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HD74ALVCH162373 16-bit transparent d-type latches with 3-state outputs ade-205-179 (z) preliminary 1st. edition december 1996 description the HD74ALVCH162373 is particularly suitable for implementing buffer registers, i/o ports, bidirectional bus drivers, and working registers. it can be used as two 8-bit latches or one 16-bit latch. when the latch enable (le) input is high, the q outputs follow the data (d) inputs. when le is taken low, the q outputs are latched at the levels set up at the d inputs. active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. all outputs, which are designed to sink up to 12 ma, include 26 w resistors to reduce overshoot and undershoot. features v cc = 2.3 v to 3.6 v typical v ol ground bounce < 0.8 v (@v cc = 3.3 v, ta = 25?) typical v oh undershoot > 2.0 v (@v cc = 3.3 v, ta = 25?) high output current ?2 ma (@v cc = 3.0 v) bus hold on data inputs eliminates the need for external pullup / pulldown resistors all outputs have equivalent 26 w series resistors, so no external resistors are required.
HD74ALVCH162373 2 function table inputs output q oe le d lhhh lh l l ll x q 0 *1 hxxz h : high level l : low level x : immaterial z : high impedance note: 1. output level before the indicated steady state input conditions were established.
HD74ALVCH162373 3 pin arrangement (top view) 1 2 3 4 5 6 7 8 9 10 v cc v cc 1q1 1q2 gnd 1q3 1q4 1q5 1q6 gnd 1q7 1q8 2q1 2q2 gnd 2q3 2q4 2q5 2q6 gnd 2q7 2q8 2 oe 1 oe 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 2le 2d8 2d7 gnd 2d6 2d5 2d4 2d3 gnd 2d2 2d1 1d8 1d7 gnd 1d6 1d5 1d4 1d3 1d2 1le gnd 1d1 v cc v cc
HD74ALVCH162373 4 absolute maximum ratings item symbol ratings unit conditions supply voltage v cc ?.5 to 4.6 v input voltage *1 v i ?.5 to 4.6 v output voltage *1, 2 v o ?.5 to v cc +0.5 v input clamp current i ik ?0 ma v i < 0 output clamp current i ok 50 ma v o < 0 or v o > v cc continuous output current i o 50 ma v o = 0 to v cc 100 maximum power dissipation at ta = 55 c (in still air) *3 p t 0.85 w tssop storage temperature tstg ?5 to 150 c notes: stresses beyond those listed under ?bsolute maximum ratings?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 ?ecommended operating conditions?is not implied. exposure to absolute maximum rated conditions for extended periods may affect device reliability. 1. the input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. 2. this value is limited to 4.6 v maximum. 3. the maximum package power dissipation is calculated using a junction temperature of 150 c and a board trace length of 750 mils. recommended operating conditions item symbol min max unit conditions supply voltage v cc 2.3 3.6 v input voltage v i 0v cc v output voltage v o 0v cc v high level output current i oh 6mav cc = 2.3 v 8 v cc = 2.7 v ?2 v cc = 3.0 v low level output current i ol 6 ma v cc = 2.3 v ? v cc = 2.7 v ?2 v cc = 3.0 v input transition rise or fall rate d t / d v 0 10 ns / v operating temperature ta ?0 85 c note: unused control inputs must be held high or low to prevent them from floating.
HD74ALVCH162373 5 logic diagram 1 oe 1le c1 1d 1d1 1q1 to seven other channels to seven other channels 1 48 47 2 2 oe 2le c1 1d 2d1 2q1 24 25 36 13
HD74ALVCH162373 6 electrical characteristics (ta = ?0 to 85?) item symbol v cc (v) *1 min max unit test conditions input voltage v ih 2.3 to 2.7 1.7 v 2.7 to 3.6 2.0 v il 2.3 to 2.7 0.7 2.7 to 3.6 0.8 output voltage v oh min to max v cc ?.2 v i oh = ?00 m a 2.3 1.9 i oh = ? ma, v ih = 1.7 v 2.3 1.7 i oh = ? ma, v ih = 1.7 v 3.0 2.4 i oh = ? ma, v ih = 2.0 v 2.7 2.0 i oh = ? ma, v ih = 2.0 v 3.0 2.0 i oh = ?2 ma, v ih = 2.0 v v ol min to max 0.2 i ol = 100 m a 2.3 0.4 i ol = 4 ma, v il = 0.7 v 2.3 0.55 i ol = 6 ma, v il = 0.7 v 3.0 0.55 i ol = 6 ma, v il = 0.8 v 2.7 0.6 i ol = 8 ma, v il = 0.8 v 3.0 0.8 i ol = 12 ma, v il = 0.8 v input current i in 3.6 5 m av in = v cc or gnd i in (hold) 2.3 45 v in = 0.7 v 2.3 ?5 v in = 1.7 v 3.0 75 v in = 0.8 v 3.0 ?5 v in = 2.0 v 3.6 500 v in = 0 to 3.6 v off state output current *2 i oz 3.6 10 m av out = v cc or gnd quiescent supply current i cc 3.6 40 m av in = v cc or gnd d i cc 3.0 to 3.6 750 m av in = one input at (v cc ?.6) v, other inputs at v cc or gnd notes: 1. for conditions shown as min or max, use the appropriate values under recommended operating conditions. 2. for i/o ports, the parameter i oz includes the input leakage current.
HD74ALVCH162373 7 switching characteristics (ta = ?0 to 85?) item symbol v cc (v) min typ max unit from (input) to (output) propagation delay time t plh 2.5 0.2 1.0 5.6 ns d q t phl 2.7 5.0 3.3 0.3 1.1 4.2 2.5 0.2 1.0 6.0 le q 2.7 5.3 3.3 0.3 1.0 4.5 output enable time t zh 2.5 0.2 1.0 7.0 ns oe q t zl 2.7 6.4 3.3 0.3 1.0 5.3 output disable time t hz 2.5 0.2 1.9 5.8 ns oe q t lz 2.7 5.0 3.3 0.3 1.4 4.6 setup time t su 2.5 0.2 1.0 ns 2.7 1.0 3.3 0.3 1.1 hold time t h 2.5 0.2 1.5 ns 2.7 1.7 3.3 0.3 1.4 pulse width t w 2.5 0.2 3.3 ns 2.7 3.3 3.3 0.3 3.3 input capacitance c in 3.3 3.0 pf control inputs 3.3 6.0 data inputs output capacitance c o 3.3 7.0 pf
HD74ALVCH162373 8 500 w c = 50 pf l l 500 w s1 *1 see under table gnd open load circuit for outputs note: 1. c includes probe and jig capacitance. symbol t / t plh phl open gnd 4.6 v 6.0 v t / t zh hz t / t zl lz t / t / t su h w open gnd vcc=2.7v, 3.3 0.3v vcc=2.5 0.2v ?test circuit
HD74ALVCH162373 9 t plh t phl t su t h v oh v ol t w gnd v ih gnd v ih gnd v ih gnd v ih v ref v ref v ref v ref v ref v ref v ref v ref v ref input output timing input data input input ?waveforms ?1 ?waveforms ?2 10 % 90 % tr tf 10 % 90 % 10 % 90 % tr
HD74ALVCH162373 10 v ?0.3 v oh v + 0.3 v ol t zl t lz t zh t hz v oh v ol waveform - a output control waveform - b gnd v ih ? v ol1 ? v oh1 v ref v ref v ref v ref test v ih v ref v oh1 v ol1 1.2 v 1.5 v 2.3 v 3.0 v gnd 2.3 v 2.7 v gnd vcc=2.7v, 3.3 0.3v vcc=2.5 0.2v notes: 1. all input pulses are supplied by generators having the following characteristics: prr 10 mhz, zo = 50 w , tr 2.5 ns, tf 2.5 ns. 2. waveform ?a is for an output with internal conditions such that the output is low except when disabled by the output control. 3. waveform ?b is for an output with internal conditions such that the output is high except when disabled by the output control. 4. the output are measured one at a time with one transition per measurement. ?waveforms ?3 tr tf 10 % 10 % 90 % 90 %
HD74ALVCH162373 11 package dimensions unit : mm 0.08 m 0.20 124 25 48 +0.1 ?.05 +0.3 ?.1 12.50 +0.3 ?.1 6.10 0.50 0.10 0.65 max 1.20 max 0.05 min 0.15 0.05 8.10 0.3 10 max 0.50 0.1 hitachi code jedec code eiaj code ttp-48dc
cautions 1. hitachi neither warrants nor grants licenses of any rights of hitachi?s or any third party?s patent, copyright, trademark, or other intellectual property rights for information contained in this document. hitachi bears no responsibility for problems that may arise with third party?s rights, including intellectual property rights, in connection with use of the information contained in this document. 2. products and product specifications may be subject to change without notice. confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. hitachi makes every attempt to ensure that its products are of high quality and reliability. however, contact hitachi?s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. design your application so that the product is used within the ranges guaranteed by hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail- safes, so that the equipment incorporating hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the hitachi product. 5. this product is not designed to be radiation resistant. 6. no one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from hitachi. 7. contact hitachi?s sales office for any questions regarding this document or hitachi semiconductor products. hitachi, ltd. semiconductor & integrated circuits. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan tel: tokyo (03) 3270-2111 fax: (03) 3270-5109 copyright ? hitachi, ltd., 1999. all rights reserved. printed in japan. hitachi asia pte. ltd. 16 collyer quay #20-00 hitachi tower singapore 049318 tel: 535-2100 fax: 535-1533 url northamerica : http:semiconductor.hitachi.com/ europe : http://www.hitachi-eu.com/hel/ecg asia (singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm asia (taiwan) : http://www.hitachi.com.tw/e/product/sicd_frame.htm asia (hongkong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm japan : http://www.hitachi.co.jp/sicd/indx.htm hitachi asia ltd. taipei branch office 3f, hung kuo building. no.167, tun-hwa north road, taipei (105) tel: <886> (2) 2718-3666 fax: <886> (2) 2718-8180 hitachi asia (hong kong) ltd. group iii (electronic components) 7/f., north tower, world finance centre, harbour city, canton road, tsim sha tsui, kowloon, hong kong tel: <852> (2) 735 9218 fax: <852> (2) 730 0281 telex: 40815 hitec hx hitachi europe ltd. electronic components group. whitebrook park lower cookham road maidenhead berkshire sl6 8ya, united kingdom tel: <44> (1628) 585000 fax: <44> (1628) 778322 hitachi europe gmbh electronic components group dornacher strae 3 d-85622 feldkirchen, munich germany tel: <49> (89) 9 9180-0 fax: <49> (89) 9 29 30 00 hitachi semiconductor (america) inc. 179 east tasman drive, san jose,ca 95134 tel: <1> (408) 433-1990 fax: <1>(408) 433-0223 for further information write to:

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