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74ALS688 Datasheet

  • 74ALS688

  • 8-BIT IDENTITY COMPARATORS

  • 14頁(yè)

  • TI

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SN54ALS688, SN74ALS688
8-BIT IDENTITY COMPARATORS
SDAS228A 鈥?JUNE 1982 鈥?REVISED JANUARY 1995
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Compare Two 8-Bit Words
Totem-Pole Outputs (P = Q)
鈥睞LS688
Are Identical to
鈥睞LS521
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
SN54ALS688 . . . J PACKAGE
SN74ALS688
. . .
DW OR N PACKAGE
(TOP VIEW)
description
These identity comparators perform comparisons
on two 8-bit binary or BCD words and provide
P = Q outputs. These devices have totem-pole
outputs.
The SN54ALS688 is characterized for operation
over the full military temperature range of 鈥?55擄C
to 125擄C. The SN74ALS688 is characterized for
operation from 0擄C to 70擄C.
FUNCTION TABLE
INPUTS
DATA
P, Q
P=Q
P>Q
P<Q
X
ENABLE
G
L
L
L
H
OUTPUT
P=Q
L
H
H
H
G
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
SN54ALS688 . . . FK PACKAGE
(TOP VIEW)
P1
Q1
P2
Q2
P3
3
4
5
6
7
8
2 1 20 19
18
17
16
15
P=Q
Q7
P7
Q6
P6
Q5
14
9 10 11 12 13
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
1995, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
Q3
GND
P4
Q4
P5
G
V
CC
Q0
P0
1

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