參數(shù)資料
型號(hào): 74ALS688
廠商: Texas Instruments, Inc.
英文描述: 8-BIT IDENTITY COMPARATORS
中文描述: 8位身分比較器
文件頁(yè)數(shù): 1/14頁(yè)
文件大?。?/td> 493K
代理商: 74ALS688
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
P = Q
DATA
P, Q
ENABLE
G
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
V
CC
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)
Q
P
G
Q
P
P
Q
G
P
V
C
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.
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