N74F280BD

Number of Circuits : 1
Number of Bits : 9
Logic Family : F
High Level Output Current : - 1 mA
Low Level Output Current : 20 mA
Propagation Delay Time : 10 ns
Operating Supply Voltage : 5 V
Maximum Operating Temperature : + 70 C
Minimum Operating Temperature : 0 C
Packaging : Tube
Package / Case : SO-14


Features:

`High-impedance NPN base inputs for reduced loading  (20A in Low and High states)
`Buffered inputs - one normalized loa
`Word length easily expanded by cascading
`Industrial temperature range available (-40to +85)

Pinout




Specifications

SYMBOL	PARAMETER		RATING	UNIT
VCC	Supply voltage		0.5 to +7.0	V
VIN	Input voltage		0.5 to +7.0	V
IIN	Input current		30 to +5	mA
VOUT	Voltage applied to output in High output state		0.5 to VCC	V
IOUT	Current applied to output in Low output state		40	mA
Tamb	Operating free-air temperature range	Commercial range	0 to +70	°C
		Industrial range	-40 to +85	°C
Tstg	Storage temperature range		65 to +150	°C

Description

The 74F280B is a 9-bit Parity Generator or Checker commonly used to detect errors in high speed data transmission or data retrieval systems. Both Even (_E) and Odd (_O ) parity outputs are available for generating or checking even or odd parity on up to 9 bits.

The Even (_E) parity output of 74F280B is High when an even number of Data inputs (I₀- I₈) are High. The Odd (o) parity output is High when an odd number of Data inputs are High.

Expansion to larger word sizes is accomplished by tying the Even (_E) outputs of up to nine parallel devices to the data inputs of the final stage. This expansion scheme of 74F280B allows an 81-bit data word to be checked in less than 20ns.