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SN54F253_13

更新时间： 2024-11-22 02:58:47
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德州仪器 - TI 输出元件
页数 文件大小 规格书
7页 100K
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DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

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SN54F253, SN74F253  
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS  
WITH 3-STATE OUTPUTS  
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993  
SN54F253 . . . J PACKAGE  
SN74F253 . . . D OR N PACKAGE  
(TOP VIEW)  
• 3-State Versions of SN54F153 and  
SN74F153  
• Permits Multiplexing From N Lines to  
One Line  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
1G  
B
V
CC  
2G  
• Performs Parallel-to-Serial Conversion  
1C3  
1C2  
1C1  
1C0  
1Y  
A
• Package Options Include Plastic  
Small-Outline Packages, Ceramic Chip  
Carriers, and Standard Plastic and Ceramic  
300-mil DIPs  
2C3  
2C2  
2C1  
2C0  
2Y  
description  
GND  
These data selectors/multiplexers contain  
inverters and drivers to supply full binary decoding  
data selection to the AND-OR gates. Separate  
output-control inputs are provided for each of the  
two 4-line sections.  
SN54F253 . . . FK PACKAGE  
(TOP VIEW)  
The 3-state outputs can interface with and drive  
data lines of bus-organized systems. With all but  
one of the common outputs disabled (at a  
high-impedance state), the low impedance of the  
single enabled output will drive the bus line to a  
high or low logic level. Each output has its own  
strobe (G) inputs. The output is disabled when its  
strobe is high.  
3
2
1
20 19  
18  
A
1C3  
1C2  
NC  
4
5
6
7
8
2C3  
NC  
2C2  
2C1  
17  
16  
15  
14  
1C1  
1C0  
9 10 11 12 13  
The SN54F253 is characterized for operation over  
the full military temperature range of –55°C to  
125°C. The SN74F253 is characterized for  
operation from 0°C to 70°C.  
NC – No internal connection  
FUNCTION TABLE  
INPUTS  
STROBE  
OUTPUT  
Y
SELECT  
DATA  
C1  
G
B
A
X
L
C0  
C2  
X
X
X
X
X
L
C3  
X
X
X
X
X
X
X
L
X
L
X
L
X
X
X
L
H
L
L
L
L
L
L
L
L
Z
L
L
L
H
X
X
X
X
X
X
H
L
L
H
H
L
L
H
X
X
X
X
H
L
H
H
H
H
L
H
X
X
H
L
H
H
H
H
Select inputs A and B are common to both sections.  
Copyright 1993, 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.  
2–1  
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567

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