SN74AS08DR

Overview

The SN74AS08DR is a quadruple 2-input positive-AND gate from the Texas Instruments AS logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features a SOIC-14 surface-mount package. Key electrical parameters include a propagation delay of 5.5 ns, a low-level output current of 20 mA, and a high-level output current of -2 mA. The device supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Provides four independent 2-input AND logic functions in a single integrated circuit
• Delivers high-speed performance with a 5.5 ns propagation delay characteristic
• Offers robust drive capability with a 20 mA low-level output current

Applications

• High-speed digital signal processing systems
• Memory address decoding circuits
• Control logic for industrial automation equipment

Procurement Notes

Verify the specific suffix 'DR' corresponds to the SOIC-14 tape-and-reel packaging configuration required for automated assembly processes. Confirm that the AS logic family specifications align with the target system's speed and power constraints before finalizing procurement orders.

Selection Notes

Select this component when faster switching speeds than standard LS or ALS families are required but lower power consumption than F families is not the primary constraint. Ensure the 4.5 V to 5.5 V supply voltage range matches the system power rails and that the SOIC-14 footprint fits the PCB layout.

Part Context

This part belongs to the SN74AS00 series, representing Advanced Schottky TTL technology. It offers improved speed over standard 74LS08 devices while maintaining compatibility with traditional TTL logic levels. The DR suffix indicates a specific surface-mount package variant manufactured by Texas Instruments.

Replacement Considerations

Direct pin-compatible alternatives within the same manufacturer portfolio include SN74ALS08DR and SN74F08DR. Verify that the replacement's propagation delay and output drive currents meet the original design requirements.