54ac520 National Semiconductor Corporation, 54ac520 Datasheet

no-image

54ac520

Manufacturer Part Number
54ac520
Description
8-bit Identity Comparator
Manufacturer
National Semiconductor Corporation
Datasheet
© 2001 National Semiconductor Corporation
54AC520 • 54ACT520
8-Bit Identity Comparator
General Description
The ’AC/’ACT520 are expandable 8-bit comparators. They
compare two words of up to eight bits each and provide a
LOW output when the two words match bit for bit. The
expansion input I
input.
Features
n Compares two 8-bit words in 6.5 ns typ
Logic Symbols
FACT
A
B
T
O
A = B
0
0
A = B
–A
–B
Pin Names
is a trademark of Fairchild Semiconductor Corporation.
7
7
A = B
also serves as an active LOW enable
Word A Inputs
Word B Inputs
Expansion or Enable Input
Identity Output
Description
DS100234
DS100234-1
n Expandable to any word length
n 20-pin package
n Outputs source/sink 24 mA
n ’ACT520 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
54AC520: 5962-90916
54ACT520: 5962-89793
IEEE/IEC
DS100234-4
September 1998
www.national.com

Related parts for 54ac520

54ac520 Summary of contents

Page 1

... Identity Comparator General Description The ’AC/’ACT520 are expandable 8-bit comparators. They compare two words eight bits each and provide a LOW output when the two words match bit for bit. The expansion input I also serves as an active LOW enable input ...

Page 2

Connection Diagrams Pin Assignment for DIP and Flatpak Inputs HIGH Voltage Level L = LOW Voltage ...

Page 3

Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. DS100234-5 3 www.national.com ...

Page 4

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( Input Diode Current ( −0. ...

Page 5

DC Characteristics for ’AC Family Devices Symbol Parameter I Maximum Input IL Low Leakage Current I Minimum Dynamic OLD (Note 3) I Output Current OHD I Maximum Quiescent CC Supply Current I Maximum Quiescent CC Supply Current Note 2: All ...

Page 6

DC Characteristics for ’ACT Family Devices Symbol Parameter I Maximum Quiescent CC Supply Current Note 4: All outputs loaded; thresholds on input associated with output under test. Note 5: Maximum test duration 2.0 ms, one output loaded at a time. ...

Page 7

Applications Ripple Expansion Parallel Expansion 7 DS100234-6 DS100234-7 www.national.com ...

Page 8

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 20 Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 8 ...

Page 9

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

Related keywords