74LS85 4-Bit Magnitude Comparator IC

74LS85 IC is a member of the 74XXYY IC series. The 74LS85 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The 74LS85 is a 4-Bit Magnitude Comparator which compares two 4-bit words (A, B), each word having four Parallel Inputs (A0–A3, B0–B3); A3, B3 being the most significant inputs (MSBs).

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What is a 4-bit Magnitude Comparator?
A 4-bit magnitude comparator compares two binary numbers each of four bits. It consists of eight inputs each for two four bit numbers and three outputs to generate less than, equal to and greater than between two binary numbers.
74LS85 Pinout

74LS85 Pin Configuration

Pin No
Pin Name
Description

1
B3
Data Input B3

2
I (A<B)
Cascading Input (A<B)

3
I (A=B)
Cascading Input (A=B)

4
I (A>B)
Cascading Input (A>B)

5
O (A<B)
Output pin (A<B)

6
O(A=B)
Output pin (A=B)

7
O(A>B)
Output pin (A>B)

8
GND
Ground Pin

9
B0
Data Input B0

10
A0
Data Input A0

11
B1
Data Input B1

12
A1
Data Input A1

13
A2
Data Input A2

14
B2
Data Input B2

15
A3
Data Input A3

16
VCC
Supply Voltage

74LS85 Features & Specifications

Technology Family: LS
VCC (Min): 4.75V
VCC (Max): 5.25
Bits (#): 4
Operating Voltage (Nom): 5V
The frequency at a normal voltage (Max): 35MHz
Propagation delay (Max): 35ns
IOL (Max): 16mA
IOH (Max):-0.4mA
Rating: Catalog
Operating temperature range: 0°C to 70°C
Available in 14-pin PDIP, GDIP, PDSO packages

Application

PCs and notebooks
Digital Electronics
Network equipment
Televisions

You can download this Datasheet for 74LS85 4-Bit Magnitude Comparator from the link given below:

Download Datasheet