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SN54HC253 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. SN54HC253
Description  DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54HC253 Datasheet(HTML) 1 Page - Texas Instruments

   
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SN54HC253, SN74HC253
DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCLS133B – DECEMBER 1982 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
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.
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
INPUTS
OUTPUT
SELECT†
DATA
OE
OUTPUT
Y
B
A
C0
C1
C2
C3
OE
Y
X
X
X
X
X
X
H
Z
L
LL
XX
X
L
L
L
LH
XX
X
L
H
L
HX
LX
XL
L
L
HX
HX
X
L
H
H
LX
XL
XL
L
H
LX
XH
X
L
H
H
HX
XX
L
L
L
H
H
X
X
X
H
L
H
† Select inputs A and B are common to both sections.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SN54HC253 ...J OR W PACKAGE
SN74HC253 . . . 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
SN54HC253 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1OE
B
1C3
1C2
1C1
1C0
1Y
GND
VCC
2OE
A
2C3
2C2
2C1
2C0
2Y
NC – No internal connection
Copyright
© 1997, 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.


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