SN74AS286NSR

Overview

The SN74AS286NSR is a high-speed bipolar logic component manufactured by Texas Instruments, belonging to the AS (Advanced Schottky) series. It functions as a 9-bit parity generator and checker housed in a 14-pin SOIC surface-mount package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from 0°C to +70°C. Key electrical characteristics include a propagation delay of 4.5 ns, a low-level output current capability of 400 µA, and a high-level output current of -8 mA.

Feature Summary

• Implements 9-bit parity generation and checking logic functions
• Utilizes Advanced Schottky (AS) technology for high-speed performance
• Provides parallel data input and single parity bit output

Applications

• Digital communication systems requiring error detection
• Memory modules utilizing parity checking protocols
• Data bus integrity verification circuits

Procurement Notes

Verify the specific suffix 'NSR' corresponds to the SOIC-14 package and tape-and-reel shipping configuration. Confirm that the AS series bipolar technology requirements align with the target circuit design, particularly regarding power consumption and drive capabilities compared to CMOS alternatives. Ensure compatibility with standard 5V logic levels.

Selection Notes

Select this component when high-speed parity processing is required in a compact surface-mount form factor. The AS series offers superior speed compared to standard TTL but consumes more power than HC or HCT families. Consider the 14-pin SOIC footprint constraints and the specific need for 9-bit parallel processing versus other bit-width options.

Part Context

This part belongs to the SN74ASxx family of advanced Schottky logic devices known for fast switching speeds. Unlike the SN74ALS series which focuses on lower power, the AS series prioritizes performance. The SN74AS286 specifically addresses parity needs, distinguishing it from basic gate ICs like the SN74AS00 or buffers like the SN74AS760 found in similar packaging.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.