LM339BIPWR

Overview

The LM339BIPWR is a quad differential comparator manufactured by Texas Instruments, housed in an 8-pin TSSOP surface-mount package. It operates on a single supply voltage ranging from 2V to 36V or dual supplies of ±1V to ±18V. The device features low input offset voltage and low bias current, with a typical response time of 1 microsecond. Each output channel provides a sink current capability of up to 21mA, allowing direct interfacing with various logic families including CMOS and TTL without additional pull-up resistors.

Feature Summary

• Quad differential architecture providing four independent comparison channels within a compact footprint
• Low power consumption characteristics suitable for battery-operated applications
• Open-collector outputs compatible with multiple logic voltage levels
• Wide common-mode voltage range extending below the negative supply rail

Applications

• Temperature sensing circuits utilizing thermistor bridges
• Over-voltage and under-voltage protection monitoring systems
• Window comparator configurations for signal level verification
• Logic level shifting between different voltage domains

Procurement Notes

Verify the specific suffix IPWR indicates the TSSOP-8 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the open-collector output requirement by validating external pull-up resistor values against the target logic family specifications.

Selection Notes

Select this component when high precision is required due to its B-grade offset voltage specifications compared to standard variants. Consider the TSSOP-8 package constraints for thermal management and PCB space limitations. Evaluate the 21mA sink current capability against load requirements to ensure adequate drive strength for downstream logic inputs without exceeding absolute maximum ratings.

Part Context

This part belongs to the LM339 family of low-power quad comparators, widely used in industrial and consumer electronics. It serves as a successor to older bipolar comparator designs while maintaining pin-out compatibility with legacy systems. The device is designed for general-purpose analog comparison tasks where low power and wide supply voltage operation are critical design parameters.

Replacement Considerations

• LM339DR

FAQ

What is the maximum sink current per channel?

Each output channel can sink up to 21mA.

Does the input common-mode voltage include ground?

Yes, the common-mode voltage range includes ground even when operating from a single positive supply.