SN54HC253 Datasheet, PDF (1/8 Pages) Texas Instruments – DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

SN54HC253, SN74HC253
DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCLS133B – DECEMBER 1982 – REVISED MAY 1997
D 3-State Version of ’HC153
D High-Current Inverting Outputs Drive up to
15 LSTTL Loads
D Permit Multiplexing from n Lines to One
Line
D Perform Parallel-to-Serial Conversion
D Package Options Include Plastic
Small-Outline (D) and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
SN54HC253 . . . J OR W PACKAGE
SN74HC253 . . . D OR N PACKAGE
(TOP VIEW)
1OE 1
B2
1C3 3
1C2 4
1C1 5
1C0 6
1Y 7
GND 8
16 V_CC
15 2OE
14 A
13 2C3
12 2C2
11 2C1
10 2C0
9 2Y
description
Each of 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 the
high-impedance state), the low impedance of the
single enabled output drives the bus line to a high
or low logic level. Each output has its own
output-enable (OE) input. The outputs are
disabled when their respective OE is high.
SN54HC253 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
1C3 4
18 A
1C2 5
17 2C3
NC 6
16 NC
1C1 7
15 2C2
1C0 8
14 _2C1
9 10 11 12 13
NC – No internal connection
The SN54HC253 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74HC253 is characterized for operation from –40°C to 85 °C.
FUNCTION TABLE
SELECT†
B
A
INPUTS
DATA
C0
C1
C2
C3
OE
X
X
X
X
X
X
H
L
L
L
X
X
X
L
L
L
H
X
X
X
L
L
H
X
L
X
X
L
L
H
X
H
X
X
L
H
L
X
X
L
X
L
H
L
X
X
H
X
L
H
H
X
X
X
L
L
H
H
X
X
X
H
L
† _{Select inputs A and B are common to both sections.}
OUTPUT
Y
Z
L
H
L
H
L
H
L
H
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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Copyright © 1997, Texas Instruments Incorporated
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