DM74AS286M

Parity Generators And Checkers Overview

The DM74AS286M is a parity generator and checker integrated circuit manufactured by onsemi (formerly Fairchild Semiconductor). It operates within the 74AS logic series and supports 9-bit parity generation or checking. The device is housed in a 14-SOIC surface-mount package with a width of 3.90mm. It functions at a supply voltage range of 4.5 V to 5.5 V and maintains an operating temperature range of 0°C to 70°C. Electrical characteristics include a high-level output current of 15mA and a low-level output current of 48mA, alongside a high-impedance state with currents of 2mA and 20mA respectively.

Parity Generators And Checkers Feature Summary

• Implements 9-bit parity generation and checking functions for data integrity verification.

Parity Generators And Checkers Applications

• Data bus error detection systems
• Memory interface circuits requiring parity validation

Parity Generators And Checkers Procurement Notes

This component is obsolete and no longer manufactured. Verification of availability requires checking distributor stock for remaining inventory or identifying direct substitutes. Confirm that replacement parts match the original pinout and electrical specifications to ensure compatibility with existing designs.

Parity Generators And Checkers Selection Notes

Designers should consider the discontinued status when selecting this part. Evaluate alternative sources for legacy stock or transition to modern equivalents from other manufacturers. Ensure the selected substitute supports the required 9-bit parity function and 14-SOIC packaging constraints.

Parity Generators And Checkers Part Context

The DM74AS286M belongs to the 74AS (Advanced Schottky) logic family, known for high-speed performance. It serves as a specialized logic IC for parity operations, distinct from standard gates or flip-flops. The device was produced by Fairchild Semiconductor before its acquisition by onsemi, which continues to list it in historical catalogs.

Parity Generators And Checkers Replacement Considerations

The SN74AS286D from Texas Instruments is documented as a direct substitute. Verify functional equivalence and pin compatibility before implementation.