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HD74ALVC16244 16-bit buffer / driver with 3-state outputs ade-205-206 (z) preliminary 1st. edition january 1998 description this 16-bit buffer / driver is designed for 2.3 v to 3.6 v v cc operation. the HD74ALVC16244 is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus oriented receivers and transmitters. the device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. it provides true outputs and symmetrical active-low output-enable ( oe ) inputs. to ensure the high impedance state during power up or power down, oe should be tied to v cc through a pullup resistor; the minimum value of the resistor is determined by the current sinking capability of the driver. 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 ?4 ma (@v cc = 3.0 v)
HD74ALVC16244 2 function table inputs output y oe a lhh ll l hx z h : high level l : low level x : immaterial z : high impedance
HD74ALVC16244 3 pin arrangement (top view) 1 2 3 4 5 6 7 8 9 10 v cc 1 oe 1y1 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 1y2 gnd 1y3 1y4 2y1 2y2 gnd 2y3 2y4 3y1 3y2 gnd 3y3 3y4 4y1 4y2 gnd 4y3 4y4 4 oe v cc 3 oe 4a4 4a3 gnd 4a2 4a1 3a4 3a3 gnd 3a2 3a1 2a4 2a3 gnd 2a2 2a1 1a4 1a3 1a2 2 oe gnd 1a1 v cc v cc
HD74ALVC16244 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 v cc , gnd current / pin i cc or i gnd 100 ma maximum power dissipation at ta = 55 c (in still air) *3 p t 0.85 w tssop storage temperature t stg ?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 ?2 ma v cc = 2.3 v ?2 v cc = 2.7 v ?4 v cc = 3.0 v low level output current i ol ?2mav cc = 2.3 v ?2 v cc = 2.7 v ?4 v cc = 3.0 v input transition rise or fall rate d t / d v 0 10 ns / v operating temperature t a ?0 85 c note: unused control inputs must be held high or low to prevent them from floating.
HD74ALVC16244 5 logic diagram 1 oe 1 47 46 44 43 1a1 1a2 1a3 1a4 2 3 5 6 1y1 1y2 1y3 1y4 2 oe 48 41 40 38 37 2a1 2a2 2a3 2a4 8 9 11 12 2y1 2y2 2y3 2y4 3 oe 25 36 35 33 32 3a1 3a2 3a3 3a4 13 14 16 17 3y1 3y2 3y3 3y4 4 oe 24 30 29 27 26 4a1 4a2 4a3 4a4 19 20 22 23 4y1 4y2 4y3 4y4
HD74ALVC16244 6 electrical characteristics (ta = ?0 to 85?) symbo l v cc (v) 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 2.3 to 3.6 v cc ?.2 v i oh = ?00 m a 2.3 2.0 i oh = ? ma, v ih = 1.7 v 2.3 1.7 i oh = ?2 ma, v ih = 1.7 v 2.7 2.2 i oh = ?2 ma, v ih = 2.0 v 3.0 2.4 i oh = ?2 ma, v ih = 2.0 v 3.0 2.0 i oh = ?4 ma, v ih = 2.0 v v ol 2.3 to 3.6 0.2 i ol = 100 m a 2.3 0.4 i ol = 6 ma, v il = 0.7 v 2.3 0.7 i ol = 12 ma, v il = 0.7 v 2.7 0.4 i ol = 12 ma, v il = 0.8 v 3.0 0.55 i ol = 24 ma, v il = 0.8 v input current i in 3.6 5 m av in = v cc or gnd off state output current 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
HD74ALVC16244 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 3.7 ns a y t phl 2.7 3.6 3.3 0.3 1.0 3.0 output enable time t zh 2.5 0.2 1.0 5.7 ns oe y t zl 2.7 5.4 3.3 0.3 1.0 4.4 output disable time t hz 2.5 0.2 1.0 5.2 ns oe y t lz 2.7 4.6 3.3 0.3 1.0 4.1 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 outputs
HD74ALVC16244 8 test circuit 500 w c = 50 pf l 500 w s1 *1 see under table gnd open load circuit for outputs symbol t / t plh phl open open gnd cc 2 v 6.0 v t / t zh hz t / t zl lz gnd vcc=2.7v, 3.3 0.3v vcc=2.5 0.2v note: 1. c l includes probe and jig capacitance.
HD74ALVC16244 9 waveforms ?1 t plh t phl v oh v ol gnd v ih v ref v ref v ref v ref input output 10 % 90 % t rf t 10 % 90 % waveforms ?2 v ref1 v ref2 t zl t lz t zh t hz v oh v ol v cc v +0.15 v ol v ?.15 v oh v +0.3 v ol v ?.3 v oh v cc cc waveform - a output control waveform - b gnd v ih test v ih v ref v ref1 v ref2 1/2 v 1.5 v 2.7 v v oh1 v ol1 3.0 v gnd gnd vcc=2.7v, 3.3 0.3v vcc=2.5 0.2v 10 % 10 % 90 % 90 % t r t f v ref v ref v ref v ref ? v oh1 ? v ol1 notes: 1. all input pulses are supplied by generators having the following characteristics : prr 10 mhz, zo = 50 w , t r 2.0 ns, t f 2.0 ns. (v cc = 2.5 0.2 v) prr 10 mhz, zo = 50 w , t r 2.5 ns, t f 2.5 ns. (v cc = 2.7 v, 3.3 0.3 v) 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.
HD74ALVC16244 10 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 eiaj code jedec 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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