SN74351 TI | Alldatasheet
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DUAL DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS MARCH 1974 — REVISED DECEMBER 1963 © Dual 8-Line-to-1-Line Multiplexer That Can Replace Two SN54151, SN74151 SNIKDI ... JORN PACKAGE Multiplexers in Some Applications crop view © Four Common Data Lines Permit Simultaneous Interdigitation with Parallel-to-Serial Conversion v GUD vec 7 eae a 6q2 19] © 4-Bit Organization Is Easily Adapted to Ss wh to Handle Binary or BCD ns ee © Three-State Outputs Can Be Connected c Gs 166) 202 Directly to System Bus Lines 100 Gs +5) 203 1o1 Q7 40) pa * Enable Input Controls Impedance Levels of the 102 Gs 130 ps
12 Data Inputs and Two Outputs toa de 2A oe
“oti 01 description ono D v7 The SN74351 comprises two @-line-to-1ine data selectors/multiplexers with full decoding on one monolithic chip. Symmetrically switching, comple- FUNCTION TABLE mentary decode generators minimize decoder skew [aneors J during changes at the select inputs and ensure that eer | ors data outputs. Four data inputs are exclusive to each rm x x x) z Zz multiplexer and four are common to both, A 709 0c 00 2 common enable input is provided which, when high, tole g alee causes both outputs to assume the high-impedance Low clio 3 (off) state and simultaneously diverts the majority of \\ wlios ab 3 the input current, which reduces the load signifi: ec oyew 103 203 cantly on the data input drivers. A low logic level at bo yH Lt) Da De the enable input activates both outputs so that each to |H LH) 08 Ds wn will assume the complement of the level of the boy OH ©) 06 be uw Sieced input c[w war oF o 10> nigh tv, = tow tvel, X= eralevant S Z- high impedance (off) irr TBO, THT... 5% = The complement of the level of the respective a Dinawt e eee rooucTiON DATA " Degen seprec in aes Texas eticain te Fi Recon per theta offsets 3-991 Snr mtn, recent INSTRUMENTS ‘not necessarily include testing of allparameters, OFFICE BOX 225012 © DALLAS, TEXAS 75265.
DUAL DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS logic diagram enaate 3-2d> ‘00. L 103 ita wavs oe te ureur ve i oe tt Thiet ai: ttt seccct) 4 49 wore) ett c > UES ter eS q 02.2) ie F cara jeez INPUTS 9 94 17) Leet) 9 a Pees 5s Pomiars evan og retain sroer dor pecans. (schematics of inputs and outputs TURVALENT OF EAH NFU FVGAL OF BOTH OPA Yee f ~~ tooawom $ °° enue, 20 02: 42 NOM PA Bor Cet 65 KL NOM TEXAS % 5-982 INSTRUMENTS fost o#Pch 00x Sms © DALLAR TERA
DUAL DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS ff — absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, Vcc (seeNoteI) 2. ee Imputvoltage 2 ee BBY Storage temperature range 2 ee —65°C to 150°C NOTE 1: Voltage value are with respect to network ground termina recommended operating conditions CC | Wec Supply wottege as 5 ss) [ion Hioriewi ourpureurrent dS me] [ron towievel output eurrent Tt ml electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) [_Panameren Fes reonorrions? [win rvet_wax [unr] Vin High-level input voltage a Oe Se AA [Wy Lowievel input voltage [Vix teputclampvoiige Wg Neiman Veo = MIN, Vin =2V, Von Hish-ovel output voltage Vicosv, ttn otmal 24 34 v Voc=MIN, ViH=2V, Vou Lomievel output voltage vera, te ee v , a Veo = MAX, Vin=2V. Jozi Oftatete output current, high-level voltage appl wee aay HA Veo= MAK, Vin=2V, [ea teenie (eae | | [Input current et maximum inputvottage [Veg= MAX, vinSBv | 1 | ma | Enable, any select, n list Highlevel input current any D0theud3 | Voc=MAX, W=24V a [Darhuo7 [80 | = Enable, any select, S any DOthuD3___|Vec=MAX, vj-04v rf Ni Low-level input current [Dsthub7 | a Veo = WAX, Vi "08, a Tos _ Shortcreuit output current® [Voo=max | =13 55 | ma | Voc =MAX, SeWow? [a 65 | ma | 1 For conditions shown #8 MIN or MAX, use the appropriate value specified under recommended operating conditions tall typical values are at Voc = 5 V, Ta ~ 28°C. ‘SNot more than one output should be shorted at a time. NOTE 2: Ic¢ mestured with the anable input grounded, other inputs and beth outputs open. TEXAS ad 3.993 INSTRUMENTS OST OFFICE BOX 228012 » DALLAS, TEXAS 75265
DUAL DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS switching characteristics, Vcc = 5 V, Ta = 25°C PARAMETERS FROM TEST CONDITIONS: MIN TYP MAX neur) Y — a [20 30 | TPL mn CL=50pF, R_=4000,[ 1022 | (wu AP " See Note 3 [102 | — oe ee is —s ie [20 on z . Cr a wuz See Note 3 [020 | ——— TYPICAL APPLICATION DATA This application illustrates how common data can be interdigitated onto two serial data lines. It is useful for transmitting prefixes, suffixes, addresses, or similar functions. wuesesee Oe Se Oe CR ey OO se 7 rs wor hoa ® 11ST VARIABLE 101 3 we DATA D2 tos L_ hos ouvetsed ‘9 NEGATIVE LOGIC) ba wy P— ourruT To OFT LOT Le. -a Ey 6 ps ¥ y 4 be (rostrive Loic) La os SD lo? 9 ou common hi Ce ns DATA SN74351 Ss oe eo 6 6«NEGATIVE LOGIC) [es D bs be woes used 2yp— OUTPUT “F090 OFT TL. 203. [> j203 ye
202 VARIABLE p02 8 W
- DATA ot (POSITIVE LOGIC) variaste | COMMON 200 ___ j200 = | DATA DATA 8 (NEGATIVE LOGIC) . is a 3-994 | TEXAS % INSTRUMENTS,