54AC11253_09 Datasheet, PDF (1/7 Pages) Texas Instruments – DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

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54AC11253, 74AC11253
DUAL 1ĆOFĆ4 DATA SELECTORS/MULTIPLEXERS
WITH 3ĆSTATE OUTPUTS
SCAS041A − MAY 1988 − REVISED APRIL 1993
• Permits Multiplexing From N Lines to
One Line
• Performs Parallel-to-Serial Conversion
• Flow-Through Architecture Optimizes
PCB Layout
• Center-Pin V_CC and GND Configurations
Minimize High-Speed Switching Noise
• EPICt (Enhanced-Performance Implanted
CMOS) 1-mm Process
• Package Options Include Plastic Small-
Outline Packages, Ceramic Chip Carriers,
and Standard Plastic and Ceramic 300-mil
DIPs
description
54AC11253 . . . J PACKAGE
74AC11253 . . . D OR N PACKAGE
(TOP VIEW)
A¹
B²
1Y ³
GND ⁴
2Y ⁵
1G ⁶
2G ⁷
2C3 ⁸
16 _1C0
15 _1C1
14 _1C2
13 _1C3
12 _VCC
11 _2C0
10 _2C1
9 _2C2
54AC11253 . . . FK PACKAGE
(TOP VIEW)
Each of these data selectors/multiplexers
contains 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 four-line sections.
The three-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). The output is disabled when its strobe
is high.
The 54AC11253 is characterized for operation
over the full military temperature range of − 55°C
to 125°C. The 74AC11253 is characterized for
operation from − 40°C to 85°C.
FUNCTION TABLE
SELECT
INPUTS
BA
DATA INPUTS
C0 C1 C2 C3
OUTPUT
CONTROL
G
OUTPUT
Y
XXXXXX
H
Z
L L LXXX
L
L
L LHXXX
L
H
L HX L XX
L
L
LHXHXX
L
H
HLXXLX
L
L
H L XXHX
L
H
HHXXX L
L
L
HHXXXH
L
H
Address inputs A and B are common to both sections.
1C1
1C0
NC
A
B
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2C1
2C2
NC
2C3
2G
NC − No internal connection
logic symbol^†
1
A
2
B
0
0
1 ^G3
6
1G
16
1C0
15
1C1
14
1C2
13
1C3
7
2G
11
2C0
10
2C1
9
2C2
8
2C3
MUX
EN
0
1
2
3
3
1Y
5
2Y
† _{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.
EPIC is a trademark of 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.
Copyright  1993, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77001
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