LM339DRG4

Overview

The LM339DRG4 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-SOIC surface-mount package. It operates on a single supply voltage ranging from 2 V to 30 V with a typical quiescent current of 500 uA per device. The output stage features an open-collector configuration capable of sinking up to 6 mA per channel, allowing compatibility with various logic families. Key electrical characteristics include a maximum input offset voltage of 5 mV and an input bias current of 50 nA. The device supports a wide common-mode voltage range and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates four independent high-gain voltage comparators in a compact SOIC-14 package for space-constrained designs.
• Features an open-collector output structure that facilitates wired-AND connections and seamless interfacing with diverse logic systems.
• Supports operation across a broad single-supply voltage spectrum, enabling direct sensing of signals near ground potential.

Applications

• Temperature monitoring circuits utilizing sensor threshold detection
• Over-voltage protection mechanisms in power management systems
• Window comparator configurations for signal level verification

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free composition and RoHS compliance as per manufacturer specifications. Confirm the SOIC-14 package dimensions match your PCB footprint requirements. Ensure the commercial grade temperature range (0°C to +70°C) aligns with your operational environment constraints before finalizing procurement.

Selection Notes

Select this component when multiple independent comparison functions are required within a limited board area. The open-collector output necessitates external pull-up resistors, which must be sized according to the target logic voltage levels and switching speed requirements. Consider the 500 uA quiescent current if low-power standby modes are critical to the system design.

Part Context

This part belongs to the LM339 family of analog comparators, designed for general-purpose voltage comparison tasks. It serves as a standard solution for applications requiring multiple comparator channels without the complexity of operational amplifiers. The DRG4 variant specifically denotes the tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

The LM339DR is a compatible alternative offering identical pinout and functionality but may differ in manufacturing lot or specific environmental qualification details. Verify datasheet parameters for both parts to ensure equivalence in offset voltage and response time for critical applications.