SN74LS33D

Inverter Gates Overview

The SN74LS33D is a quad 2-input positive-NOR buffer integrated circuit manufactured by Texas Instruments. It belongs to the 74LS logic series and features open-collector outputs. The device operates within a supply voltage range of 4.75V to 5.25V. Key electrical parameters include a low-level output current of 24mA, a high-level output current of 250µA, and a propagation delay of 20ns at standard conditions. It supports a maximum clock rate of 32MHz under specific load conditions and functions reliably across an operating temperature range of 0°C to +70°C.

Inverter Gates Feature Summary

• Contains four independent 2-input NOR logic gates within a single package.
• Features open-collector outputs suitable for wired-AND configurations or driving higher voltage loads.
• Provides robust low-level sink current capability for interfacing with various digital loads.

Inverter Gates Applications

• Digital logic circuits requiring NOR gate functionality
• Wired-AND bus implementations using open-collector outputs
• General-purpose logic buffering in TTL-compatible systems

Inverter Gates Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm pinout compatibility and electrical characteristics. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check for any product change notices regarding manufacturing site or material composition updates before finalizing procurement specifications.

Inverter Gates Selection Notes

Select this component when designing circuits that require multiple NOR gates with open-collector output flexibility. Ensure the design accommodates the pull-up resistors necessary for proper operation of the open-collector stage. Verify that the system voltage remains within the specified 4.75V to 5.25V range to maintain signal integrity and timing performance.

Inverter Gates Part Context

This part is part of the widely used 74LS (Low-power Schottky) family of digital logic ICs. It serves as a fundamental building block for complex digital systems, offering faster switching speeds than standard 7400 series logic while consuming less power than original TTL designs. The SOIC-14 package allows for surface-mount integration into modern PCB layouts.

Inverter Gates Replacement Considerations

SN74LS33DR is listed as a parameter-equivalent alternative from the same manufacturer.