SN74ALS20AD

Overview

The SN74ALS20AD is a dual 4-input positive-NAND gate integrated circuit manufactured by Texas Instruments. It belongs to the ALS logic family, utilizing bipolar input technology and push-pull output stages. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum data rate of 75 Mbps. It features a propagation delay between 10 ns and 50 ns, with a low-level output current capability of 8 mA and a high-level output current of -0.4 mA. The component is housed in a 14-pin SOIC package and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Dual-channel architecture providing two independent 4-input NAND logic gates within a single package.
• High-speed performance characteristics enabled by Advanced Low-power Schottky (ALS) technology.
• Push-pull output configuration ensuring robust drive capabilities for digital logic applications.

Applications

• Digital logic signal processing and Boolean operations
• General-purpose combinational logic circuits
• Microprocessor system interface logic

Procurement Notes

Verify the specific ordering suffix 'AD' to confirm the SOIC-14 surface-mount package variant. Ensure compatibility with standard 5V logic levels and check for RoHS compliance status as indicated in official documentation. Confirm availability through authorized distributors, as lead times may vary based on production schedules.

Selection Notes

Select this component when designing circuits requiring dual 4-input NAND functionality with moderate speed requirements. The ALS series offers a balance between power consumption and switching speed suitable for general industrial applications. Consider the SOIC package constraints for PCB layout and thermal management during selection.

Part Context

This part is a member of the Texas Instruments SN74ALS20A family, which includes variants with different packaging options such as PDIP and SOIC. The 'AD' suffix specifically denotes the SOIC-14 surface-mount package. This family provides standardized logic functions compatible with industry-standard TTL interfaces.

Replacement Considerations

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