LM239PWRG4

Overview

The LM239PWRG4 is a quad differential voltage comparator manufactured by Texas Instruments, designed for operation from a single power supply. It features four independent comparators with open-collector outputs compatible with CMOS and TTL logic families. The device operates within a supply voltage range of 2 V to 30 V and draws a typical operating current of 500 µA. Key electrical specifications include a response time of 300 ns, an input offset voltage of 5 mV, and an input bias current of 250 nA. Each channel provides an output current capability of 6 mA. The component is housed in a 14-pin TSSOP package and supports an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates four independent differential comparators into a single compact package for space-constrained designs.
• Features open-collector outputs that facilitate wired-AND configurations and compatibility with various logic families.
• Operates effectively from a single low-voltage power supply, simplifying system power architecture.
• Includes internal frequency compensation to ensure stability without requiring external components.

Applications

• Overvoltage and undervoltage detection circuits
• Window comparator implementations
• Analog-to-digital converter front-end stages
• Voltage monitoring systems

Procurement Notes

Verify the specific suffix G4 confirms RoHS compliance and green material status as per Texas Instruments standards. Confirm the TSSOP-14 package dimensions match your PCB footprint requirements. Ensure the industrial temperature grade (-40°C to +85°C) meets your operational environment constraints. Cross-reference the datasheet revision date to guarantee alignment with current manufacturing specifications.

Selection Notes

Select this component when multiple independent comparison functions are required in a single integrated circuit. It is suitable for applications needing open-collector outputs for level shifting or wired-logic connections. Consider this part for cost-sensitive designs where low quiescent current and single-supply operation are prioritized over high-speed performance. Verify that the 300 ns propagation delay is sufficient for your signal processing timing requirements.

Part Context

The LM239PWRG4 belongs to the LM239 family of quad differential comparators, which are industry-standard devices for general-purpose analog comparison tasks. This specific variant includes the G4 suffix, indicating it is a lead-free and RoHS-compliant version of the standard LM239PWR. It shares functional similarities with the LM139 and LM339 series but offers optimized performance characteristics for modern electronic systems.

Replacement Considerations

Direct pin-compatible alternatives include the LM239DR and LM239N. For RoHS-compliant replacements, consider the LM239DRG4. Verify that substitute parts maintain the same TSSOP-14 package and electrical specifications before integration.