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74lvt244b 3.3v octal buffer/line driver (3-state) propduct specification ic23 data handbook 1998 nov integrated circuits
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 2 1998 nov 12 853-2133 20358 features ? octal bus interface ? 3-state buffers ? speed upgrade of 74lvth244a ? output capability: +64ma/-32ma ? ttl input and output switching levels ? input and output interface capability to systems at 5v supply ? bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs ? power-up 3-state ? live insertion/extraction permitted ? no bus current loading when output is tied to 5v bus ? latch-up protection exceeds 500ma per jedec std 17 ? esd protection exceeds 2000v per mil std 883 method 3015 and 200v per machine model description the lvt244b is a high-performance bicmos product designed for v cc operation at 3.3v. this device is an octal buffer that is ideal for driving bus lines. the device features two output enables (oe 1, oe 2), each controlling four of the 3-state outputs. quick reference data symbol parameter conditions t amb = 25 c; gnd = 0v typical unit t plh t phl propagation delay nax to nyx c l = 50pf; v cc = 3.3v 1.9 2.0 ns c in input capacitance v i = 0v or 3.0v 4 pf c out output capacitance outputs disabled; v o = 0v or 3.0v 8 pf i ccz total supply current outputs disabled; v cc = 3.6v 0.13 ma ordering information packages temperature range outside north america north america dwg number 20-pin plastic sol 40 c to +85 c 74lvt244b d 74lvt244b d sot163-1 20-pin plastic ssop type ii 40 c to +85 c 74lvt244b db 74lvt244b db sot339-1 20-pin plastic tssop type i 40 c to +85 c 74lvt244b pw 7lvt244bpw dh sot360-1
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 12 3 pin configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1oe 1a0 2y3 1a1 2y2 1a2 2y1 1a3 2y0 1y3 gnd 2a1 1y2 2a2 1y1 2a3 1y0 2oe v cc 2a0 sv00010 pin description pin number symbol name and function 2, 4, 6, 8 1a0 1a3 data inputs 11. 13, 15, 17 2a0 2a3 data inputs 18, 16, 14, 12 1y0 1y3 data outputs 9, 7, 5, 3 2y0 2y3 data outputs 1, 19 1oe , 2oe output enables 10 gnd ground (0v) 20 v cc positive supply voltage logic symbol 1oe 1 1a0 2 1a1 4 1a2 6 1a3 8 2oe 19 2a0 11 2a1 18 13 2a2 15 16 2a3 17 14 12 1y0 1y1 1y2 1y3 2y0 2y1 2y2 2y3 9 7 5 3 sv00011 function table inputs outputs noe 1 nax nyx l l l l h h h x z h = high voltage level l = low voltage level x = don't care z = high impedance ooff o state
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 12 4 logic symbol (ieee/iec) 1 2 18 4 16 6 14 8 12 19 11 9 13 7 15 5 17 3 en en sv00012 absolute maximum ratings 1, 2 symbol parameter conditions rating unit v cc dc supply voltage 0.5 to +4.6 v v i dc input voltage 3 0.5 to +7.0 v v out dc output voltage 3 output in off or high state 0.5 to +7.0 v i out dc out p ut current output in low state 128 ma i out dc out ut current output in high state 64 ma i ik dc input diode current v i < 0 50 ma i ok dc output diode current v o < 0 50 ma t stg storage temperature range 65 to 150 c notes: 1. stresses beyond those listed may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under arecommended operating conditionso is not implied. exposur e to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. the performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create ju nction temperatures which are detrimental to reliability. the maximum junction temperature of this integrated circuit should not excee d 150 c. 3. the input and output voltage ratings may be exceeded if the input and output current ratings are observed. recommended operating conditions symbol parameter limits unit symbol parameter min max unit v cc dc supply voltage 2.7 3.6 v v i input voltage 0 5.5 v v ih high-level input voltage 2.0 v v il low-level input voltage 0.8 v i oh high-level output current 32 ma i ol low-level output current 32 ma i ol low-level output current; current duty cycle 50%, f 1khz 64 ma d t/ d v input transition rise or fall rate; outputs enabled 10 ns/v t amb operating free-air temperature range 40 +85 c
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 12 5 dc electrical characteristics limits symbol parameter test conditions temp = -40 c to +85 c unit min typ 1 max v ik input clamp voltage v cc = 2.7v; i ik = 18ma 0.9 1.2 v v cc = 2.7 to 3.6v; i oh = 100 m a v cc -0.2 v cc -0.1 v oh high-level output voltage v cc = 2.7v; i oh = 8ma 2.4 2.5 v v cc = 3.0v; i oh = 32ma 2.0 2.2 v cc = 2.7v; i ol = 100 m a 0.1 0.2 v cc = 2.7v; i ol = 24ma 0.3 0.5 v ol low-level output voltage v cc = 3.0v; i ol = 16ma 0.25 0.4 v v cc = 3.0v; i ol = 32ma 0.3 0.5 v cc = 3.0v; i ol = 64ma 0.4 0.55 v cc = 0 or 3.6v; v i = 5.5v 0.1 10 i i in p ut leakage current v cc = 3.6v; v i = v cc or gnd control pins 0.1 1 m a i i in ut leakage current v cc = 3.6v; v i = v cc data pins 4 0.1 1 m a v cc = 3.6v; v i = 0 data pins 4 1 -5 i off output off current v cc = 0v; v i or v o = 0 to 4.5v 1 100 m a 6 v cc = 3v; v i = 0.8v 75 130 i hold bus hold current a inputs 6 v cc = 3v; v i = 2.0v 75 140 m a v cc = 0v to 3.6v; v cc = 3.6v 500 i ex current into an output in the high state when v o > v cc v o = 5.5v; v cc = 3.0v 60 125 m a i pu/pd power up/down 3-state output current 3 v cc 1.2v; v o = 0.5v to v cc ; v i = gnd or v cc ; oe/oe = don't care 1 100 m a i ozh 3-state output high current v cc = 3.6v; v o = 3v; v i = v il or v ih 1 5 m a i ozl 3-state output low current v cc = 3.6v; v o = 0.5v; v i = v il or v ih 1 5 m a i cch v cc = 3.6v; outputs high, v i = gnd or v cc, i o = 0 0.13 0.19 i ccl quiescent supply current v cc = 3.6v; outputs low, v i = gnd or v cc, i o = 0 2 5 ma i ccz v cc = 3.6v; outputs disabled; v i = gnd or v cc, i o = 0 5 0.13 0.19 d i cc additional supply current per input pin 2 v cc = 3v to 3.6v; one input at v cc -0.6v, other inputs at v cc or gnd 0.1 0.2 ma notes: 1. all typical values are at t amb = 25 c. 2. this is the increase in supply current for each input at the specified voltage level other than v cc or gnd 3. this parameter is valid for any v cc between 0v and 1.2v with a transition time of up to 10msec. from v cc = 1.2v to v cc = 3.3v 0.3v a transition time of 100 m sec is permitted. this parameter is valid for t amb = 25 c only. 4. unused pins at v cc or gnd. 5. i ccz is measured with outputs pulled to v cc or gnd. 6. this is the bus hold overdrive current required to force the input to the opposite logic state. ac characteristics gnd = 0v; t r = t f = 2.5ns; c l = 50pf; r l = 500 w ; t amb = 40 c to +85 c. limits symbol parameter waveform v cc = 3.3v 0.3v v cc = 2.7v unit min typ 1 max max t plh t phl propagation delay nax to nyx 1 1.1 1.3 1.9 2.0 3.5 3.3 3.8 3.6 ns t pzh t pzl output enable time to high and low level 2 1.1 1.4 2.8 2.3 4.5 4.4 5.3 4.9 ns t phz t plz output disable time from high and low level 2 1.9 1.8 2.9 2.5 4.4 4.4 4.5 4.4 ns
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 12 6 note: 1. all typical values are at v cc = 3.3v and t amb = 25 c. ac waveforms v m = 1.5v, v in = gnd to 2.7v nax input v m v m nyx output v m v m t plh t phl sa00016 3.0v or v cc whichever is less 0v v oh v ol waveform 1. input (nax) to output (nyx) propagation delays oe input t pzh t phz yn output v oh yn output v ol t pzl t plz 3.0v 0v v ol + 0.3v v oh 0.3v 2.7v 1.5v 1.5v 1.5v 1.5v 0v sv00103 waveform 2. 3-state output enable and disable times test circuit and waveforms v m v m t w amp (v) negative pulse 10% 10% 90% 90% 0v v m v m t w amp (v) positive pulse 90% 90% 10% 10% 0v t thl (t f ) t tlh (t r )t thl (t f ) t tlh (t r ) v m = 1.5v input pulse definition definitions r l = load resistor; see ac characteristics for value. c l = load capacitance includes jig and probe capacitance; see ac characteristics for value. r t = termination resistance should be equal to z out of pulse generators. input pulse requirements family 74lvt pulse generator v in d.u.t. v out c l v cc r l test circuit for 3-state outputs 6.0v r t r l sv00092 open gnd switch position test switch t plh /t phl t plz /t pzl t phz /t pzh open 6v gnd amplitude rep. rate t w t r t f 2.7v 10mhz 500ns 2.5ns 2.5ns
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 7 so20: plastic small outline package; 20 leads; body width 7.5 mm sot163-1
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 8 ssop20: plastic shrink small outline package; 20 leads; body width 5.3 mm sot339-1
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) 1998 nov 9 tssop20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1
philips semiconductors product specification 74lvt244b 3.3v octal buffer/line driver (3-state) yyyy mmm dd 10 definitions short-form specification e the data in a short-form specification is extracted from a full data sheet with the same type number and title. for detailed information see the relevant data sheet or data handbook. limiting values definition e limiting values given are in accordance with the absolute maximum rating system (iec 134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the dev ice at these or at any other conditions above those given in the characteristics sections of the specification is not implied. exposure to limi ting values for extended periods may affect device reliability. application information e applications that are described herein for any of these products are for illustrative purposes only. philips semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. disclaimers life support e these products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. philips semiconductors customers using or selling these products for use i n such applications do so at their own risk and agree to fully indemnify philips semiconductors for any damages resulting from such application. right to make changes e philips semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. philips semiconductors ass umes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or m ask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right in fringement, unless otherwise specified. philips semiconductors 811 east arques avenue p.o. box 3409 sunnyvale, california 940883409 telephone 800-234-7381 ? copyright philips electronics north america corporation 1998 all rights reserved. printed in u.s.a. print code date of release: 05-96 document order number: 9397-750-04814
data sheet status objective specification preliminary specification product specification product status development qualification production definition [1] this data sheet contains the design target or goal specifications for product development. specification may change in any manner without notice. this data sheet contains preliminary data, and supplementary data will be published at a later date. philips semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. this data sheet contains final specifications. philips semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. data sheet status [1] please consult the most recently issued datasheet before initiating or completing a design.

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