Texas Instruments SN74F253D, SN74F253DR, SN74F253N Datasheet
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCT OBER 1993
Copyright 1993, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
• 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
SELECT DATA
STROBE
OUTPUT
B A C0 C1 C2 C3
G
Y
X X X X X X H Z
L LLXXX L L
LLHXXX L H
LHXLXX L L
LHXHXX L H
HLXXLX L L
HLXXHX L H
HHXXXL L L
HHXXXH 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
V
CC
2G
A
2C3
2C2
2C1
2C0
2Y
SN54F253 ...J PACKAGE
SN74F253 ...D OR N PACKAGE
(TOP VIEW)
3212019
910111213
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)
B1GNC
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.
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCT OBER 1993
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
G
MUX
0
3
0
14
A
1
2
B
EN
1
15
1Y
7
0
6
1C0
1
5
1C1
2
4
1C2
3
3
1C3
10
2C0
11
2C1
12
2C2
13
2C3
2Y
9
1G
2G
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCT OBER 1993
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
Data 2
Select
Data 1
2G
2C3
2C2
2C1
2C0
A
B
1C3
1C2
1C1
1C0
1G
2Y
1Y
1
6
5
4
3
2
14
10
11
12
13
15
7
9
Pin numbers shown are for the D, J, and N packages.
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