SN74LS33DR

Inverter Gates Overview

The SN74LS33DR is a quad 2-input positive-NOR buffer manufactured by Texas Instruments. It belongs to the 74LS logic series and features open-collector outputs within a 14-pin SOIC package. The device operates on a supply voltage ranging from 4.75 V to 5.25 V, with a typical propagation delay of 20 ns. It supports low-level output currents up to 24 mA and high-level output currents up to 250 uA. The component functions reliably across an operating temperature range of 0°C to +70°C.

Inverter Gates Feature Summary

• Contains four independent 2-input NOR gates for complex logic implementation
• Features open-collector outputs suitable for wired-AND configurations
• Designed for surface-mount assembly in compact electronic circuits

Inverter Gates Applications

• Digital logic circuit design requiring NOR functionality
• Interface circuits utilizing open-collector output capabilities
• General-purpose logic buffering in consumer electronics

Inverter Gates Procurement Notes

Verify the specific manufacturer datasheet for the SN74LS33DR to confirm current RoHS compliance status and lead times. Ensure that the open-collector nature of the outputs aligns with the target circuit requirements, as external pull-up resistors are necessary for proper high-state operation. Cross-reference the package dimensions against the PCB footprint to guarantee mechanical compatibility during assembly.

Inverter Gates Selection Notes

Select this component when a quad 2-input NOR gate with open-collector outputs is required in a surface-mount form factor. The LS series offers a balance of speed and power consumption suitable for standard digital applications. Consider the 20 ns propagation delay and 24 mA sink capability to ensure signal integrity and load driving requirements are met within the specified voltage and temperature ranges.

Inverter Gates Part Context

This part is part of the Texas Instruments 74LS family, which provides standard TTL-compatible logic functions in modern packaging. The 'D' suffix indicates the SOIC package type, while the 'R' suffix denotes reel packaging for automated surface-mount processing. It serves as a direct replacement for through-hole variants in designs transitioning to SMD manufacturing processes.

Inverter Gates Replacement Considerations

The SN74LS33D is listed as a parameter-equivalent alternative available in tube packaging. Verify pinout compatibility and electrical specifications before substituting, as packaging differences may impact board layout and assembly methods.