LM3302M

Overview

The LM3302M is a quad general-purpose differential comparator manufactured by Texas Instruments, originally developed under the Harris Corporation semiconductor division. It integrates four independent voltage comparators designed for operation from a single power supply or dual supplies. The device supports a wide supply voltage range of 2 V to 28 V and features low input bias current and offset voltage characteristics. Its open-collector outputs are compatible with TTL, MOS, and CMOS logic families, allowing for wired-AND connections.

Feature Summary

• Integrates four independent high-gain voltage comparators within a single package
• Operates effectively with single or dual power supplies across a wide voltage span
• Features open-collector outputs capable of wired-AND configuration for logical interfacing
• Provides output compatibility with standard digital logic families including TTL, MOS, and CMOS

Applications

• General-purpose voltage monitoring and threshold detection circuits
• Interface between analog sensors and digital logic systems
• Waveform generation and shaping applications
• Over-voltage and under-voltage protection circuits

Procurement Notes

Verify that the specific LM3302M unit corresponds to the original Harris Corporation manufacturing lineage or its subsequent Texas Instruments successor documentation. Confirm the package type matches the required board layout, as variations exist between ceramic DIP and plastic SOIC formats. Ensure the datasheet revision aligns with the design requirements for electrical parameters such as propagation delay and input offset voltage.

Selection Notes

Select this component when a multi-channel comparison solution is required without consuming excessive board space. It is suitable for designs needing flexible supply voltages and direct interface with various logic families. Consider the open-collector output limitation when designing pull-up resistor networks. Evaluate the propagation delay specifications against the speed requirements of the target application to ensure signal integrity.

Part Context

The LM3302 series originated from Harris Semiconductor before the company's semiconductor assets were acquired by Texas Instruments. This transition established TI as the primary manufacturer and support provider for the part number. The device belongs to a family of quad comparators that includes variants like the LM339 and LM2901, sharing similar functional architectures but differing in specific electrical characteristics and temperature ranges.

Replacement Considerations

• LM339
• LM2901