174 54156 /74156 Dual 2-Line -to -4 - Line Decoder /Demultiplexer with Open - Collector Output bositive logic: see function table and 2G inputs grounded. Schottky TTL HighSpeed TTL Low-Power Schottky TTL Standard TTL Low Power TTL ~ 7 a - 7 7 1 Device T Package Device T Package Device T. Package D T Package Device T Package evice eo evice e+. evice e evice e evice el P? CP [M [CF P 1c iP IM [CF ype ic [PM [CF] YPe Ic Ip oF ye lc PM oF TA 1 SN54LS156 Jen! IWapF SN 54156 J wo 1 a VT YSN US 156 SaIN tA TSN false J IND | | | . FMS4LS156 FM9LSi56 | 0 TE OG : 1 1 FAIRCHILD f--o= one pe mene | tO7ALS156/ FCSLSI56 | DD | Pa To] FC7A156 oe fea! { ! + | ee L _ Lo | . 1 . i MOTOROLA : : [[Momusiss pi I MC 74156 Pops ! : ' OMS4L S156 oad DM 54156 Ju TWO N.S. C. 7 mo 1 Pomrasise Sat DM 74156 JANG) Twa - t " t Y . ae pen me oe et ee end PHILIPS ! t N74 S156 a N74156 y i S54156 Fe wBa Wa) SIGNETICS }-___---|.- .. - ee ee au | onde | cree . a we de Peo. . - ; + SIEMENS ' ! 7 TeLviei io! i i ! : : Fusitsu. f.____+-4.-} 4 wees i fe pce i. \ 4 7 " : I HITACHI [~~ I Provcsiss | est" fapzaise pea Ty tt re _ a ete { | iy. _ MITSUBISH tot , M5356 Pa, t * NEC HPB2156 Dal i r - TOSHIBA | | Electrical Characteristics SN54LS l 56 SN74LS 156 : / | Function Tables absolute maximum ratings over operatin free- air temperature range e P e P 8 156. LS156 2-LINE-TO-4-LINE DECODER OR 1-LINE-TO-4. INF DEMULTIPLEXER Supply voltage, Voc 7V_| Operating free-air [_snsais 85C to 125C TNPUTS OUTPUTS iNPUTS | OUTPUTS Input voltage WwW temperature range SN74iS oc to 70C SELECT [STROBE | DATA [SELeotISTROBE! DATA ~ Si ion 65C 150C BA IG te 'vo iv WWw2 13 G&A 2G 2c lava Zyl 22 23 torage temperature range TESCO to IS xX HTX TH HOCH HT 4 x | H H H A] . eae Loe L ! H L H 4 H bLoit L L bok 4 H H recommended operating conditions LOK cof 4 [He cow 4 coalie Lo} HL oH OW T HOLL L H i 4 H L H HOU L | L 'H H L H SNS4LS156 | SN74LS156 | ww foe nolan Hw o8 halo fu ow w# oH oL MIN NOM MAX;|MIN NOM MAX UNIT x x x | bt fH H H Hq x x] x i ow oH H H H Supply voltage, Voc 45 5 5.5 14,75 5 S25] Vv High-level output voltage, VOH 5.5 a5tV ; Low-level output current, ToL. 4 atma 156, 'LS156 3-LINE-TO-8.LINE DECODER OR 1-LINE-TO-8-LINE DEMULTIPLEXER Operating free-air temperature, TA, 55 125 0 70} C INPUTS OUTPUTS isti i - TROBE - ~ | electrical characteristics over recommended operating secect |STROB' o m @ 3 @ @ free-air temperature range {cece ee neuf OR DATA PARAMETER TEST CONDITIONSt [MIN Typ MAX UNIT c+ 8 : a eve ant ae ae we aw we us VEH High-level input voltage 2 Vv x x i t LoL L L L H H H H H H H Vit _ Low-level input voltage al a8) Vv Lot H L H l H H H H H H VI Input clamp voltage Voc =MIN, Vy =-l8mA -L5S!1Vv Voo =MIN Vig cv en L H oH tf HH H H HW OH High-level output current cos Hee 100 | uA L oH oH L H oH H & H H HH Vit =0. 8V, Vou =5.5V Von =MIN Vin ca HOLL L H H H H UL H HH VOL Low-level output voltage ven av, an _ ' 0.35 O51 V HOoL H L H H H H H L H H , 1a OL = 8mA a HOH OL L H oH H H H H LH Input current at maximum _ _ 4 Input voltage Voc =MAX, Vv, =1V O.1} mA H oH oH L H oH H H H HK HOL "WH High-level input ourrent Voc =MAX, Vi =2.7V 20| #4 4C =inputs 1C and 2C connected together Te Low-level input current Veco =MAXx, Vv; =0.4V 0.4| mA *G =inputs 1G and 2G connected together H =high level, L =low level, X =irrelevant \ Supply current Voc =MAX, SNSALS 156 6.1 10] A : ce See Note 2 SN74L S156 6.1 10 Functional Block Diagram teLH | from A, B, 2C, 1G, or 2G 2 1Voc =5V,. | 25 40| 9s >" tpyt | to output 2 [Ta =25c, 34 Bil as sTRoBE (2 re oureur tPLH . LEVELS 3) Cy =!5pF, 31 46] ns iPHL trom A or 8 to output Y OF Loaic <a Ro = 2a [34 Sits pata a |_ (6) oyrrut 1 ~~ 3 { PLH | trom 16 to output See Note 3 _ 32 481 ns 'PHL 3 32 48 | ns Le oyreur 1 i 1 SELECT sad Pin Assignment (Top View ) 8 lhe #1 ovreus SELECT DATA sTRe INPUT ouTeuTs @ 2G A 22 vo 16U15yl4U3 EZ 1ipjioly 9 Ls {91 oyteur secect 13) 2 av a > +->_4 ay { 2G 2t aBA {II ourrur e pata_!15! ,? output haw obs 2 \? iyi stmoge mwa (> Le ouresst 1 a 3 x 2 6. 8 756, 'LS156 DUAL 2LINE-T0-4-LINE Oe tc 1G INPUT 8 ouTPuTs NOTE 2: iggis measured with outputs open, A, B, and | C inputs at 4.5V, and 2C, 1G, tFor conditions shown as MIN or MAX, use the appropriate value specified under recommended operations conditions. TALL typical values are at Voc =5V, Ta 25C *TPLH 2 propagation delay time, low- to high-level output PHL = propagation delay time, high: to low -levd output