74LS280 9-Bit Even/Odd Parity Generator/Checker IC | Datasheet

The 74LS280 IC is a Universal 9-Bit Parity Generator /Checker. It features odd/ even outputs to facilitate either odd or even parity. By cascading, the word length is easily expanded. The 74LS280 IC output always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The IC 74LS280 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.

What is an Even/Odd Parity Generator/Checker?

A parity generator is a combinational logic circuit that generates the parity bit in the transmitter. On the other hand, a circuit that checks the parity in the receiver is called a parity checker. A combined circuit or devices of parity generators and parity checkers are commonly used in digital systems to detect the single-bit errors in the transmitted data word. The sum of the data bits and parity bits can be even or odd. In even parity, the added parity bit will make the total number of 1s an even amount whereas in odd parity the added parity bit will make the total number of 1s odd amount.

74LS280 Pinout

74LS280 Pin Configuration

Pin No	Pin name	Description
1	G	Input data Line G
2	H	Input data Line H
3	NC	Not Used
4	I	Input data Line I
5	Σ Even	Even parity sum output
6	Σ Odd	Odd parity sum output
7	GND	Ground Pin
8	A	Input Data Line A
9	B	Input Data Line B
10	C	Input Data Line C
11	D	Input Data Line D
12	E	Input Data Line E
13	F	Input Data Line F
14	Vcc	Chip supply voltage

74LS280 Features & Specifications

• Function: Parity
• Bits (#): 2
• Technology Family: LS
• VCC (Min): 4.75V
• VCC (Max): 5.25V
• Input type: TTL
• Output type: CMOS
• Useful for Upgrading Existing Systems using MSI Parity Circuits
• Fast Propagation Speeds
• Low Power Dissipation: 80mW
• Generates Either Odd or Even Parity for Nine Data Lines
• Cascadable for n-bits

Applications

• Usually used to detect errors in transmitted data caused by noise or other disturbances.

You can download this Datasheet for 74LS280 9-Bit Even/Odd Parity Generator/Checker IC from the link given below:

See Also: 74LS159 4 to 16 Decoder Demultiplexer | 74LS151 8 To 1 Line Selector Multiplexer IC – Datasheet | 74LS132 Quad 2-Input Schmitt trigger NAND Gate IC – Datasheet