74LS283 4-bit Binary Full Add with Fast Carry

The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS283 full adders perform the addition of two 4-bit binary words. The sum (2) outputs are provided for each bit and the resultant carry (C4) is obtained from the fourth bit.

74LS283 Features

• Full Added Performs Addition of Two 4-bit Binary Numbers
• Full Carry Look Ahead across the 4-bits
• Fast Add Times
• Operating Temperature up to 70°C
• Standard TTL Switching Voltages

74LS283 Specifications

Supply Voltage	4.75 – 5.25Vdc
Maximum Clock Frequency	40Mhz
Power Dissipation	2mW/gate @100kHz
Minimum Output Current	8mA
Propagation Delay	10nS
Fan Out (TTL Loads)	20

74LS283 Pinout Diagram

74LS283 Pin Description

Pin No	Pin Name	Description
1	Σ2	Sum Output
2	B2	Operand B Input
3	A2	Operand A Input
4	Σ1	Sum Output
5	A1	Operand A Input
6	B1	Operand B Input
7	C0	Carry Input
8	GND	Ground
9	C4	Resultant Carry Output
10	Σ4	Sum Output
11	B4	Operand B Input
12	A4	Operand A Input
13	Σ3	Sum Output
14	A3	Operand A Input
15	B3	Operand B Input
16	VCC	Positive Supply

Applications

• A Full Adder’s circuit can be used as a part of many other larger circuits like Ripple Carry Adder, which adds n-bits simultaneously.
• The dedicated multiplication circuit uses Full Adder’s circuit to perform Carryout Multiplication.
• Full Adders are used in ALU- Arithmetic Logic Unit.

74LS283 Alternative Equivalent

Download 74LS283 4-bit Binary Full Add with Fast Carry Datasheet from the link given below.