DM74AS286MX

Parity Generators And Checkers Overview

The DM74AS286MX is a parity generator and checker integrated circuit manufactured by Fairchild Semiconductor, belonging to the 74AS logic family. It supports 9-bit parity operations within a single functional unit. The device operates on a supply voltage ranging from 4.5 V to 5.5 V and functions within an ambient temperature range of 0°C to 70°C. It utilizes a 14-SOIC surface-mount package with a width of 3.90 mm. Output drive capabilities include high-level currents up to 15 mA and low-level currents up to 48 mA for standard outputs, while specific inputs support lower current thresholds.

Parity Generators And Checkers Feature Summary

• Implements 9-bit parity generation and checking logic functions
• Features advanced Schottky (AS) technology for high-speed operation
• Provides bidirectional data bus interface capabilities via parity control

Parity Generators And Checkers Applications

• Microprocessor system memory error detection
• Asynchronous bidirectional data bus integrity verification
• Industrial control system data transmission monitoring

Parity Generators And Checkers Procurement Notes

Verify component authenticity through authorized distributors or certified secondary market suppliers due to discontinued status. Confirm lot codes and date codes against original Fairchild specifications. Ensure storage conditions comply with moisture sensitivity level requirements prior to soldering. Validate pinout compatibility with target PCB footprints to prevent installation errors during replacement.

Parity Generators And Checkers Selection Notes

Select this component when 9-bit parity checking is required in AS-series logic designs. Compare propagation delays and output drive strengths against alternative 74AS parity ICs. Verify package dimensions match existing board layouts. Consider thermal dissipation characteristics under maximum load conditions to ensure reliable operation within specified temperature limits.

Parity Generators And Checkers Part Context

This part belongs to the Fairchild DM74AS series, representing advanced Schottky TTL logic. It serves as a specialized parity handling unit within broader digital logic families. Similar devices include the DM74AS280 for different parity configurations. The series emphasizes speed and power efficiency compared to standard LS or ALS counterparts.

Parity Generators And Checkers Replacement Considerations

Direct substitute: SN74AS286D (Texas Instruments). Verify pin-to-pin compatibility and electrical parameter alignment before integration.