LM339ADBR

Overview

The LM339ADBR is a quad differential comparator manufactured by Texas Instruments, designed for single-supply operation. It features four independent voltage comparators within a single package. The device operates with a supply voltage range from 2 V to 30 V and draws a typical operating supply current of 500 uA. It utilizes an open collector output configuration capable of sinking up to 6 mA per channel. The input offset voltage is specified at 3 mV, with an input bias current of 250 nA. The response time is 1.3 us. It is housed in a SOIC-14 surface-mount package and supports an operating temperature range from 0 C to +70 C.

Feature Summary

• Integrates four independent differential voltage comparators for multi-channel signal processing
• Supports wide single-supply voltage operation ranging from 2 V to 30 V
• Features low power consumption with a typical operating supply current of 500 uA
• Provides open collector outputs compatible with various logic families

Applications

• Battery-powered systems requiring low quiescent current
• Over-voltage and under-voltage detection circuits
• Temperature sensing and control applications
• Logic level shifting between different voltage domains

Procurement Notes

Verify the specific suffix 'B' against the official Texas Instruments datasheet to confirm it denotes the tape-and-reel packaging variant rather than a functional difference. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity. Check for any recent product lifecycle notices or obsolescence warnings associated with this specific package style.

Selection Notes

Select this component when multiple independent comparison functions are required in a compact surface-mount footprint. It is suitable for designs needing wide common-mode input voltage ranges that include ground. Consider the open-collector output requirement for external pull-up resistors. Compare performance metrics such as input offset voltage and propagation delay against other quad comparators if higher precision or speed is necessary.

Part Context

The LM339 series is a widely used family of quad differential comparators known for their versatility in single-supply applications. The LM339ADBR represents the commercial grade version of this family, offering standard performance specifications. It shares architectural similarities with the LM139 (military grade) and LM2903/LM393 (dual channel variants). The 'ADR' or 'ADBR' suffix typically indicates the SOIC-14 surface-mount package with reel packaging.

Replacement Considerations

• LM339DR
• LM339DRG4
• LM339D