HD74BC240A octal buffers/line drivers with 3 state outputs ade-205-006a (z) 2nd. edition mar. 1993 description the HD74BC240A provides high drivability and operation equal to or better than high speed bipolar standard logic ic by using bi-cmos process. the device features low power dissipation that is about 1/5 of high speed bipolar logic ic, when the frequency is 10 mhz. the device has eight inverter drivers with three state outputs in a 20 pin package. this device is a non inverting buffer and has two active low enables (1 g and 2 g ). each enable independently controls 4 buffers. features input/output are at high impedance state when power supply is off. built in input pull up circuit can make input pins be open, when not used. ttl level input wide operating temperature range ta = ?0 to + 85? function table inputs g a output y hx z lh l ll h h : high level l : low level x : immaterial z : high impedance
HD74BC240A 2 pin arrangement (top view) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 gnd 1a1 2 y 4 1a2 2 y 3 1a3 2 y 2 1a4 2 y 1 v cc 2 g 1 y 1 2a4 1 y 2 2a3 1 y 3 2a2 1 y 4 2a1 1 g absolute maximum ratings item symbol rating unit supply voltage v cc ?.5 to +7.0 v input diode current i ik 30 ma input voltage v in ?.5 to +7.5 v output voltage v out ?.5 to +7.5 v off state output voltage v out(off) ?.5 to +5.5 v storage temperature tstg ?5 to +150 c note: 1. the absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
HD74BC240A 3 recommended operating conditions item symbol min typ max unit supply voltage v cc 4.5 5.0 5.5 v input voltage v in 0 v cc v output voltage v out 0 v cc v operating temperature topr ?0 85 c input rise/fall time* 1 t r , t f 0 8 ns/v note: 1. this item guarantees maximum limit when one input switches. waveform: refer to test circuit of switching characteristics. logic diagram 1 g 1a1 2 y 4 1a2 2 y 3 1a3 2 y 2 2 y 1 1a4 2 g 1 y 3 2a4 2a3 2a2 1 y 4 2a1 1 y 1 1 y 2
HD74BC240A 4 electrical characteristics (ta = ?0? to +85?) item symbol v cc (v) min max unit test conditions input voltage v ih 2.0 v v il 0.8 v output voltage v oh 4.5 2.4 v i oh = ? ma 4.5 2.0 v i oh = ?5 ma v ol 4.5 0.5 v i ol = 48 ma 4.5 0.55 v i ol = 64 ma input diode voltage v ik 4.5 ?.2 v i in = ?8 ma input current i i 5.5 ?50 m av in = 0 v 5.5 1.0 m av in = 5.5 v 5.5 100 m av in = 7.0 v short circuit output current* 1 i os 5.5 ?00 ?25 ma v in = 0 or 5.5 v off state output current i ozh 5.5 50 m av o = 2.7 v i ozl 5.5 ?0 m av o = 0.5 v supply current i ccl 5.5 27.5 ma v in = 0 or 5.5 v all outputs is ? i cch 5.5 2.5 ma v in = 0 or 5.5 v all outputs is ? i ccz 5.5 2.5 ma v in = 0 or 5.5 v all outputs is ? i cct * 2 5.5 1.5 ma v in = 3.4 or 0.5 v notes: 1. not more than one output should be shorted at a time and duration of the short circuit should not exceed one second. 2. when input by the ttl level, it shows i cc increase at per one input pin.
HD74BC240A 5 switching test method (c l = 50 pf) ta = 25 c v cc = 5.0 v ta = ?0 to 85 c v cc = 5.0 v 10% item symbol min max min max unit test conditions propagation delay time t plh 3.0 6.0 3.0 7.0 ns see under figure t phl 3.0 6.0 3.0 7.0 output enable time t zh 3.0 8.0 3.0 10.0 ns t zl 3.0 8.0 3.0 10.0 output disable time t hz 3.0 7.0 3.0 9.0 ns t lz 3.0 7.0 3.0 9.0 input capacitanse c in 3.0(typ) pf v in = v cc or gnd output capacitance c o 15.0(typ) pf v o = v cc or gnd test circuit v cc 1a1 g see function table v cc input pulse generator z out = 50 w open 7 v c = 50 pf l 50 scope w 500 w 450 w output 1a2 1a3 1a4 same as above load circuit 1 y 1 1 y 2 1 y 3 1 y 4 output *3 same as above load circuit same as above load circuit notes: 1. c l includes probe and jig capacitance. 2. 2 g , 2a1-2a4 to 2 y 1-2 y 4 are identical to above load circuit. 3. open: t plh , t phl , t zh , t hz 7 v: t zl , t lz
HD74BC240A 6 waveforms-1 v oh v ol 1.5 v input a output y 3 v 0 v 1.5 v 90% 1.5 v 10% 10% 1.5 v 90% t plh t phl t f t r notes: 1. t r = 2.5 ns, t f = 2.5 ns 2. input waveform: prr =1 mhz, duty cycle 50% waveforms-2 0 v 3 v 1.5 v 0 v 1.5 v 1.5 v 1.5 v t zl t zh t lz t hz ol v + 0.3 v oh v ?0.3 v 3.5 v v ol v oh input g waveform? waveform? t f t r 10% 90% 90% 10% notes: 1. t r = 2.5 ns, t f = 2.5 ns 2. input waveform: prr = 1 mhz, duty cycle 50% 3. waveform-a shows input conditions such that the output is ??level when enable by the output control. 4. waveform-b shows input conditions such that the output is ??level when enable by the output control.
HD74BC240A 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
HD74BC240A 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 hitachi code jedec eiaj mass (reference value) ttp-20da 0.07 g unit: mm *dimension including the plating thickness base material dimension 0.50 0.10 0 ?8 *0.17 0.05 6.40 0.20 0.10 1.10 max 0.13 m 0.65 110 20 11 4.40 6.50 6.80 max *0.22 +0.08 ?.07 0.07 +0.03 ?.04 1.0 0.65 max 0.20 0.06 0.15 0.04
HD74BC240A 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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