Texas Instruments SN74ALS688DW Manual

Texas Instruments Ikke kategoriseret SN74ALS688DW

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SN54ALS688, SN74ALS688
8-BIT IDENTITY COMPARATORS
SDAS228A – JUNE 1982 – REVISED JANUARY 1995
Copyright 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
•Compare Two 8-Bit Words
•Totem-Pole Outputs (P = Q)
•′ALS688 Are Identical to ALS521′
•Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
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 –55 C°
to 125°C. The SN74ALS688 is characterized for
operation from 0°C to 70 C.°
FUNCTION TABLE
INPUTS
OUTPUT
DATA
P, Q
ENABLE
G
OUTPUT
P = Q
P = Q L L
P > Q L H
P < Q L H
X H H
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
G
P0
Q0
P1
Q1
P2
Q2
P3
Q3
GND
VCC
P = Q
Q7
P7
Q6
P6
Q5
P5
Q4
P4
SN54ALS688 . . . J PACKAGE
SN74ALS688 ...DW OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
Q7
P7
Q6
P6
Q5
P1
Q1
P2
Q2
P3
SN54ALS688 . . . FK PACKAGE
(TOP VIEW)
Q0
P0
G
Q4
P5 P = Q
Q3
GND
P4 V
CC
PRODUCTION DATA information is current as of publication date.
Products conform to specications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
SN54ALS688, SN74ALS688
8-BIT IDENTITY COMPARATORS
SDAS228A – JUNE 1982 – REVISED JANUARY 1995
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol†
COMP
G1
1
0
2
P0
4
P1 6
P2 8
P3 11
P4
13
P5 15
P6
7
17
P7
0
3
Q0
5
Q1 7
Q2 9
Q3 12
Q4
14
Q5 16
Q6
7
18
Q7
19
1P=Q
G
P
Q
P = Q
†This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Produkt Specifikationer

Mærke: Texas Instruments
Kategori: Ikke kategoriseret
Model: SN74ALS688DW

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