SN74LS451 ETC1 | Alldatasheet
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Dual 8:1 Mux aaa Features /Benefits Ordering Information © 24-pin SKINNYDIP® saves space PART NUMBER | packace | TEMPERATURE ‘© Twice the density of SN5/741$151 <= <= —_ « Low-eurrent PNP Inputs reduce toadin [mt "u °
Description
‘The Dual 8:1 Mux selects one of eight inputs, D0 through D7, specified by three binary select inputs, A, Band C. The true data is output on Y when strobed by S. Propagation delays are the same for inputs, addresses and strobes and are specified for 50 pF loading. Outputs conform to the: standard 8 mA LS totem- pole drive standard. Logic Symbol Function Table wo 7 fa] vee ‘STROBE 102 Pa |B B x x x H H vos [s] 1s} —f20fs boeoe L Do vs [e}—|105 | fae L L H L ob yo6 [7] 106 ay, {ia} 2v bCoH tL t 2 wor [e}—]107 207} J 207 L H H L D3 holo. L ba 200 [=}—|200 206| fa] 206 H oL OH L Ds 201 fa} {20 205} -—{75] 205 HOH OL L D6 202 [} 1734} [i] 204 H oH OH L o7 ‘ono [2] [ia] 203 a SKINNYDIP® is a registered trademark of Monolithic Memories, Monolithic TWX: 910-338-2376 2175 isin Cotge Biv, Sant Clara, CA35056-1592 Tel (wo) o7os700 Tw: oan Memories 7-20
$N54/74LS451 Logic Diagram Dual 8:1 Mux 100 + | 24 | vee lt a 1] ‘0 MN | e othe Ll a — satniatan | jainins > Sep qiiiaen > ome eo OES Ep nd be LES eiiis pqisinig=n BEES or 8 | ieisiaa Ps [peel | DHSS. 1] DRS Sp a2 | —— 14] wo ovol 12 | — 13 | —_—— Monolithic KEL memories 7-21
Supply voltage VG <.-.-e-eceseseseseescenscseeeesiseetensessseetsueesseseneteseresersseesiseesesssesesersess TOV Storage temperature... sss cssessesscsseseecseeeeesssnseeereusteeeavsceatrrsnscossesresesessrssss “65° 10 #150°C Operating Conditions SYMBOL PARAMETER MILITARY COMMERCIAL | iy MIN NOM MAX | MIN NOM MAX ‘Supply voltage 45. =5 95/475 5 §25| V | ‘Operating free-air temperature | -55 125° °C * Case temperature. Electrical Characteristics over Operating Conditions SYMBOL PARAMETER TEST CONDITIONS MIN TyPT MAX | UNIT Vi____| Low-level input voltage - — ~oal Vv Vin | High-level input voltage _ 2 v Vic__| Input clamp voltage Veg = MIN = -16mA_ Veg = MAK = OAV [0 a cigs [Righvel nput caren Voo = WAR ez | [oi wximam put euirent | Vog WAX WS SBV TL ma | Vcc = MIN Voy | Low-level output voltage Vy = 08v Joy = 8mA 0s v Vin = 2V Vou | High-level output voltage VL = 08V 24 v | Vin = 2 Com lon = -32mA ‘Output short-circuit current*_ | Voc = 50V Vo = W =30 7130 * No more than one output should be shorted at a time and duration of the short-circuit should not exceed one second. + Altypicats values are at Veg = 5V.Ta= 25°C. Switching Characteristics over Operating Conditions TEST CONDITION ILITARY SYMBOL PARAMETER NS miu COMMERCIAL (See Test Load) MIN TYP MAX |MIN TYP MAX Cy = 50 pF | | tep Any input to Y Ry = 5600 2545 25 «40 | ns | Rg = 11k Test Load ourpuT Notes. 1 tpo ts tested witl- switch Sy closed Cy * $0 pF and measured at 1.5 V output level sv 2 tnay i measured atthe 15 V output level with Cy = 50 pF S35 open for high * The “Test Paint” is SN er impedance to"T” test and closed far igh impedance to "0" test ren by the outputs 2 tpyg i tested with Cl - 5 pF. Sy 18 open for" to high impedance test, measured under test anc observes a Fr Von-05 V output level. S; 18 closed for "0" to high impedance test measured at by instrumentation TEST: POINT You. 20 5 ¥ outa ievel se 7-22 monoitthic El memories
Application 4-Bit Wide 8:1 Bus Multiplexer ws Ae co fF oH 2° 2! a? smnoen ous BITO c— - ner - Oe - FACE “Hs 4=8 [7] oO CO re AE an za (| ort ed Im el | . Le eS) rt yt ty rit yy 240 oO [24] Cp 4 “Te CCl or a OE CO ee EP CoP en, a | SCE Cl as A pe) ee — an fe ye, ryt Ty ci Tt Ty rit Tt yt Monolithic [Ll] Memories 7-23