? semiconductor components industries, llc, 2005 january, 2005 ? rev. 5 1 publication order number: mc74lcx244/d mc74lcx244 low-voltage cmos octal buffer with 5 v?tolerant inputs and outputs (3?state, non?inverting) the mc74lcx244 is a high performance, non?inverting octal buffer operating from a 2.3 to 3.6 v supply. high impedance ttl compatible inputs significantly reduce current loading to input drivers while ttl compatible outputs offer improved switching noise performance. a v i specification of 5.5 v allows mc74lcx244 inputs to be safely driven from 5 v devices. the mc74lcx244 is suitable for memory address driving and all ttl level bus oriented transceiver applications. current drive capability is 24 ma at the outputs. the output enable (oe ) input, when high, disables the output by placing them in a high z condition. features ? designed for 2.3 to 3.6 v v cc operation ? 5 v tolerant ? interface capability with 5 v ttl logic ? supports live insertion and withdrawal ? i off specification guarantees high impedance when v cc = 0 v ? lvttl compatible ? lvcmos compatible ? 24 ma balanced output sink and source capability ? near zero static supply current in all three logic states (10 a) substantially reduces system power requirements ? latchup performance exceeds 500 ma ? esd performance: human body model >2000 v machine model >200 v ? pb?free packages are available* *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. 20 1 1 20 marking diagrams a = assembly location l, wl = wafer lot y, yy = year w, ww = work week soic?20 dw suffix case 751d lcx244 awlyyww lcx 244 alyw tssop?20 dt suffix case 948e soeiaj?20 m suffix case 967 74lcx244 awlyww 1 1 1 20 1 20 20 20 see detailed ordering and shipping information in the package dimensions section on page 3 of this data sheet. ordering information http://onsemi.com
mc74lcx244 http://onsemi.com 2 figure 1. pinout: 20?lead (top view) pin names function output enable inputs data inputs 3?state outputs pins noe 1dn, 2dn 1on, 2on truth table outputs inputs l l h 1oe 2oe 1dn 2dn l h x l h z h = high voltage level l = low voltage level z = high impedance state x = high or low voltage level and transitions are acceptable for i cc reasons, do not float inputs figure 2. logic diagram 19 20 18 17 16 15 14 2 1 34567 v cc 13 8 12 9 11 10 2oe 1o0 2d0 1o1 2d1 1o2 2d2 1o3 2d3 1oe 1d0 2o0 1d1 2o1 1d2 2o2 1d3 2o3 gnd 1oe 1 1d0 2 1o0 18 1d1 4 1o1 16 1d2 6 1o2 14 1d3 8 1o3 12 2oe 19 2d0 17 2o0 3 2d1 15 2o1 5 2d2 13 2o2 7 2d3 11 2o3 9 1on, 2on
mc74lcx244 http://onsemi.com 3 maximum ratings symbol parameter value condition unit v cc dc supply voltage ?0.5 to +7.0 v v i dc input voltage ?0.5 v i +7.0 v v o dc output voltage ?0.5 v o +7.0 output in 3?state v ?0.5 v o v cc + 0.5 output in high or low state (note 1) v i ik dc input diode current ?50 v i < gnd ma i ok dc output diode current ?50 v o < gnd ma +50 v o > v cc ma i o dc output source/sink current 50 ma i cc dc supply current per supply pin 100 ma i gnd dc ground current per ground pin 100 ma t stg storage temperature range ?65 to +150 c maximum ratings are those values beyond which device damage can occur. maximum ratings applied to the device are individual str ess limit values (not normal operating conditions) and are not valid simultaneously. if these limits are exceeded, device functional operation i s not implied, damage may occur and reliability may be affected. 1. i o absolute maximum rating must be observed. recommended operating conditions symbol parameter min typ max unit v cc supply voltage operating data retention only 2.0 1.5 2.5, 3.3 2.5, 3.3 3.6 3.6 v v i input voltage 0 5.5 v v o output voltage (high or low state) (3?state) 0 0 v cc 5.5 v i oh high level output current v cc = 3.0 v ? 3.6 v v cc = 2.7 v ? 3.0 v ?24 ?12 ma i ol low level output current v cc = 3.0 v ? 3.6 v v cc = 2.7 v ? 3.0 v 24 12 ma t a operating free?air temperature ?40 +85 c t/ v input transition rise or fall rate, v in from 0.8 v to 2.0 v, v cc = 3.0 v 0 10 ns/v ordering information device package shipping 2 mc74lcx244dw soic?20 38 units / rail MC74LCX244DWR2 soic?20 1000 tape & reel mc74lcx244dr2g soic?20 (pb?free) 1000 tape & reel mc74lcx244dt tssop?20* 75 units / rail mc74lcx244dtr2 tssop?20* 2000 tape & reel mc74lcx244mel soeiaj?20 2000 tape & reel 2for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. *this package is inherently pb?free.
mc74lcx244 http://onsemi.com 4 dc electrical characteristics t a = ?40 c to +85 c symbol characteristic condition min max unit v ih high level input voltage (note 2) 2.3 v v cc 2.7 v 1.7 v 2.7 v v cc 3.6 v 2.0 v il low level input voltage (note 2) 2.3 v v cc 2.7 v 0.7 v 2.7 v v cc 3.6 v 0.8 v oh high level output voltage 2.3 v v cc 3.6 v; i ol = 100 a v cc ? 0.2 v v cc = 2.3 v; i oh = ?8 ma 1.8 v cc = 2.7 v; i oh = ?12 ma 2.2 v cc = 3.0 v; i oh = ?18 ma 2.4 v cc = 3.0 v; i oh = ?24 ma 2.2 v ol low level output voltage 2.3 v v cc 3.6 v; i ol = 100 a 0.2 v v cc = 2.3 v; i ol = 8 ma 0.6 v cc = 2.7 v; i ol = 12 ma 0.4 v cc = 3.0 v; i ol = 16 ma 0.4 v cc = 3.0 v; i ol = 24 ma 0.55 i i input leakage current 2.3 v v cc 3.6 v; 0 v v i 5.5 v 5 a i oz 3?state output current 2.3 v cc 3.6 v; 0 v v o 5.5 v; v i = v ih or v il 5 a i off power?off leakage current v cc = 0 v; v i or v o = 5.5 v 10 a i cc quiescent supply current 2.3 v cc 3.6 v; v i = gnd or v cc 10 a 2.3 v cc 3.6 v; 3.6 v i or v o 5.5 v 10 i cc increase in i cc per input 2.3 v cc 3.6 v; v ih = v cc ? 0.6 v 500 a 2. these values of v i are used to test dc electrical characteristics only. ac characteristics (t r = t f = 2.5 ns; r l = 500 ) limits t a = ?40 c to +85 c v cc = 3.0 v to 3.6 v v cc = 2.7 v v cc = 2.5 v 0.2 c l = 50 pf c l = 50 pf c l = 30 pf symbol parameter waveform min max min max min max unit t plh t phl propagation delay input to output 1 1.5 1.5 6.5 6.5 1.5 1.5 7.5 7.5 1.5 1.5 7.8 7.8 ns t pzh t pzl output enable time to high and low level 2 1.5 1.5 8.0 8.0 1.5 1.5 9.0 9.0 1.5 1.5 10 10 ns t phz t plz output disable time from high and low level 2 1.5 1.5 7.0 7.0 1.5 1.5 8.0 8.0 1.5 1.5 8.4 8.4 ns t oshl t oslh output?to?output skew (note 3) 1.0 1.0 ns 3. skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same d evice. the specification applies to any outputs switching in the same direction, either high?to?low (t oshl ) or low?to?high (t oslh ); parameter guaranteed by design.
mc74lcx244 http://onsemi.com 5 dynamic switching characteristics t a = +25 c symbol characteristic condition min typ max unit v olp dynamic low peak voltage (note 4) v cc = 3.3 v, c l = 50 pf, v ih = 3.3 v, v il = 0 v v cc = 2.5 v, c l = 30 pf, v ih = 2.5 v, v il = 0 v 0.8 0.6 v v olv dynamic low valley voltage (note 4) v cc = 3.3 v, c l = 50 pf, v ih = 3.3 v, v il = 0 v v cc = 2.5 v, c l = 30 pf, v ih = 2.5 v, v il = 0 v ?0.8 ?0.6 v 4. number of outputs defined as ano. measured with an?1o outputs switching from high?to?low or low?to?high. the remaining output is measured in the low state. capacitive characteristics symbol parameter condition typical unit c in input capacitance v cc = 3.3 v, v i = 0 v or v cc 7 pf c out output capacitance v cc = 3.3 v, v i = 0 v or v cc 8 pf c pd power dissipation capacitance 10 mhz, v cc = 3.3 v, v i = 0 v or v cc 25 pf v cc 0 v v oh v ol 1dn, 2dn 1on, 2on t phl t plh v cc 0 v 0 v 1oe , 2oe 1on, 2on t pzh 3.0 v t phz t pzl t plz 1on, 2on vmo vmo vmi vmi vmo vmo figure 3. ac waveforms vmi v cc v oh - 0.3 v v ol + 0.3 v gnd waveform 1 ? propagation delays t r = t f = 2.5 ns, 10% to 90%; f = 1 mhz; t w = 500 ns waveform 2 ? output enable and disable times t r = t f = 2.5 ns, 10% to 90%; f = 1 mhz; t w = 500 ns symbol v cc 3.3 v 0.3 v 2.7 v 2.5 v 0.2 v vmi 1.5 v 1.5 v v cc /2 vmo 1.5 v 1.5 v v cc /2 v hz v ol + 0.3 v v ol + 0.3 v v ol + 0.15 v v lz v oh ? 0.3 v v oh ? 0.3 v v oh ? 015 v vmi
mc74lcx244 http://onsemi.com 6 open pulse generator r t dut v cc r l r 1 c l 6 v gnd test switch t plh , t phl open t pzl , t plz 6 v at v cc = 3.3 0.3 v 6 v at v cc = 2.5 0.2 v open collector/drain t plh and t phl 6 v t pzh , t phz gnd c l = 50 pf at v cc = 3.3 0.3 v or equivalent (includes jig and probe capacitance) c l = 30 pf at v cc = 2.5 0.2 v or equivalent (includes jig and probe capacitance) r l = r 1 = 500 or equivalent r t = z out of pulse generator (typically 50 ) figure 4. test circuit
mc74lcx244 http://onsemi.com 7 package dimensions soic?20 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. tssop?20 dt suffix case 948e?02 issue b 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
mc74lcx244 http://onsemi.com 8 package dimensions soeiaj?20 m suffix case 967?01 issue o 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 0.18 0.27 0.007 0.011 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. atypicalo 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 atypicalso 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 officers, 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. publication ordering information n. american technical support : 800?282?9855 toll free usa/canada japan : on semiconductor, japan customer focus center 2?9?1 kamimeguro, meguro?ku, tokyo, japan 153?0051 phone : 81?3?5773?3850 mc74lcx244/d literature fulfillment : literature distribution center for on semiconductor p.o. box 61312, phoenix, arizona 85082?1312 usa phone : 480?829?7710 or 800?344?3860 toll free usa/canada fax : 480?829?7709 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : http://onsemi.com order literature : http://www.onsemi.com/litorder for additional information, please contact your local sales representative.
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