? semiconductor components industries, llc, 2014 may, 2014 ? rev. 9 1 publication order number: mc74vhct244a/d mc74vhct244a octal bus buffer/line driver with 3-state outputs the mc74vhct244a is an advanced high speed cmos octal bus buffer fabricated with silicon gate cmos technology. it achieves high speed operation similar to equivalent bipolar schottky ttl while maintaining cmos low power dissipation. the mc74vhct244a is a noninverting 3?state buffer, and has two active?low output enables. this device is designed to be used with 3?state memory address drivers, etc. the vhct inputs are compatible with ttl levels. this device can be used as a level converter for interfacing 3.3 v to 5.0 v, because it has full 5.0 v cmos level output swings. the vhct244a input and output (when disabled) structures provide protection when voltages between 0 v and 5.5 v are applied, regardless of the supply voltage. these input and output structures help prevent device destruction caused by supply voltage?input/ output voltage mismatch, battery backup, hot insertion, etc. features ? high speed: t pd = 5.6 ns (typ) at v cc = 5.0 v ? low power dissipation: i cc = 4.0 a (max) at t a = 25 c ? ttl?compatible inputs: v il = 0.8 v; v ih = 2.0 v ? power down protection provided on inputs and outputs ? balanced propagation delays ? designed for 4.5 v to 5.5 v operating range ? low noise: v olp = 1.1 v (max) ? pin and function compatible with other standard logic families ? latchup performance exceeds 300 ma ? esd performance: human body model > 2000 v; machine model > 200 v ? chip complexity: 112 fets or 28 equivalent gates ? nlv prefix for automotive and other applications requiring unique site and control change requirements; aec?q100 qualified and ppap capable ? these devices are pb?free and are rohs compliant http://onsemi.com see detailed ordering and shipping information in the package dimensions section on page 4 of this data sheet. ordering information marking diagrams 20 1 tssop?20 suffix dt case 948e soic?20wb suffix dw case 751d vhct 244a alyw 1 1 20 1 vhct244a awlyywwg 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)
mc74vhct244a http://onsemi.com 2 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 output enables oea oeb 1 19 figure 2. pin assignment a3 a2 yb4 a1 oea 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 oeb v cc b1 ya4 b2 ya3 b3 function table inputs outputs oea , oeb a, b ya, yb l l h l l h h x z l l h h z z
mc74vhct244a http://onsemi.com 3 ??????????????????????? ??????????????????????? ???? ???? ?????????????? ?????????????? ?????? ?????? ?? ?? ???? ???? v cc ?????????????? ?????????????? ?????? ?????? ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? 20 ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? 25 ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? 75 ?? ?? ???? ???? ???? ?????????????? ?????????????? ?????????????? ?????? ?????? ?????? ?? ?? ?? ???? ???? ?????????????? ?????????????? ?????? ?????? ?? ?? c maximum ratings are those values beyond which device damage can occur. maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. if these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. ?derating ? soic packages: ? 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 ???? ???? ???????????????????????? ???????????????????????? 0.5 v ??? ??? ???? ???? ?? ?? ????????????????????????????????? ????????????????????????????????? dc electrical characteristics ???? ???? ???? ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ?????? ?????? c ?????? ?????? c ?????? ?????? c ?? ?? ?? ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ???? ???? ???? v ih ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ???? ???? ???? ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ???? ???? ???? ??????? ??????? ??????? ?????? ?????? a ??? ??? ??? ??? ?? ?? ??? ??? ???? ???? ??? ??? ??? ??? ???? ???? ?? ?? ?????? ?????? ??? ??? ??? ??? ?? ?? ??? ??? ???? ???? ??? ??? ??? ??? ???? ???? ?? ?? ???? ???? ???? ??????? ??????? ??????? ?????? ?????? a ??? ??? ??? ??? ?? ?? ??? ??? ???? ???? ??? ??? ??? ??? ???? ???? ?? ?? ?????? ?????? ??? ??? ??? ??? ?? ?? ??? ??? ???? ???? ??? ??? ??? ??? ???? ???? ?? ?? ???? ???? ???? ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? 0.1 ???? ???? ???? ??? ??? ??? 1.0 ??? ??? ??? ???? ???? ???? 1.0 ?? ?? ?? a ???? ???? ??????? ??????? ?????? ?????? ??? ??? ??? ??? ?? ?? ??? ??? 0.25 ???? ???? ??? ??? 2.5 ??? ??? ???? ???? ?? ?? a ???? ???? ???? ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? a ???? ???? ???? ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ???? ???? ???? ??????? ??????? ??????? ?????? ?????? ?????? ??? ??? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? a 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.
mc74vhct244a http://onsemi.com 4 ????????????????????????????????? ????????????????????????????????? (input t r = t f = 3.0 ns) ???? ???? ???? symbo l ??????? ??????? ??????? ???????? ???????? ???????? ?????? ?????? c ?????? ?????? c ?????? ?????? c ?? ?? ?? ??? ??? ?? ?? ??? ??? ???? ???? ??? ??? ??? ??? ???? ???? ???? ???? ???? t plh , t phl ??????? ??????? ??????? ???????? ???????? ???????? 0.5 v c l = 15 pf c l = 50 pf ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ???? ???? ???? ??????? ??????? ??????? ???????? ???????? ???????? 0.5 v c l = 15 pf r l = 1 k c l = 50 pf ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ???? ???? ???? ??????? ??????? ??????? ???????? ???????? ???????? 0.5 v c l = 50 pf r l = 1 k ??? ??? ??? ?? ?? ?? 8.8 ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ???? ???? ???? ??????? ??????? ??????? ???????? ???????? ???????? 0.5 v c l = 50 pf (note 1) ??? ??? ??? ?? ?? ?? ??? ??? ??? ???? ???? ???? ??? ??? ??? ??? ??? ??? ???? ???? ???? ?? ?? ?? ac electrical characteristics (input t r = t f = 3.0 ns) symbo l parameter typical @ 25 c, v cc = 5.0 v uni t min typ max c pd power dissipation capacitance (note 2) 18 pf ???? ???? ????????????????????? ????????????????????? ???? ???? ??? ??? ???? ???? ?? ?? ???? ???? ????????????????????? ????????????????????? ???? ???? ??? ??? ???? ???? ?? ?? v cc f in + i cc / 8 (per bit). c pd is used to determine the no?load dynamic power consumption; p d = c pd v cc 2 f in + i cc v cc . noise characteristics (input t r = t f = 3.0 ns, c l = 50 pf, v cc = 5.0 v) symbo l parameter t a = 25 c uni t typ max v olp quiet output maximum dynamic v ol 0.9 1.1 v v olv quiet output minimum dynamic v ol ?0.9 ?1.1 v v ihd minimum high level dynamic input voltage 2.0 v v ild maximum low level dynamic input voltage 0.8 v ordering information device package shipping ? mc74vhct244adwrg soic?20wb (pb?free) 1000 / tape & reel mc74vhct244adtg tssop?20 (pb?free) 75 units / rail mc74vhct244adtrg 2500 / tape & reel NLV74VHCT244ADTRG* 2500 / 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. *nlv prefix for automotive and other applications requiring unique site and control change requirements; aec?q100 qualified and ppap capable.
mc74vhct244a http://onsemi.com 5 figure 3. switching waveform figure 4. switching waveform oea or oeb ya or yb ya or yb 1.5 v t pzl t plz t pzh t phz 3 v high impedance v ol +0.3 v v oh -0.3 v high impedance gnd t phl ya or yb a or b t plh 1.5 v 1.5 v 3 v v ol v oh 1.5 v 1.5 v gnd *includes all probe and jig capacitance c l * test point device under test output figure 5. test circuit *includes all probe and jig capacitance c l * test point device under test output figure 6. 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
mc74vhct244a http://onsemi.com 6 package dimensions tssop?20 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
mc74vhct244a http://onsemi.com 7 package dimensions 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. soic?20 wb dw suffix case 751d?05 issue g on semiconductor and are registered trademarks of semiconductor co mponents industries, llc (scillc). scillc owns the rights to a numb er of patents, trademarks, copyrights, trade secrets, and other inte llectual property. a listing of scillc?s pr oduct/patent coverage may be accessed at ww w.onsemi.com/site/pdf/patent?marking.pdf. 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 s pecifically disclaims any and all liability, including without 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 applications and actual performance may vary over time. all operating parameters, including ?typical s? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the right s of others. scillc products are not designed, intended, or a uthorized 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 whic h the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or us e scillc products for any such unintended or unauthorized appli cation, 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 unin tended or unauthorized use, even if such claim alleges that scil lc 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 copyrig ht laws and is not for resale in any manner. p ublication 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?5817?1050 mc74vhct244a/d 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 loc al sales representative
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