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参数资料
| 型号： | SN54F253FK |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | F/FAST SERIES, DUAL 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 1/8页 |
| 文件大小： | 249K |
| 代理商： | SN54F253FK |
SN54F253, SN74F253
DUAL 1OF4 DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDFS064A D2032, MARCH 1987 REVISED OCTOBER 1993
Copyright
1993, Texas Instruments Incorporated
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
3-State Versions of SN54F153 and
SN74F153
Permits Multiplexing From N Lines to
One Line
Performs Parallel-to-Serial Conversion
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
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.
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.
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.
FUNCTION TABLE
INPUTS
STROBE
OUTPUT
SELECT
DATA
STROBE
G
OUTPUT
Y
B
A
C0
C1
C2
C3
G
Y
X
H
Z
L
LL
XX
X
L
LH
XX
X
L
H
L
HX
LX
X
L
HX
X
L
H
LX
XL
X
L
H
LX
XH
X
L
H
HX
XX
L
H
X
H
L
H
Select inputs A and B are common to both sections.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1G
B
1C3
1C2
1C1
1C0
1Y
GND
VCC
2G
A
2C3
2C2
2C1
2C0
2Y
SN54F253 ...J PACKAGE
SN74F253 ...D OR N PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
A
2C3
NC
2C2
2C1
1C3
1C2
NC
1C1
1C0
SN54F253 . . . FK PACKAGE
(TOP VIEW)
B
1G
NC
2Y
2C0
2G
1Y
GND
NC
NC No internal connection
V
CC
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.
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