54AC521LMQB. National Semiconductor, 54AC521LMQB. Datasheet

no-image

54AC521LMQB.

Manufacturer Part Number
54AC521LMQB.
Description
Manufacturer
National Semiconductor
Type
Identity Comparatorr
Datasheet

Specifications of 54AC521LMQB.

Logic Family
AC
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)
2.5/3.3/5V
Operating Supply Voltage (max)
6V
Operating Supply Voltage (min)
2V
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 54AC521LMQB.

54AC521LMQB. 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 ...

Related keywords