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SL74LS157 数据表(PDF) 1 Page - System Logic Semiconductor

部件名 SL74LS157
功能描述  Quad 2-Input Data Selector/Multiplexer
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制造商  SLS [System Logic Semiconductor]
网页  http://www.slsemicon.co.kr/e_index.htm
标志 SLS - System Logic Semiconductor

SL74LS157 数据表(HTML) 1 Page - System Logic Semiconductor

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SL74LS157
System Logic
Semiconductor
SLS
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 o utput 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
TA =0
° to 70° C for all
packages
FUNCTION TABLE
Inputs
Outputs
Output
Enable
Select
Y0-Y3
H
X
L
L
L
A0-A3
L
H
B0-B3
X=don’t care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
LOGIC DIAGRAM
PIN 16 =VCC
PIN 8 = GND
PIN ASSIGNMENT


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