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SL74LS157 参数 Datasheet PDF下载

SL74LS157图片预览
型号: SL74LS157
PDF下载: 下载PDF文件 查看货源
内容描述: 四2输入数据选择器/多路复用器 [Quad 2-Input Data Selector/Multiplexer]
分类和应用: 复用器
文件页数/大小: 3 页 / 34 K
品牌: SLS [ SYSTEM LOGIC SEMICONDUCTOR ]
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SL74LS157
Quad 2-Input Data Selector/Multiplexer
This monolitic data selector/multiplexer contains inverters and
drivers to supply full on-chip data selection to the four output gates. A
separate strobe input is provided. A 4-bit word is selected from one of
two sources and is routed to the four outputs. The LS157 has the same
functions and pin connections as the LS257 but the latter is provided
with 3-state outputs.
Buffered Inputs and Outputs
Common Strobe/Select input for all 4 circuits
ORDERING INFORMATION
SL74LS157N Plastic
SL74LS157D SOIC
T
A
=0° to 70° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
PIN 16 =V
CC
PIN 8 = GND
Output
Enable
H
L
L
Select
X
L
H
Outputs
Y0-Y3
L
A0-A3
B0-B3
X=don’t care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
SLS
System Logic
Semiconductor