MM74C85J National Semiconductor, MM74C85J Datasheet

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MM74C85J

Manufacturer Part Number
MM74C85J
Description
4-Bit Magnitude Comparator
Manufacturer
National Semiconductor
Datasheet
C 1995 National Semiconductor Corporation
MM54C85 MM74C85 4-Bit Magnitude Comparator
General Description
The MM54C85 MM74C85 is a four-bit magnitude compara-
tor which will perform comparison of straight binary or BCD
codes The circuit consists of eight comparing inputs (A0
A1 A2 A3 B0 B1 B2 B3) three cascading inputs (A
A
A
and determines whether they are ‘‘greater than ’’ ‘‘less
than ’’ or ‘‘equal to’’ each other by a high level on the appro-
priate output For words greater than four-bits units can be
cascaded by connecting the outputs (A
A
(A
addition the least significant stage must have a high level
voltage (V
voltage (V
Logic Diagram
k
e
e
l
B and A
B) This device compares two four-bit words (A and B)
B) of the least significant stage to the cascade inputs
B A
IN(0)
IN(1)
k
B and A
e
) applied to A
) applied to the A
B) and three outputs (A
e
B) of the next-significant stage In
l
TL F 5886
B and A
e
B input and low level
k
l
l
B inputs
B A
B A
k
k
B and
B and
l
B
Features
Y
Y
Y
Y
Y
Y
Y
TTL compatibility
Wide supply voltage range
Guaranteed noise margin
High noise immunity
Low power
Expandable to ‘N’ stages
Applicable to binary or BCD
Low power pinout 54L85 74L85
RRD-B30M105 Printed in U S A
September 1989
0 4 V
3 0V to 15V
fan out of 2
driving 74L
TL F 5886 – 1
CC
(typ )
1 0V

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MM74C85J Summary of contents

Page 1

... A B input and low level e IN(1) voltage (V ) applied and IN(0) Logic Diagram C 1995 National Semiconductor Corporation TL F 5886 Features Wide supply voltage range Y Guaranteed noise margin Y High noise immunity Low power Y ...

Page 2

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Voltage at Any Pin Operating Temperature Range MM54C85 MM74C85 Storage Temperature Range DC Electrical Characteristics Symbol Parameter CMOS TO CMOS V Logical ‘‘1’’ Input Voltage ...

Page 3

Typical Applications Four Digit Comparator Truth Table Comparing Inputs ...

Page 4

... Physical Dimensions inches (millimeters) Order Number MM54C85J or MM74C85J Order Number MM54C85N or MM74C85N LIFE SUPPORT POLICY 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 OF NATIONAL SEMICONDUCTOR CORPORATION As used herein ...

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