74LS85 4-Bit Magnitude Comparator IC – Datasheet

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).

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:

See Also: 74LS14 Schmitt Trigger Hex Inverter IC | 74LS25 Dual 4 – Input NOR Gate IC with Strobe | 74LS20 Dual 4 – Input NAND IC