MM54HC151/MM74HC1518-ChannelDigitalMultiplexer
November 1995
MM54HC151/MM74HC151 8-Channel
Digital Multiplexer
General Description
This high speed Digital multiplexer utilizes advanced silicon-All inputs are protected from damage due to static dis-
gate CMOS technology. Along with the high noise immunitycharge by internal diode clamps to VCC and ground.
and low power dissipation of standard CMOS integrated cir-
cuits, it possesses the ability to drive 10 LS-TTL loads. TheFeatures
MM54HC151/MM74HC151 selects one of the 8 data sourc-YTypicalpropagationdelay
es, depending on the address presented on the A, B, and C
data select to output Y: 26 ns
inputs. It features both true (Y) and complement (W) out-
YWideoperatingsupplyvoltagerange:2?6V
puts. The STROBE input must be at a low logic level to
YLowinputcurrent:1mAmaximum
enable this multiplexer. A high logic level at the STROBE
forces the W output high and the Y output low.YLow quiescent supply current: 80 mA maximum (74HC)
YHighoutputdrivecurrent:4mAminimum
The 54HC/74HC logic family is functionally as well as pin-
out compatible with the standard 54LS/74LS logic family.
Connection and Logic DiagramsTruth Table
Dual-In-Line Package
InputsOutputs
Strobe
Select
SYW
CBA
XXXHLH
LLLLD0D0
LLHLD1D1
LHLLD2D2
LHHLD3D3
HLLLD4D4
HLHLD5D5
HHLLD6D6
HHHLD7D7
He High Level, Le Low Level, Xe Don't Care
D0, D1...D7e the level of the respective D input
TL/F/5313?1
Top View
Order Number MM54HC151 or MM74HC151
TL/F/5313?2
C1995NationalSemiconductorCorporationTL/F/5313RRD-B30M115/PrintedinU.S.A.
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ACEC
