? semiconductor components industries, llc, 2014 september, 2014 ? rev. 14 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 ? 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 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 see detailed ordering and shipping information on page 5 o f this data sheet. ordering information function table inputs outputs enable a, enable b a, b ya, yb lll lhh hxz z = high impedance, x = don?t care marking diagrams soic?20w tssop?20 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
mc74hct244a http://onsemi.com 2 maximum ratings symbol parameter value unit v cc dc supply voltage (referenced to gnd) ?0.5 to +7 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, soic package? tssop package? 500 450 mw t stg storage temperature ?65 to +150 c t l lead temperature, 1 mm from case for 10 seconds (soic or tssop package) 260 c stresses exceeding those listed in the maximum ratings table may damage the device. if any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. ?derating: soic package: ?7 mw/ c from 65 to 125 c tssop package: ?6.1 mw/ c from 65 to 125 c 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 2) 0 500 ns functional operation above the stresses listed in the recommended operating ranges is not implied. extended exposure to stresse s beyond the recommended operating ranges limits may affect device reliability. dc electrical characteristics (voltages referenced to gnd) symbo l parameter test conditions v cc v guaranteed limit unit ?55 to 25 c 85 c 125 c v ih minimum high?level input voltage v out = 0.1 v or v cc ? 0.1 v |i out | 20 a 4.5 5.5 2 2 2 2 2 2 v v il maximum low?level input voltage v out = 0.1 v or v cc ? 0.1 v |i out | 20 a 4.5 5.5 0.8 0.8 0.8 0.8 0.8 0.8 v v oh minimum high?level output voltage v in = v ih or v il |i out | 20 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 ma 4.5 3.98 3.84 3.7 v ol maximum low?level output voltage v in = v ih or v il |i out | 20 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 ma 4.5 0.26 0.33 0.4 i in maximum input leakage current v in = v cc or gnd 5.5 0.1 1.0 1.0 a i oz maximum three?state leakage current output in high?impedance state v in = v il or v ih; v out = v cc or gnd 5.5 0.5 5.0 10 a i cc maximum quiescent supply current (per package) v in = v cc or gnd i out = 0 a 5.5 4 40 160 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) symbo l parameter guaranteed limit unit ?55 to 25 c 85 c 125 c t plh , t phl maximum propagation delay, a to ya or b to yb (figures 2 and 4) 20 25 30 ns t plz , t phz maximum propagation delay, output enable to ya or yb (figures 3 and 5) 26 33 39 ns t pzl , t pzh maximum propagation delay, output enable to ya or yb (figures 3 and 5) 22 28 33 ns t tlh , t thl maximum output transition time, any output (figures 2 and 4) 12 15 18 ns c in maximum input capacitance 10 10 10 pf c out maximum three?state output capacitance (output in high?impedance state) 15 15 15 pf c pd power dissipation capacitance (per enabled output)* 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 ? mc74hct244adwg soic?20 (pb?free) 38 units / rail mc74hct244adwr2g soic?20 (pb?free) 1000 / tape & reel MC74HCT244ADTR2G tssop?20 (pb?free) 2500 / tape & reel nlvhct244adtr2g* tssop?20 (pb?free) 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.
mc74hct244a http://onsemi.com 6 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* *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d.
mc74hct244a http://onsemi.com 7 package dimensions 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. on semiconductor and the are registered trademarks of semiconductor components industries, llc (scillc) or its subsidia ries in the united states and/or other countries. scillc owns the rights to a number of pa tents, trademarks, copyrights, trade secret s, and other intellectual property. a listin g of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent?marking.pdf. scillc reserves the right to make changes without further notice to any product s herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any part icular purpose, nor does sci llc 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. ?typi cal? 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 param eters, 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 right s of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgic al implant into the body, or other applications intended to s upport or sustain life, or for any other application in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer s hall indemnify and hold scillc and its officers , employees, subsidiaries, affiliates, and dist ributors 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 manufac ture 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. 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 mc74hct244a/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
|
