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SN54ALS157A PDF预览

SN54ALS157A

更新时间: 2024-11-08 23:06:11
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德州仪器 - TI 复用器
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18页 554K
描述
QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SN54ALS157A 数据手册

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SN54ALS157A, SN54ALS158  
SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158  
QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS  
SDAS081C – APRIL 1982 – REVISED DECEMBER 1994  
SN54ALS157A, SN54ALS158 . . . J PACKAGE  
SN74ALS157A, SN74ALS158,  
SN74AS157, SN74AS158 . . . D OR N PACKAGE  
Buffered Inputs and Outputs  
Package Options Include Plastic  
Small-Outline (D) Packages, Ceramic Chip  
Carriers (FK), and Standard Plastic (N) and  
Ceramic (J) 300-mil DIPs  
(TOP VIEW)  
V
G
A/B  
1A  
1B  
1Y  
2A  
2B  
2Y  
GND  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
CC  
description  
4A  
4B  
4Y  
3A  
3B  
3Y  
These data selectors/multiplexers contain  
inverters and drivers to supply full data selection  
to the four output gates. A separate strobe (G)  
input is provided. A 4-bit word is selected from one  
of two sources and is routed to the four outputs.  
The ALS157A and SN74AS157 present true  
data. The ALS158 and SN74AS158 present  
inverted data to minimize propagation delay time.  
SN54ALS157A, SN54ALS158 . . . FK PACKAGE  
(TOP VIEW)  
The SN54ALS157A and SN54ALS158 are  
characterized for operation over the full military  
temperature range of 55°C to 125°C. The  
SN74ALS157A, SN74ALS158, SN74AS157, and  
SN74AS158 are characterized for operation from  
0°C to 70°C.  
3
2
1
20 19  
18  
4A  
4B  
NC  
4Y  
3A  
1B  
1Y  
NC  
2A  
2B  
4
5
6
7
8
17  
16  
15  
14  
9 10 11 12 13  
NC – No internal connection  
FUNCTION TABLE  
OUTPUT Y  
ALS157A ALS158  
SN74AS157 SN74AS158  
INPUTS  
DATA  
G
A/B  
A
X
L
B
X
X
X
L
H
L
L
L
L
X
L
L
L
H
H
L
L
H
X
X
H
L
H
H
H
L
H
H
Copyright 1994, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

SN54ALS157A 替代型号

型号 品牌 替代类型 描述 数据表
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