Product details

Number of channels (#) 9 Technology Family AS Input type Bipolar Output type Push-Pull Features Very high speed (tpd 5-10ns)
Number of channels (#) 9 Technology Family AS Input type Bipolar Output type Push-Pull Features Very high speed (tpd 5-10ns)
PDIP (N) 14 181 mm² 19.3 x 9.4 SOP (NS) 14 80 mm² 10.2 x 7.8
  • Generate Either Odd or Even Parity for Nine Data Lines
  • Cascadable for n-Bit Parity
  • Can Be Used to Upgrade Existing Systems Using MSI Parity Circuits
  • Package Options Include Plastic Small-Outline (D) Packages and Standard Plastic (N) 300-mil DIPs
  • Generate Either Odd or Even Parity for Nine Data Lines
  • Cascadable for n-Bit Parity
  • Can Be Used to Upgrade Existing Systems Using MSI Parity Circuits
  • Package Options Include Plastic Small-Outline (D) Packages and Standard Plastic (N) 300-mil DIPs

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.

All SN74AS280 inputs are buffered to lower the drive requirements.

The SN74ALS280 and SN74AS280 are characterized for operation from 0°C to 70°C.

 

 

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.

All SN74AS280 inputs are buffered to lower the drive requirements.

The SN74ALS280 and SN74AS280 are characterized for operation from 0°C to 70°C.

 

 

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Technical documentation

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Type Title Date
* Data sheet 9-Bit Parity Generators/Checkers datasheet (Rev. C) 01 Dec 1994
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
More literature Logic Cross-Reference (Rev. A) 07 Oct 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Advanced Schottky Load Management 01 Feb 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996
Application note Advanced Schottky (ALS and AS) Logic Families 01 Aug 1995

Design & development

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Evaluation board

14-24-LOGIC-EVM — Generic Logic EVM Supporting 14 through 24 Pin PW, DB, D, DW, NS, P, N, and DGV Packages

This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, P, N, or DGV package in a 14 to 24 pin count.
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PDIP (N) 14 View options
SO (NS) 14 View options

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