SN74S38NS

Inverter Gates Overview

The SN74S38NS is a quad 2-input positive-NAND buffer manufactured by Texas Instruments. It features open-collector outputs, allowing for flexible interfacing and wired-OR configurations. The device operates within a supply voltage range of 4.75V to 5.25V. Key electrical specifications include a maximum propagation delay of 9ns at 5V with 150pF load and an input logic level low of 0.5V. It is housed in a 14-pin Small Outline Package (SOIC) suitable for surface mount applications.

Inverter Gates Feature Summary

• Contains four independent 2-input NAND gates in a single package
• Open-collector output structure enables wired-logic connections
• Compatible with standard 5V logic systems

Inverter Gates Applications

• General-purpose digital logic buffering
• Wired-OR gate implementations
• Interface circuits requiring open-collector drive capability

Inverter Gates Procurement Notes

Verify the exact suffix 'NS' corresponds to the SOIC tube packaging variant when sourcing. Confirm that the open-collector nature of the outputs aligns with the specific circuit design requirements, as pull-up resistors are necessary for proper high-state operation. Ensure the operating temperature range meets the environmental conditions of the final assembly.

Inverter Gates Selection Notes

Select this component when a quad NAND configuration with open-collector outputs is required for 5V TTL-compatible logic designs. Consider the 14-pin SOIC package constraints for PCB layout. Evaluate the 9ns propagation delay against system timing budgets. Verify that the open-collector topology suits the downstream load requirements compared to push-pull alternatives.

Inverter Gates Part Context

This part belongs to the Texas Instruments SN74S series, which utilizes Schottky-clamped transistor technology for improved speed over standard TTL. The SN74S38 specifically provides quadruple 2-input NAND functions with open collectors, distinguishing it from standard buffered NAND gates that feature active pull-ups.

Inverter Gates Replacement Considerations

Check for SN74S38DRG4 or other SN74S38 variants with different suffixes indicating package or tape-and-reel options. Ensure functional equivalence regarding the open-collector output type and pinout compatibility before substitution.