LM339DG4

Overview

The LM339DG4 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-SOIC surface-mount package. It operates within a supply voltage range of 2 V to 30 V and draws a typical operating supply current of 500 uA. The device features an open collector output type with a response time of 1.3 us. Key electrical parameters include a maximum input offset voltage (Vos) of 5 mV and an input bias current (Ib) of 250 nA. Each channel can source up to 6 mA of output current. The component is designed for commercial temperature ranges, typically functioning between 0°C and +70°C.

Feature Summary

• Integrates four independent differential comparators into a single low-power package.
• Features open-collector outputs compatible with various logic families.
• Operates over a wide single-supply voltage range from 2 V to 30 V.

Applications

• Voltage monitoring systems
• Threshold detection circuits
• Logic level conversion

Procurement Notes

Verify the specific suffix 'DG4' against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Ensure the SOIC-14 package dimensions match the target PCB footprint. Confirm that the open-collector output requirement aligns with the system's pull-up resistor configuration. Check for any recent lifecycle notices or obsolescence warnings directly from Texas Instruments before finalizing procurement.

Selection Notes

Select this component when a quad comparator solution is required with low power consumption and wide supply voltage flexibility. The open-collector output necessitates external pull-up resistors, which allows for voltage translation capabilities. Consider the 1.3 us response time for speed requirements. Compare against the LM139 series if extended industrial temperature ranges or rail-to-rail outputs are necessary instead of the standard commercial grade offered here.

Part Context

The LM339DG4 belongs to the LM339 family of low-power, low-offset voltage quad comparators. This series is widely used in general-purpose analog applications requiring multiple comparison functions. The 'G4' suffix indicates lead-free construction and compliance with specific environmental standards set by Texas Instruments. It serves as a direct replacement for older non-green versions of the LM339 in existing designs.

Replacement Considerations

• LM339DRG4
• LM339DR