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4ALS520

4ALS520首页预览图
型号: 4ALS520
PDF文件:
  • 4ALS520 PDF文件
  • 4ALS520 PDF在线浏览
功能描述: 8-BIT IDENTITY COMPARATORS
PDF文件大小: 138.07 Kbytes
PDF页数: 共9页
制造商: TI[Texas Instruments]
制造商LOGO: TI[Texas Instruments] LOGO
制造商网址: http://www.ti.com
捡单宝4ALS520
PDF页面索引
120%
SN54ALS520, SN74ALS518, SN74ALS520, SN74ALS521
8-BIT IDENTITY COMPARATORS
SDAS224B – JUNE 1982 – REVISED NOVEMBER 1995
Copyright 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Compare Two 8-Bit Words
Choice of Totem-Pole or Open-Collector
Outputs
SN74ALS518 and ALS520 Have 20-k
Pullup Resistors on Q Inputs
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
TYPE
INPUT
PULLUP
OUTPUT FUNCTION
AND
TYPE
PULLUP
RESISTOR
AND
CONFIGURATION
SN74ALS518 Yes P = Q open collector
ALS520 Yes P = Q totem pole
SN74ALS521
No P = Q totem pole
SN74ALS521 is identical to ALS688.
description
These identity comparators perform comparisons
on two 8-bit binary or BCD words. The
SN74ALS518 provides P = Q outputs, while the
ALS520 and SN74ALS521 provide P = Q
outputs. The SN74ALS518 has an open-collector
output. The SN74ALS518 and ALS520 feature
20-k pullup resistors on the Q inputs for analog
or switch data.
The SN54ALS520 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ALS518, SN74ALS520, and
SN74ALS521 are characterized for operation
from 0°C to 70°C.
FUNCTION TABLE
INPUTS
OUTPUTS
DATA
P, Q
ENABLE
G
P = Q
P = Q
P = Q L H L
P > Q LLH
P < Q LLH
XHLH
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/P = Q
Q7
P7
Q6
P6
Q5
P5
Q4
P4
SN54ALS520 ...J PACKAGE
SN74ALS518, SN74ALS520,
SN74ALS521 ...DW OR N PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
Q7
P7
Q6
P6
Q5
P1
Q1
P2
Q2
P3
SN54ALS520 . . . FK PACKAGE
(TOP VIEW)
Q0
P0
G
Q4
P5 P = Q
Q3
GND
P4
V
CC
P = Q for SN74ALS518
P = Q
for ALS520 and SN74ALS521
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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