hd74hc620/hd74hc623 octal bus transceivers (with inverted 3-state outputs) octal bus transceivers (with 3-state outputs) ade-205-516 (z) 1st. edition sep. 2000 description this octal bus transceiver is designed for asynchronous two-way communication between data buses. the control fuction implementation allows for maximum flexibility in timing. this device allows data transmission from the a bus to the b bus or from the b bus to the a bus depending upon the logic levels at the enable inputs ( gba and gab). the enable inputs can be used to disable the device so that the buses are effectively isolated. the dual-enable configuration gives these devices the capability to store data by simultaneous enabling of gba and gab. each output reinforces its input in this transceiver configuration. thus, when both control inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, both sets of bus lines (16 in all) will remain at their last states. the 8-bit codes appearing on the two sets of buses will be identical for the hd74hc623 or coplementary for the hd74hc620. features high speed operation: t pd (bus to bus) = 12 ns typ (c l = 50 pf) high output current: fanout of 15 lsttl loads wide operating voltage: v cc = 2 to 6 v low input current: 1 ? max low quiescent supply current: i cc (static) = 4 ? max (ta = 25?) function table enable inputs operation gba gab hd74hc620 hd74hc623 ll b data to a bus b data to a bus hh a data to b bus a data to b bus h l isolation isolation lh b data to a bus, a data to b bus b data to a bus, a data to b bus
hd74hc620/hd74hc623 2 pin arrangement 1 (top view) 2 3 4 5 8 9 10 11 12 13 16 17 18 19 20 enable gab v cc enable gba b 1 b 3 b 6 b 7 b 8 14 15 b 4 b 5 b 2 a 1 a 2 a 3 a 4 a 7 a 8 gnd 6 7 a 5 a 6 absolute maximum ratings item symbol rating unit supply voltage range v cc ?.5 to +7.0 v input voltage v in ?.5 to v cc + 0.5 v output voltage v out ?.5 to v cc + 0.5 v output current i out 35 ma dc current drain per v cc gnd i cc , i gnd 75 ma dc input diode current i ik 20 ma dc output diode current i ok 20 ma power dissipation per package p t 500 mw storage temperature tstg ?5 to +150 c
hd74hc620/hd74hc623 3 block diagram hd74hc620 v cc v cc b 1 b 2 b 3 b 4 b 5 b 6 b 7 b 8 a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 gab gba
hd74hc620/hd74hc623 4 hd74hc623 v cc v cc b 1 b 2 b 3 b 4 b 5 b 6 b 7 b 8 a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 gab gba
hd74hc620/hd74hc623 5 dc characteristics ta = 25 c ta = ?0 to +85 c item symbol v cc (v) min typ max min max unit test conditions input voltage v ih 2.0 1.5 1.5 v 4.5 3.15 3.15 6.0 4.2 4.2 v il 2.0 0.5 0.5 v 4.5 1.35 1.35 6.0 1.8 1.8 output voltage v oh 2.0 1.9 2.0 1.9 v vin = v ih or v il i oh = ?0 m a 4.5 4.4 4.5 4.4 6.0 5.9 6.0 5.9 4.5 4.18 4.13 i oh = ? ma 6.0 5.68 5.63 i oh = ?.8 ma v ol 2.0 0.0 0.1 0.1 v vin = v ih or v il i ol = 20 m a 4.5 0.0 0.1 0.1 6.0 0.0 0.1 0.1 4.5 0.26 0.33 i ol = 6 ma 6.0 0.26 0.33 i ol = 7.8 ma off-state output current i oz 6.0 0.5 5.0 m a vin = v ih or v il , vout = v cc or gnd input current iin 6.0 0.1 1.0 m a vin = v cc or gnd quiescent supply current i cc 6.0 4.0 40 m a vin = v cc or gnd, iout = 0 m a
hd74hc620/hd74hc623 6 ac characteristics (c l = 50 pf, input t r = t f = 6 ns) ta = 25 c ta = ?0 to +85 c item symbol v cc (v) min typ max min max unit test conditions propagation delay t plh 2.0 100 125 ns time t phl 4.5 12 20 25 6.0 17 21 output enable t zh 2.0 150 190 ns time t zl 4.5 12 30 38 6.0 26 33 output disable t hz 2.0 150 190 ns time t lz 4.5 16 30 38 6.0 26 33 output rise/fall t tlh 2.0 60 75 ns time t thl 4.5 4 12 15 6.0 10 13 input capacitance cin 5 10 10 pf
hd74hc620/hd74hc623 7 package dimensions hitachi code jedec eiaj mass (reference value) dp-20n conforms 1.26 g unit: mm 0.51 min 2.54 min 5.08 max 7.62 0.25 + 0.11 ?0.05 2.54 0.25 0.48 0.10 24.50 25.40 max 0.89 1.30 6.30 7.00 max 1 10 11 20 0 ?15 1.27 max hitachi code jedec eiaj mass (reference value) fp-20da conforms 0.31 g unit: mm *dimension including the plating thickness base material dimension *0.42 0.08 0.12 0.15 m 20 10 1 *0.22 0.05 0.80 max 11 12.6 5.5 2.20 max 13 max 0 ?8 0.70 0.20 + 0.20 ?0.30 7.80 1.27 0.10 0.10 1.15 0.40 0.06 0.20 0.04
hd74hc620/hd74hc623 8 hitachi code jedec eiaj mass (reference value) fp-20db conforms 0.52 g unit: mm *dimension including the plating thickness base material dimension 0.12 0.15 0 ?8 m 20 11 0.20 0.10 1 1.27 10 12.8 13.2 max 7.50 2.65 max *0.27 0.05 *0.42 0.08 + 0.57 ?0.30 0.70 + 0.25 ?0.40 10.40 1.45 0.935 max 0.40 0.06 0.25 0.04
hd74hc620/hd74hc623 9 cautions 1. hitachi neither warrants nor grants licenses of any rights of hitachi? or any third party? 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? 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? 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? 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., 2000. all rights reserved. printed in japan. hitachi asia ltd. hitachi tower 16 collyer quay #20-00, singapore 049318 tel : <65>-538-6533/538-8577 fax : <65>-538-6933/538-3877 url : http://www.hitachi.com.sg url northamerica : http://semiconductor.hitachi.com/ europe : http://www.hitachi-eu.com/hel/ecg asia : http://sicapac.hitachi-asia.com japan : http://www.hitachi.co.jp/sicd/indx.htm hitachi asia ltd. (taipei branch office) 4/f, no. 167, tun hwa north road, hung-kuo building, taipei (105), taiwan tel : <886>-(2)-2718-3666 fax : <886>-(2)-2718-8180 telex : 23222 has-tp url : http://www.hitachi.com.tw 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 url : http://www.hitachi.com.hk hitachi europe ltd. electronic components group. whitebrook park lower cookham road maidenhead berkshire sl6 8ya, united kingdom tel: <44> (1628) 585000 fax: <44> (1628) 585160 hitachi europe gmbh electronic components group dornacher stra b e 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: colophon 2.0
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