SN74ALS27AN

Overview

The SN74ALS27AN is a single-function logic gate manufactured by Texas Instruments, belonging to the ALS series. It contains three independent 3-input positive NOR gates housed in a 14-pin PDIP package for through-hole mounting. 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 15 ns, a low-level output current capability of 8 mA, and a high-level output current of -400 uA.

Feature Summary

• Integrates three independent 3-input positive NOR logic functions within a single integrated circuit package.
• Utilizes Advanced Low-power Schottky (ALS) technology to achieve faster switching speeds compared to standard LS series devices while maintaining reduced power consumption.
• Features robust output drive capabilities with a specified low-level sink current of 8 mA suitable for direct interfacing with multiple loads.

Applications

• Box cassette player auto-power-off circuits
• Flashlight control circuits for toys or sports models

Procurement Notes

Verify the specific ordering suffix to confirm the package type and environmental compliance status. Ensure the procurement channel provides valid manufacturer documentation or datasheets to confirm the component's authenticity and technical specifications before integration into designs.

Selection Notes

Select this component when designing circuits requiring three separate 3-input NOR functions in a through-hole configuration. Consider the ALS series performance profile regarding speed and power dissipation relative to other logic families available from Texas Instruments.

Part Context

This component is part of the broader SN74ALS27A family of logic gates produced by Texas Instruments. It serves as a discrete solution for implementing complex Boolean logic operations in digital systems without requiring multiple individual gate packages.

Replacement Considerations

SN74ALS27ANE4