SN74ALS38BNS

Overview

The SN74ALS38BNS is a quad 2-input NAND gate integrated circuit manufactured by Texas Instruments. It belongs to the Advanced Low-power Schottky (ALS) logic series and features open-collector outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in a 14-SOIC package. Key electrical specifications include a low-level output current of 24 mA, a high-level output current of -24 mA, and a maximum propagation delay of 33 ns at 5 V with a 50 pF load. It functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Contains four independent 2-input NAND logic gates within a single package.
• Features open-collector outputs suitable for wired-AND configurations and interfacing with higher voltage loads.
• Utilizes Advanced Low-power Schottky technology to achieve faster switching speeds while maintaining low power consumption.

Applications

• Digital logic circuits requiring NAND functionality
• Wired-AND bus implementations
• Interface circuits connecting different logic families

Procurement Notes

Verify the specific suffix 'BNS' against the manufacturer's official documentation to confirm the exact package variant and tape-and-reel specifications. Ensure compatibility with standard SOIC-14 footprints during PCB layout. Confirm RoHS compliance status through the latest environmental declaration documents provided by Texas Instruments before finalizing procurement.

Selection Notes

Select this component when open-collector NAND logic is required for driving external loads or implementing wired-AND connections. The ALS series offers a balance of speed and power efficiency compared to standard TTL. Consider the 24 mA sink capability for direct drive applications without additional buffering. Verify that the system voltage remains within the 4.5 V to 5.5 V operational range.

Part Context

This part is part of the SN74ALS38 family of quad 2-input NAND gates with open-collector outputs. It serves as a surface-mount alternative to through-hole DIP packages, facilitating automated assembly. The ALS series represents an evolution in Schottky logic, providing improved performance over earlier LS variants while maintaining pin-out compatibility with standard 74-series logic devices.

Replacement Considerations

SN74ALS38BN