54AC11521 Datasheet, PDF (1/5 Pages) Texas Instruments – 8-BIT IDENTITY COMPARATORS

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54AC11521, 74AC11521
8-BIT IDENTITY COMPARATORS
• Compares Two 8-Bit Words
• Flow-Through Architecture Optimizes
PCB Layout
• Center-Pin V_CC and GND Configurations
Minimize High-Speed Switching Noise
• EPICt (Enhanced-Performance Implanted
CMOS) 1-m m Process
• 500-mA Typical Latch-Up Immunity at 125°C
• Package Options Include Plastic Small-
Outline Packages, Plastic Shrink
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
These identity comparators perform comparisons
on two 8-bit binary or BCD words. Also included
is a P = Q totem-pole output.
The 54AC11521 is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The 74AC11521 is characterized for
operation from – 40°C to 85°C.
FUNCTION TABLE
INPUTS
DATA
P, Q
ENABLE
G
OUTPUT
P=Q
P=Q
L
L
P>Q
L
H
P<Q
L
H
X
H
H
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.
SCAS022A – D2957, JULY 1987 – REVISED APRIL 1993
54AC11521 . . . J PACKAGE
74AC11521 . . . DB, DW OR N PACKAGE
(TOP VIEW)
Q1 ₁
P1 2
Q0 3
P0 4
GND 5
P=Q 6
G7 7
P7 8
Q6 9
P6 10
20 ^G
19 P2
18 Q2
17 P3
16 Q3
15 V_CC
14 P4
13 Q4
12 P5
11 Q5
54AC11521 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
P2 4
18 Q4
G5
17 P5
Q1 6
16 _Q5
P1 ⁷
15 _P6
Q0 ⁸
14 _Q6
9 10 11 12 13
logic symbol^†
G ²⁰
4
P0
2
P1
19
P2
17
P3
14
P4
12
P5
10
P6
8
P7
3
Q0
1
Q1
18
Q2
16
Q3
13
Q4
11
Q5
9
Q6
7
Q7
G1 ^COMP
0
P
7
1P = Q
0
Q
7
6
P=Q
† _{This symbol is in accordance with ANSI/IEEE Std 91-1984}
and IEC Publication 617-12.
Pins numbers shown are for the DW, J, and N packages.
Copyright © 1993, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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