? semiconductor components industries, llc, 2011 may, 2011 ? rev. 12 1 publication order number: mc74hct244a/d mc74hct244a octal 3-state noninverting buffer/line driver/ line receiver with lsttl-compatible inputs high ? performance silicon ? gate cmos the mc74hct244a is identical in pinout to the ls244. this device may be used as a level converter for interfacing ttl or nmos outputs to high ? speed cmos inputs. the hct244a is an octal noninverting buffer line driver line receiver designed to be used with 3 ? state memory address drivers, clock drivers, and other bus ? oriented systems. the device has non ? inverted outputs and two active ? low output enables. the hct244a is the non ? inverting version of the hct240. see also hct241. features ? 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 a ? in compliance with the requirements defined by jedec standard no. 7 a ? chip complexity: 112 fets or 28 equivalent gates ? these devices are pb ? free and are rohs compliant figure 1. logic diagram data inputs a1 a2 a3 a4 b1 b2 b3 b4 17 15 13 11 8 6 4 218 16 14 12 9 7 5 3 yb4 yb3 yb2 yb1 ya4 ya3 ya2 ya1 noninverting outputs pin 20 = v cc pin 10 = gnd output enables enable a enable b 1 19 pin assignment a3 a2 yb4 a1 enable a gnd yb1 a4 yb2 yb3 5 4 3 2 1 10 9 8 7 6 14 15 16 17 18 19 20 11 12 13 ya2 b4 ya1 enable b v cc b1 ya4 b2 ya3 b3 http://onsemi.com soic ? 20w dw suffix case 751d tssop ? 20 dt suffix case 948e soeiaj ? 20 m suffix case 967 1 1 1 pdip ? 20 n suffix case 738 1 see detailed ordering, shipping, and marking information in the package dimensions section on page 5 of this data sheet. ordering and marking information function table inputs outputs enable a, enable b a, b ya, yb lll lhh hxz z = high impedance, x = don?t care
mc74hct244a http://onsemi.com 2 ???????????????????????? ???????????????????????? ???? ???? ?????????????? ?????????????? ?????? ?????? ??? ??? ???? ???? v cc ?????????????? ?????????????? ?????? ?????? ??? ??? ???? ???? ?????????????? ?????????????? ?????? ?????? ??? ??? ???? ???? ?????????????? ?????????????? ?????? ?????? ??? ??? ???? ???? ?????????????? ?????????????? ?????? ?????? 20 ??? ??? ???? ???? ?????????????? ?????????????? ?????? ?????? 35 ??? ??? ???? ???? ?????????????? ?????????????? ?????? ?????? 75 ??? ??? ???? ???? ???? ?????????????? ?????????????? ?????????????? ?????? ?????? ?????? ??? ??? ??? ???? ???? ?????????????? ?????????????? ?????? ?????? ??? ??? c ???? ???? ???? ?????????????? ?????????????? ?????????????? ?????? ?????? ?????? ??? ??? ??? c ?derating ? 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 recommended operating conditions ???? ???? ?????????????? ?????????????? ??? ??? ??? ??? ??? ??? ???? ???? v cc ?????????????? ?????????????? ??? ??? ??? ??? ??? ??? ???? ???? ?????????????? ?????????????? ??? ??? ??? ??? ??? ??? ???? ???? ?????????????? ?????????????? ??? ??? ??? ??? ??? ??? c ???? ???? ?????????????? ?????????????? ??? ??? ??? ??? ??? ??? dc electrical characteristics (voltages referenced to gnd) ???? ???? ???? ???? symbol ?????????? ?????????? ?????????? ?????????? ????????? ????????? ????????? ????????? ??? ??? ??? ??? ?????????? ?????????? ?? ?? ?? ?? ???? ???? ???? c ???? ???? ???? 85 c ???? ???? ???? 125 c ???? ???? ???? v ih ?????????? ?????????? ?????????? ? level input voltage ????????? ????????? ????????? 20 a ??? ??? ??? ???? ???? ???? ???? ???? ???? ???? ???? ???? ?? ?? ?? ???? ???? ?????????? ?????????? ? level input voltage ????????? ????????? 20 a ??? ??? ???? ???? ???? ???? ???? ???? ?? ?? ???? ???? ???? ???? ???? ?????????? ?????????? ?????????? ?????????? ?????????? ? level output voltage ????????? ????????? ????????? 20 a ??? ??? ??? ???? ???? ???? ???? ???? ???? ???? ???? ???? ?? ?? ?? ?? ?? ????????? ????????? ????????? 6 ma ??? ??? ??? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ?????????? ?????????? ?????????? ?????????? ? level output voltage ????????? ????????? 20 a ??? ??? ???? ???? ???? ???? ???? ???? ?? ?? ?? ?? ????????? ????????? ????????? 6 ma ??? ??? ??? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ???? ?????????? ?????????? ????????? ????????? ??? ??? ???? ???? 0.1 ???? ???? 1.0 ???? ???? 1.0 ?? ?? a ???? ???? ?????????? ?????????? ? state leakage current ????????? ????????? ? impedance state v in = v il or v ih; v out = v cc or gnd ??? ??? ???? ???? 0.5 ???? ???? 5.0 ???? ???? 10 ?? ?? a ???? ???? ???? ?????????? ?????????? ?????????? ????????? ????????? ????????? a ??? ??? ??? ???? ???? ???? ???? ???? ???? ???? ???? ???? ?? ?? ?? a ???? ???? ???? i cc ?????????? ?????????? ?????????? ????????? ????????? ????????? a ??? ??? ??? ???? ???? ? 55 c ??????? ??????? c to 125 c ?? ?? ?? ma ???? ???? ??????? ??????? i cc . 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 high ? impedance 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.
mc74hct244a http://onsemi.com 3 ac electrical characteristics (v cc = 5.0 v 10%, c l = 50 pf, input t r = t f = 6 ns) ???? ???? ???? symbol ?????????????????? ?????????????????? ?????????????????? ???????????? ???????????? ?? ?? ?? ????? ????? c ???? ???? 85 c ????? ????? 125 c ???? ???? t plh , t phl ?????????????????? ?????????????????? ????? ????? ???? ???? ????? ????? ?? ?? ???? ???? ???? ?????????????????? ?????????????????? ?????????????????? ????? ????? ????? ???? ???? ???? ????? ????? ????? ?? ?? ?? ???? ???? ???? ?????????????????? ?????????????????? ?????????????????? ????? ????? ????? ???? ???? ???? ????? ????? ????? ?? ?? ?? ???? ???? ?????????????????? ?????????????????? ????? ????? ???? ???? ????? ????? ?? ?? ???? ???? ?????????????????? ?????????????????? ????? ????? ???? ???? ????? ????? ?? ?? ???? ???? ???? ?????????????????? ?????????????????? ?????????????????? ? state output capacitance (output in high ? impedance state) ????? ????? ????? ???? ???? ???? ????? ????? ????? ?? ?? ?? typical @ 25 c, v cc = 5.0 v pf 55 * used to determine the no ? load dynamic power consumption: p d = c pd v cc 2 f + i cc v cc . switching waveforms figure 2. figure 3. 3 v gnd t f t r input a or b output ya or yb 0.3 v 1.3 v 2.7 v 10% 1.3 v 90% t tlh t plh t phl t thl enable a or b output y output y 1.3 v 1.3 v 1.3 v 90% 10% t pzl t plz t pzh t phz 3 v gnd high impedance v ol v oh high impedance
mc74hct244a http://onsemi.com 4 test circuits *includes all probe and jig capacitance c l * test point device under test output figure 4. *includes all probe and jig capacitance c l * test point device under test output figure 5. connect to v cc when testing t plz and t pzl . connect to gnd when testing t phz and t pzh . 1 k logic detail data input a or b enable a or enable b to three other a or b inverters one of 8 buffers ya or yb v cc
mc74hct244a http://onsemi.com 5 ordering information device package shipping ? mc74hct244ang pdip ? 20 (pb ? free) 18 units / rail mc74hct244adwg soic ? 20 (pb ? free) 38 units / rail mc74hct244adwr2g soic ? 20 (pb ? free) 1000 / tape & reel MC74HCT244ADTR2G tssop ? 20* 2500 / tape & reel mc74hct244afg soeiaj ? 20 (pb ? free) 40 units / rail mc74hct244afelg soeiaj ? 20 (pb ? free) 2000 / tape & reel ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. *these packages are inherently pb ? free. marking diagrams pdip ? 20 soic ? 20w tssop ? 20 soeiaj ? 20 20 1 74hct244a awlywwg a = assembly location wl, l = wafer lot yy, y = year ww, w = work week g or = pb ? free package (note: microdot may be in either location) 1 20 hct 244a alyw 20 1 hct244a awlyywwg 1 20 mc74hct244an awlyywwg
mc74hct244a http://onsemi.com 6 package dimensions pdip ? 20 n suffix plastic dip package case 738 ? 03 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 soic ? 20w dw suffix case 751d ? 05 issue g 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.
mc74hct244a http://onsemi.com 7 package dimensions tssop ? 20 dt suffix case 948e ? 02 issue c 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 n ? n 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 7.06 16x 0.36 16x 1.26 0.65 dimensions: millimeters 1 pitch soldering footprint
mc74hct244a http://onsemi.com 8 package dimensions soeiaj ? 20 f suffix case 967 ? 01 issue a dim min max min max inches --- 2.05 --- 0.081 millimeters 0.05 0.20 0.002 0.008 0.35 0.50 0.014 0.020 0.15 0.25 0.006 0.010 12.35 12.80 0.486 0.504 5.10 5.45 0.201 0.215 1.27 bsc 0.050 bsc 7.40 8.20 0.291 0.323 0.50 0.85 0.020 0.033 1.10 1.50 0.043 0.059 0 0.70 0.90 0.028 0.035 --- 0.81 --- 0.032 a 1 h e q 1 l e 10 0 10 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimensions d and e do not include mold flash or protrusions and are measured at the parting line. mold flash or protrusions shall not exceed 0.15 (0.006) per side. 4. terminal numbers are shown for reference only. 5. the lead width dimension (b) does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the lead width dimension at maximum material condition. dambar cannot be located on the lower radius or the foot. minimum space between protrusions and adjacent lead to be 0.46 ( 0.018). h e a 1 l e q 1 c a z d e 20 110 11 b m 0.13 (0.005) e 0.10 (0.004) view p detail p m l a b c d e e l m z on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y 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 wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the 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 of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly 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. this literature is subject to all applicable copyright laws and is not for resale in any manner. mc74hct244a/d publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative
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