hd74lv138a 3-to-8 line decoder / demultiplexers ade-205-261 (z) 1st edition march 1999 description the hd74lv138a is designed to be used in high-performance memory-decoding or data-routing applica- tions requiring very short propagation delay times. the conditions at the binary-select inputs and the three enable inputs select one of eight input lines. two active-low and one active-high enable inputs reduce the need for external gates or inverters when ex- panding. a 24-line decoder can be implemented without external inverters and a 32-line decoder requires only one inverter. an enable input can be used as a data input for demultiplexing applications. low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook comput- ers), and the low-power consumption extends the battery life. features ?v cc = 2.0 v to 5.5 v operation ? all inputs v ih (max.) = 5.5 v (@v cc = 0 v to 5.5 v) ? all outputs v o (max.) = 5.5 v (@v cc = 0 v) ? typical v ol ground bounce < 0.8 v (@v cc = 3.3 v, ta = 25 c) ? typical v oh undershoot > 2.3 v (@v cc = 3.3 v, ta = 25 c) ? output current 6 ma (@v cc = 3.0 v to 3.6 v), 12 ma (@v cc = 4.5 v to 5.5 v) function table enable inputs select inputs outputs g1 g 2a g 2bc b a y0y1y2y3y4y5y6y7 xhxxxxhhhhhhhh xxhxxxhhhhhhhh lxxxxxhhhhhhhh hllllllhhhhhhh hl l l l hhl hhhhhh hlllhlhhlhhhhh hl l l hhhhhl hhhh hl l hl l hhhhl hhh hl l hl hhhhhhl hh hl l hhl hhhhhhl h hl l hhhhhhhhhhl a
hd74lv138a 2 note: h:high level l:low level x:immaterial pin arrangement absolute maximum ratings notes: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. 1.the input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2.this value is limited to 5.5 v maximum. 3.the maximum package power dissipation was calculated using a junction temperature of 150 c. item symbol ratings unit conditions supply voltage range v cc C0.5 to 7.0 v input voltage range* 1 v i C0.5 to 7.0 v output voltage range* 1, 2 v o C0.5 to v cc + 0.5 v output: h or l C0.5 to 7.0 v cc : off input clamp current i ik C20 ma v i < 0 output clamp current i ok 50 ma v o < 0 or v o > v cc continuous output current i o 25 ma v o = 0 to v cc continuous current through v cc or gnd i cc or i gnd 50 ma maximum power dissipation at ta = 25 c (in still air)* 3 p t 785 mw sop 500 tssop storage temperature tstg C65 to 150 c 13 14 11 12 15 16 9 10 v cc y1 y0 y2 y3 y4 1 2 3 4 5 6 7 8 a b c g 2a g 2b g1 y7 gnd y5 y6 (top view)
hd74lv138a 3 recommended operating conditions note: unused or floating inputs must be held high or low. logic diagram item symbol min max unit conditions supply voltage range v cc 2.0 5.5 v input voltage range v i 05.5v output voltage range v o 0v cc vh or l output current i oh C50 m av cc = 2.0 v C2 mav cc = 2.3 to 2.7 v C6 v cc = 3.0 to 3.6 v C12 v cc = 4.5 to 5.5 v i ol 50 m av cc = 2.0 v 2 mav cc = 2.3 to 2.7 v 6 v cc = 3.0 to 3.6 v 12 v cc = 4.5 to 5.5 v input transition rise or fall rate d t/ d v0 200 ns/v v cc = 2.3 to 2.7 v 0100 v cc = 3.0 to 3.6 v 020 v cc = 4.5 to 5.5 v operating free-air temperature ta C40 85 c select inputs data outputs a 1 2 3 15 y0 y1 y2 y3 y4 y5 y6 y7 14 13 12 11 10 9 7 4 5 6 b c g 2a g 2b g1 enable inputs
hd74lv138a 4 dc electrical characteristics ? ta = C40 to 85 c ? ? note:for conditions shown as min or max, use the appropriate values under recommended operating conditions. item symbol v cc (v)* min typ max unit test conditions input voltage v ih 2.0 1.5 v 2.3 to 2.7 v cc 0.7 3.0 to 3.6 v cc 0.7 4.5 to 5.5 v cc 0.7 v il 2.0 0.5 2.3 to 2.7 v cc 0.3 3.0 to 3.6 v cc 0.3 4.5 to 5.5 v cc 0.3 output voltage v oh min to max v cc C 0.1 v i oh = C50 m a 2.3 2.0 i oh = C2 ma 3.0 2.48 i oh = C6 ma 4.5 3.8 i oh = C12 ma v ol min to max 0.1 i ol = 50 m a 2.3 0.4 i ol = 2 ma 3.0 0.44 i ol = 6 ma 4.5 0.55 i ol = 12 ma input current i in 0 to 5.5 1 m av i = 5.5 v or gnd quiescent supply current i cc 5.5 20 m av i = v cc or gnd, i o = 0 output leakage current i off 0 5 m av i or v o = 0 v to 5.5 v input capacitance c in 3.3 1.7 pf v i = v cc or gnd
hd74lv138a 5 switching characteristics ? v cc = 2.5 0.2 v ? ? v cc = 3.3 0.3 v ? switching characteristics (cont) ? v cc = 5.0 0.5 v ? ta = 25 c ta = C40 to 85 c item symbol min typ max min max unit test conditions from (input) to (out- put) propa- gation delay time t plh t phl 11.7 17.6 1.0 21.0 ns c l = 15 pf a, b, c y 14.9 21.4 1.0 25.0 c l = 50 pf 12.3 19.2 1.0 22.0 c l = 15 pf g1 15.7 22.6 1.0 26.0 c l = 50 pf 11.4 18.2 1.0 21.0 c l = 15 pf g 2a, g 2b 14.8 22.0 1.0 25.0 c l = 50 pf ta = 25 c ta = C40 to 85 c item symbol min typ max min max unit test conditions from (input) to (out- put) propa- gation delay time t plh t phl 8.1 11.4 1.0 13.5 ns c l = 15 pf a, b, c y 10.3 15.8 1.0 18.0 c l = 50 pf 8.4 12.8 1.0 15.0 c l = 15 pf g1 10.6 16.3 1.0 18.5 c l = 50 pf 7.8 11.4 1.0 13.5 c l = 15 pf g 2a, g 2b 10.0 14.9 1.0 17.0 c l = 50 pf ta = 25 c ta = C40 to 85 c item symbol min typ max min max unit test conditions from (input) to (out- put) propa- gation delay time t plh t phl 5.6 8.1 1.0 9.5 ns c l = 15 pf a, b, c y 7.0 10.1 1.0 11.5 c l = 50 pf 5.7 8.1 1.0 9.5 c l = 15 pf g1 7.1 10.1 1.0 11.5 c l = 50 pf 5.4 8.1 1.0 9.5 c l = 15 pf g 2a, g 2b 6.8 10.1 1.0 11.5 c l = 50 pf
hd74lv138a 6 operating characteristics ? c l = 50 pf ? test circuit ta = 25 c item symbol v cc (v) min typ max unit test conditions power dissipation capacitance c pd 3.3 16.8 pf f = 10 mhz 5.0 19.1 l * note: c includes the probe and jig capacitance. measurement point c l t plh t phl v oh v ol 0 v v cc v oh v ol t phl t plh 10% 90% cc 50% v cc 50% v cc 50% v cc 50% v cc 50% v cc 50% v 10% 90% input in phase output out of phase output t r r t f f ?waveform 1. input waveform: prr 1 mhz, zo = 50 , t 3 ns, t 3 ns 2. the output is measured one at a time with one transition per measurement. notes:
hd74lv138a 7 package dimensions hitachi code jedec eiaj weight (reference value) fp-16da conforms 0.24 g 0.22 0.05 0.42 0.08 0.12 0.15 m 2.20 max 5.5 10.06 0.80 max 16 9 1 8 10.5 max + 0.20 ?0.30 7.80 0.70 0.20 0 ?8 0.10 0.10 1.15 1.27 0.40 0.06 0.20 0.04 dimension including the plating thickness base material dimension hitachi code jedec eiaj weight (reference value) fp-16dn conforms conforms 0.15 g unit: mm dimension including the plating thickness base material dimension 1.27 16 9 1 8 0.15 0.25 m 1.75 max 3.95 *0.22 0.03 9.9 0 ?8 10.3 max + 0.10 ?0.30 6.10 + 0.67 ?0.20 0.60 + 0.11 ?0.04 0.14 0.42 0.08 0.635 max 0.40 0.06 0.20 0.03 1.08
hd74lv138a 8 cautions 1. hitachi neither warrants nor grants licenses of any rights of hitachis or any third partys patent, copy- right, trademark, or other intellectual property rights for information contained in this document. hitachi bears no responsibility for problems that may arise with third partys 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 re- ceived 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, con- tact hitachis 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 in 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 fail- ure modes in semiconductor devices and employ systemic measures such as fail-safe devices, so that the equipment incorporating the 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 hitachis sales office for any questions regarding this document or hitachi semiconductor prod- ucts. 0.50 0.10 0 ?8 0.17 0.05 6.40 0.20 0.10 1.10 max 0.13 m 0.65 18 16 9 4.40 5.0 5.3 max 0.07 +0.03 ?.04 0.65 max 1.0 hitachi code jedec eiaj weight (reference value) ttp-16da 0.05 g 0.20 0.06 + 0.08 ?0.07 0.22 0.15 0.04 dimension including the plating thickness base material dimension
hd74lv138a 9 hitachi, ltd. semiconductor & ic div. 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., 1998. 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 stra? 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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