54ACT521LMQB. National Semiconductor, 54ACT521LMQB. Datasheet

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54ACT521LMQB.

Manufacturer Part Number
54ACT521LMQB.
Description
Manufacturer
National Semiconductor
Type
Identity Comparatorr
Datasheet

Specifications of 54ACT521LMQB.

Logic Family
ACT
Technology
CMOS
High Level Output Current
-24mA
Low Level Output Current
24mA
Output Function
A=B
Quiescent Current
80uA
Mounting
Surface Mount
Pin Count
20
Polarity
Inverting
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temperature (max)
125C
Operating Temperature Classification
Military
Number Of Bits
8
Lead Free Status / RoHS Status
Not Compliant
© 1998 National Semiconductor Corporation
54AC521 • 54ACT521
8-Bit Identity Comparator
General Description
The AC/ACT521 is an expandable 8-bit comparator. It com-
pares two words of up to eight bits each and provides a LOW
output when the two words match bit for bit. The expansion
input I
Logic Symbols
FACT
is a trademark of Fairchild Semiconductor Corporation.
A = B
also serves as an active LOW enable input.
IEEE/IEC
DS100291-4
DS100291
DS100291-1
Features
n I
n Compares two 8-bit words in 6.5 ns typ
n Expandable to any word length
n Outputs source/sink 24 mA
n ACT521 has TTL-compatible inputs
n Standard microcircuit Drawing (SMD)
Connection Diagram
Pin Descriptions
A
B
T
O
54AC521: 5962-90985
54ACT521: 5962-89793
A = B
0
0
CC
A = B
–A
–B
Pin Names
7
7
reduced by 50%
for DIP and CERPACK
Pin Assignment
Pin Assignment
Word A Inputs
Word B Inputs
Expansion or Enable Input
Identity Output
for LCC
Description
DS100291-2
DS100291-3
September 1998
www.national.com

Related parts for 54ACT521LMQB.

54ACT521LMQB. Summary of contents

Page 1

... I also serves as an active LOW enable input Logic Symbols IEEE/IEC DS100291-4 FACT ™ trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100291 Features n I reduced by 50 Compares two 8-bit words in 6.5 ns typ n Expandable to any word length n Outputs source/sink 24 mA ...

Page 2

Truth Table H = HIGH Voltage Level L = LOW Voltage Level = Note etc Logic Diagram Please note that this diagram ...

Page 3

... 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. 0. Input Voltage (V ) −0. Output Diode Current ( −0. 0. Output Voltage (V ) −0. Output Source or Sink Current ( Ground Current ...

Page 4

DC Electical Characteristics for ACT Symbol Parameter V Minimum High Level IH Input Voltage V Maximum Low Level IL Input Voltage V Minimum High Level OH Output Voltage V Maximum Low Level OL Output Voltage Maximum Input I IN Leakage ...

Page 5

AC Electrical Characteristics for ACT Symbol Parameter t Propagation Delay PLH Propagation Delay PHL Propagation Delay PLH I ...

Page 6

Applications www.national.com Ripple Expansion DS100291-6 Parallel Expansion DS100291-7 6 ...

Page 7

7 ...

Page 8

Physical Dimensions inches (millimeters) unless otherwise noted www.national.com 20-Lead Ceramic Leadless Chip Carrier Package Number E20A 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Ceramic Dual-in-line J20A 20-Lead Cerpack Package Number W20A 9 www.national.com ...

Page 10

... National Semiconductor Asia Pacific Customer Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Fax: 65-2504466 Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Tel: +49 (0) 1 80-534 16 80 National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 ...

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