Specification	SN74AS280NSR

Current - Output High, Low [custom]	20 mA
Current - Output High, Low [custom]	2 mA
Logic Type	Parity Generator/Checker
Mounting Type	Surface Mount
Number of Circuits	9-Bit
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	14-SOIC
Package / Case [x]	0.209 "
Package / Case [y]	5.3 mm
Supplier Device Package	14-SO
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74AS280 Series

9-Bit Parity Generators/Checkers

Part	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case [x]	Package / Case	Package / Case [y]	Mounting Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Logic Type	Operating Temperature [Max]	Number of Circuits
Texas Instruments SN74AS280NSR	14-SO	4.5 V	5.5 V	0.209 "	14-SOIC	5.3 mm	Surface Mount	20 mA	2 mA	Parity Generator/Checker	70 °C	9-Bit
Texas Instruments SN74AS280DE4		4.5 V	5.5 V	0.154 in	14-SOIC	3.9 mm	Surface Mount	20 mA	2 mA	Parity Generator/Checker	70 °C	9-Bit
Texas Instruments SN74AS280D		4.5 V	5.5 V	0.154 in	14-SOIC	3.9 mm	Surface Mount	20 mA	2 mA	Parity Generator/Checker	70 °C	9-Bit
Texas Instruments SN74AS280N		4.5 V	5.5 V	0.3 "	14-DIP	7.62 mm	Through Hole	20 mA	2 mA	Parity Generator/Checker	70 °C	9-Bit

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.18
	Digi-Reel®	1	$ 4.18
	Tape & Reel (TR)	2000	$ 2.10
Texas Instruments	LARGE T&R	1	$ 3.63
		100	$ 3.18
		250	$ 2.23
		1000	$ 1.80

Description

General part information

SN74AS280 Series

These universal 9-bit parity generators/checkers utilize advanced Schottky high-performance

circuitry and feature odd (ODD) and even (EVEN) outputs to facilitate operation of either odd- or even-parity applications. The word-length capability is easily expanded by cascading.

These devices can be used to upgrade the performance of most systems utilizing the SN74ALS180 and SN74AS180 parity generators/checkers. Although the SN74ALS280 and SN74AS280 are implemented without expander inputs, the corresponding function is provided by the availability of an input (I) at terminal 4 and the absence of any internal connection at terminal 3. This permits the SN74ALS280 and SN74AS280 to be substituted for the SN74ALS180 and SN74AS180 in existing designs to produce an identical function even if the devices are mixed with existing SN74ALS180 and SN74AS180 devices.

Documents

Technical documentation and resources

9-Bit Parity Generators/Checkers datasheet (Rev. C)

Data sheet