鈥?/div>
Compares Two 8-Bit Words
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
SN54F521 . . . J PACKAGE
SN74F521 . . . DW OR N PACKAGE
(TOP VIEW)
description
These identity comparators perform comparisons
on two 8-bit binary or BCD words. They provide
P = Q outputs.
The SN54F521 is characterized for operation over
the full military temperature range of 鈥?55擄C to
125擄C. The SN74F521 is characterized for
operation from 0擄C to 70擄C.
FUNCTION TABLE
INPUTS
P, Q
P=Q
P
鈮?/div>
Q
X
OE
L
X
H
OUTPUT
P=Q
L
H
H
OE
P0
Q0
P1
Q1
P2
Q2
P3
Q3
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
P=Q
Q7
P7
Q6
P6
Q5
P5
Q4
P4
SN54F521 . . . FK PACKAGE
(TOP VIEW)
logic symbol
鈥?/div>
1
OE
P0
P1
P2
P3
P4
P5
P6
P7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
2
4
6
8
11
13
15
17
3
5
7
9
12
14
16
18
7
Q
7
0
1P = Q
19
P
0
COMP
P1
Q1
P2
Q2
P3
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
P=Q
Q7
P7
Q6
P6
Q5
P=Q
鈥?This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
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
漏
1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
Q3
GND
P4
Q4
P5
Q0
P0
OE
V
CC
2鈥?
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