storage temperature ????? ????? 65 to + 150 ??? ??? c ???? ? ?? ? ???? t l ?????????????? ? ???????????? ? ?????????????? lead temperature, 1 mm from case for 10 seconds (plastic dip, soic, ssop or tssop package) ????? ? ??? ? ????? 260 ??? ? ? ? ??? c *maximum ratings are those values beyond which damage to the device may occur. functional operation should be restricted to the recommended operating conditions. 2derating e plastic dip: 10 mw/ c from 65 to 125 c soic package: 7 mw/ c from 65 to 125 c tssop package: 6.1 mw/ c from 65 to 125 c for high frequency or heavy load considerations, see chapter 2 of the on semiconductor highspeed cmos data book (dl129/d). recommended operating conditions ???? ???? symbol ??????????????? ??????????????? parameter ??? ??? min ?? ?? max ??? ??? unit ???? ???? v cc ??????????????? ??????????????? dc supply voltage (referenced to gnd) ??? ??? 4.5 ?? ?? 5.5 ??? ??? v ???? ???? v in , v out ??????????????? ??????????????? dc input voltage, output voltage (referenced to gnd) ??? ??? 0 ?? ?? v cc ??? ??? v ???? ???? t a ??????????????? ??????????????? operating temperature, all package types ??? ??? 55 ?? ?? + 125 ??? ??? c ???? ???? t r , t f ??????????????? ??????????????? input rise and fall time (figure 1) ??? ??? 0 ?? ?? 500 ??? ??? ns dc electrical characteristics (voltages referenced to gnd) ???? ???? ????????? ????????? ????????? ????????? ???? ???? ????????? ????????? guaranteed limit ??? ??? ???? ???? symbol ????????? ????????? parameter ????????? ????????? test conditions ???? ???? v cc v ???? ???? 55 to 25 c ??? ??? 85 c ???? ???? 125 c ??? ??? unit ???? ? ?? ? ???? v ih ????????? ? ??????? ? ????????? minimum highlevel input voltage ????????? ? ??????? ? ????????? v out = 0.1 v or v cc 0.1 v |i out | 20 m a ???? ? ?? ? ???? 4.5 5.5 ???? ? ?? ? ???? 2.0 2.0 ??? ? ? ? ??? 2.0 2.0 ???? ? ?? ? ???? 2.0 2.0 ??? ? ? ? ??? v ???? ???? v il ????????? ????????? maximum lowlevel input voltage ????????? ????????? v out = 0.1 v or v cc 0.1 v |i out | 20 m a ???? ???? 4.5 5.5 ???? ???? 0.8 0.8 ??? ??? 0.8 0.8 ???? ???? 0.8 0.8 ??? ??? v ???? ? ?? ? ???? v oh ????????? ? ??????? ? ????????? minimum highlevel output voltage ????????? ? ??????? ? ????????? v in = v ih or v il |i out | 20 m a ???? ? ?? ? ???? 4.5 5.5 ???? ? ?? ? ???? 4.4 5.4 ??? ? ? ? ??? 4.4 5.4 ???? ? ?? ? ???? 4.4 5.4 ??? ? ? ? ??? v ???? ???? ????????? ????????? ????????? ????????? v in = v ih or v il |i out | 6.0 ma ???? ???? 4.5 ???? ???? 3.98 ??? ??? 3.84 ???? ???? 3.7 ??? ??? ???? ? ?? ? ???? v ol ????????? ? ??????? ? ????????? maximum lowlevel output voltage ????????? ? ??????? ? ????????? v in = v ih or v il |i out | 20 m a ???? ? ?? ? ???? 4.5 5.5 ???? ? ?? ? ???? 0.1 0.1 ??? ? ? ? ??? 0.1 0.1 ???? ? ?? ? ???? 0.1 0.1 ??? ? ? ? ??? v ???? ???? ????????? ????????? ????????? ????????? v in = v ih or v il |i out | 6.0 ma ???? ???? 4.5 ???? ???? 0.26 ??? ??? 0.33 ???? ???? 0.4 ??? ??? ???? ???? i in ????????? ????????? maximum input leakage current ????????? ????????? v in = v cc or gnd, pins 1 or 19 ???? ???? 5.5 ???? ???? 0.1 ??? ??? 1.0 ???? ???? 1.0 ??? ??? m a ???? ? ?? ? ???? i cc ????????? ? ??????? ? ????????? maximum quiescent supply current (per package) ????????? ? ??????? ? ????????? v in = v cc or gnd i out = 0 m a ???? ? ?? ? ???? 5.5 ???? ? ?? ? ???? 4.0 ??? ? ? ? ??? 40 ???? ? ?? ? ???? 160 ??? ? ? ? ??? m a ???? ? ?? ? ???? i oz ????????? ? ??????? ? ????????? maximum threestate leakage current ????????? ? ??????? ? ????????? output in highimpedance state v in = v il or v ih v out = v cc or gnd, i/o pins ???? ? ?? ? ???? 5.5 ???? ? ?? ? ???? 0.5 ??? ? ? ? ??? 5.0 ???? ? ?? ? ???? 10 ??? ? ? ? ??? m a ???? ???? d i cc ????????? ????????? additional quiescent supply current ????????? ????????? v in = 2.4 v, any one input v in =v cc or gnd other in p uts ???? ???? ????? ????? 55 c ????? ????? 25 c to 125 c ??? ??? ???? ???? ????????? ????????? current ????????? ????????? v i n = v cc or gnd , other in uts l out = 0 m a ???? ???? 5.5 ????? ????? 2.9 ????? ????? 2.4 ??? ??? ma note: information on typical parametric values can be found in chapter 2 of the on semiconductor highspeed cmos data book (dl129/d). this device contains protection circuitry to guard against damage due to high static voltages or electric fields. however, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this highimpedance cir- cuit. for proper operation, v in and v out should be constrained to the range gnd (v in or v out ) v cc . unused inputs must always be tied to an appropriate logic voltage level (e.g., either gnd or v cc ). unused outputs must be left open.
mc74hct245a http://onsemi.com 3 ac electrical characteristics (v cc = 5.0 v 10%, c l = 50 pf, input t r = t f = 6.0 ns) ????? ????? ?????????????????? ?????????????????? ?????????? ?????????? guaranteed limit ??? ??? ????? ? ??? ? ????? symbol ?????????????????? ? ???????????????? ? ?????????????????? parameter ???? ? ?? ? ???? 55 to 25 c ???? ? ?? ? ???? 85 c ???? ? ?? ? ???? 125 c ??? ? ? ? ??? unit ????? ????? t plh , t phl ?????????????????? ?????????????????? maximum propagation delay, a to b or b to a (figures 1 and 3) ???? ???? 22 ???? ???? 28 ???? ???? 33 ??? ??? ns ????? ? ??? ? ????? t plz , t phz ?????????????????? ? ???????????????? ? ?????????????????? maximum propagation delay, direction or output enable to a or b (figures 2 and 4) ???? ? ?? ? ???? 30 ???? ? ?? ? ???? 36 ???? ? ?? ? ???? 42 ??? ? ? ? ??? ns ????? ? ??? ? ????? t pzl , t pzh ?????????????????? ? ???????????????? ? ?????????????????? maximum propagation delay, output enable to a or 8 (figures 2 and 4) ???? ? ?? ? ???? 30 ???? ? ?? ? ???? 36 ???? ? ?? ? ???? 42 ??? ? ? ? ??? ns ????? ????? t tlh , t thl ?????????????????? ?????????????????? maximum output transition time. any output (figures 1 and 3) ???? ???? 12 ???? ???? 15 ???? ???? 18 ??? ??? ns ????? ????? c in ?????????????????? ?????????????????? maximum input capacitance (pin 1 or 19) ???? ???? 10 ???? ???? 10 ???? ???? 10 ??? ??? pf ????? ? ??? ? ????? c out ?????????????????? ? ???????????????? ? ?????????????????? maximum threestate i/o capacitance, (i/o in highimpedance state) ???? ? ?? ? ???? 15 ???? ? ?? ? ???? 15 ???? ? ?? ? ???? 15 ??? ? ? ? ??? pf note: for propagation delays with loads other than 50 pf, and information on typical parametric values, see chapter 2 of the on semiconductor highspeed cmos data book (dl129/d). typical @ 25 c, v cc = 5.0 v c pd power dissipation capacitance (per enabled output)* 97 pf * used to determine the noload dynamic power consumption: p d = c pd v cc 2 f + i cc v cc . for load considerations, see chapter 2 of the on semiconductor highspeed cmos data book (dl129/d).
mc74hct245a http://onsemi.com 4 switching waveforms 3.0 v gnd t f t r input a or b output b or a 0.3 v 1.3 v 2.7 v 10% 1.3 v 90% t tlh t plh t phl t thl figure 1. output enable a or b a or b 1.3 v 1.3 v 1.3 v 90% 10% t pzl t plz t pzh t phz 3.0 v gnd high impedance v ol v oh high impedance 3.0 v gnd 1.3 v 1.3 v figure 2. *includes all probe and jig capacitance c l * test point device under test output figure 3. *includes all probe and jig capacitance c l * test point device under test output figure 4. test circuit connect to v cc when testing t plz and t pzl . connect to gnd when testing t phz and t pzh . 1 k w direction
mc74hct245a http://onsemi.com 5 expanded logic diagram a data port b data port output enable direction a1 a2 a3 a4 a5 a6 a7 a8 2 3 4 5 6 7 8 9 19 1 b1 b2 b3 b4 b5 b6 b7 b8 18 17 16 15 14 13 12 11
mc74hct245a http://onsemi.com 6 package dimensions so20 dw suffix case 751d05 issue f pdip20 n suffix plastic dip package case 73803 issue e notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension l to center of lead when formed parallel. 4. dimension b does not include mold flash. m l j 20 pl m b m 0.25 (0.010) t dim min max min max millimeters inches a 25.66 27.17 1.010 1.070 b 6.10 6.60 0.240 0.260 c 3.81 4.57 0.150 0.180 d 0.39 0.55 0.015 0.022 g 2.54 bsc 0.100 bsc j 0.21 0.38 0.008 0.015 k 2.80 3.55 0.110 0.140 l 7.62 bsc 0.300 bsc m 0 15 0 15 n 0.51 1.01 0.020 0.040 e 1.27 1.77 0.050 0.070 1 11 10 20 a seating plane k n f g d 20 pl t m a m 0.25 (0.010) t e b c f 1.27 bsc 0.050 bsc 20 1 11 10 b 20x h 10x c l 18x a1 a seating plane h x 45 e d m 0.25 m b m 0.25 s a s b t e t b a dim min max millimeters a 2.35 2.65 a1 0.10 0.25 b 0.35 0.49 c 0.23 0.32 d 12.65 12.95 e 7.40 7.60 e 1.27 bsc h 10.05 10.55 h 0.25 0.75 l 0.50 0.90 0 7 notes: 1. dimensions are in millimeters. 2. interpret dimensions and tolerances per asme y14.5m, 1994. 3. dimensions d and e do not include mold protrusion. 4. maximum mold protrusion 0.15 per side. 5. dimension b does not include dambar protrusion. allowable protrusion shall be 0.13 total in excess of b dimension at maximum material condition.
mc74hct245a http://onsemi.com 7 package dimensions tssop20 dt suffix case 948e02 issue a dim a min max min max inches 6.60 0.260 millimeters b 4.30 4.50 0.169 0.177 c 1.20 0.047 d 0.05 0.15 0.002 0.006 f 0.50 0.75 0.020 0.030 g 0.65 bsc 0.026 bsc h 0.27 0.37 0.011 0.015 j 0.09 0.20 0.004 0.008 j1 0.09 0.16 0.004 0.006 k 0.19 0.30 0.007 0.012 k1 0.19 0.25 0.007 0.010 l 6.40 bsc 0.252 bsc m 0 8 0 8 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a does not include mold flash, protrusions or gate burrs. mold flash or gate burrs shall not exceed 0.15 (0.006) per side. 4. dimension b does not include interlead flash or protrusion. interlead flash or protrusion shall not exceed 0.25 (0.010) per side. 5. dimension k does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the k dimension at maximum material condition. 6. terminal numbers are shown for reference only. 7. dimension a and b are to be determined at datum plane w. 110 11 20 pin 1 ident a b t 0.100 (0.004) c d g h section nn k k1 jj1 n n m f w seating plane v u s u m 0.10 (0.004) v s t 20x ref k l l/2 2x s u 0.15 (0.006) t detail e 0.25 (0.010) detail e 6.40 0.252 s u 0.15 (0.006) t
mc74hct245a http://onsemi.com 8 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent r ights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into t he body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. publication ordering information central/south america: spanish phone : 3033087143 (monfri 8:00am to 5:00pm mst) email : onlitspanish@hibbertco.com asia/pacific : ldc for on semiconductor asia support phone : 3036752121 (tuefri 9:00am to 1:00pm, hong kong time) toll free from hong kong & singapore: 00180044223781 email : onlitasia@hibbertco.com japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1418549 phone : 81357402745 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. mc74hct245a/d north america literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com fax response line: 3036752167 or 8003443810 toll free usa/canada n. american technical support : 8002829855 toll free usa/canada europe: ldc for on semiconductor european support german phone : (+1) 3033087140 (mf 1:00pm to 5:00pm munich time) email : onlitgerman@hibbertco.com french phone : (+1) 3033087141 (mf 1:00pm to 5:00pm toulouse time) email : onlitfrench@hibbertco.com english phone : (+1) 3033087142 (mf 12:00pm to 5:00pm uk time) email : onlit@hibbertco.com european tollfree access*: 0080044223781 *available from germany, france, italy, england, ireland
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