SN74ALS21ANSR

Overview

The SN74ALS21ANSR is a dual 4-input positive AND gate from the Texas Instruments ALS logic series, housed in a 14-pin SOIC surface-mount package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to +70°C. Key electrical characteristics include a propagation delay of 15 ns, a low-level output current capability of 20 mA, and a high-level output current of -2 mA.

Feature Summary

• Contains two independent 4-input AND gates for complex logic implementation
• Utilizes Schottky-clamped structures to ensure high-speed performance
• Provides robust low-level sink current capability for direct interface with TTL loads

Applications

• Data acquisition systems requiring logical gating
• Industrial control logic circuits
• Communication equipment signal processing

Procurement Notes

Verify the specific suffix 'ANSR' corresponds to the SOIC-14 package and tape-and-reel packaging format. Confirm RoHS compliance status through official manufacturer documentation or certified datasheets prior to integration into production designs.

Selection Notes

Select this component when designing systems requiring dual 4-input AND functionality within the ALS speed-power profile. Ensure the design accommodates the specified 4.5 V to 5.5 V supply voltage constraints and thermal requirements for the commercial temperature range.

Part Context

This device belongs to the SN74ALS21A family, representing the Advanced Low-Power Schottky (ALS) generation of logic ICs. The 'N' designation indicates the SOIC package style, while 'SR' specifies the reel packaging method used for automated surface-mount assembly processes.

Replacement Considerations

Compatible substitutes include SN74ALS21AN and SN74ALS21AP. Verify pinout compatibility and electrical specifications against original design requirements before substitution.