SN74ALS27ANSR

Overview

The SN74ALS27ANSR is a Texas Instruments logic gate featuring three independent 3-input positive NOR gates in a single package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports surface mount installation in an SOIC-14 package. The device exhibits a propagation delay of 15 ns, with a low-level output current capability of 400 uA and a high-level output current of -8 mA. It functions reliably across an operating temperature range from 0°C to +70°C.

Feature Summary

• Integrates three independent 3-input positive NOR logic gates within a compact integrated circuit.
• Delivers fast switching performance characterized by a 15 ns propagation delay specification.
• Provides defined output drive capabilities with specified low-level and high-level output currents.

Applications

• Digital logic circuits requiring multiple NOR gate functions
• Data processing systems utilizing ALS series logic families
• Control logic interfaces for industrial equipment

Procurement Notes

Verify the specific suffix 'ANSR' corresponds to the SOIC-14 surface-mount package and reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the 4.5 V to 5.5 V supply voltage range and standard TTL input levels. Validate thermal management requirements against the 0°C to +70°C operating temperature limits for the intended application environment.

Selection Notes

Select this component when designing systems requiring multiple 3-input NOR operations within the ALS logic family. It serves as a direct replacement for legacy DIP packages when transitioning to surface-mount technology. Consider its 15 ns speed and 5.5 V maximum rating for general-purpose digital applications. Evaluate pinout compatibility if substituting older 74LS27 variants in existing board layouts.

Part Context

This part belongs to the Texas Instruments SN74ALS27A series, representing advanced low-power Schottky logic technology. The SN74ALS27A variant offers improved speed and power dissipation characteristics compared to standard LS counterparts. The 'N' designation indicates the SOIC package style, while 'SR' specifies tape-and-reel delivery. This series is widely used in embedded systems and communication hardware requiring reliable boolean logic operations.

Replacement Considerations

SN74ALS27AN (DIP package equivalent). SN74ALS27NSR (alternative reel source). Verify pin-to-pin compatibility before substitution.