LM339PWRG3

Overview

The LM339PWRG3 is a quad differential comparator manufactured by Texas Instruments, housed in a 14-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 an open-collector output configuration compatible with TTL and CMOS logic families. Key electrical specifications include a maximum input offset voltage of 5mV, an input bias current of 250nA, and a typical response time of 1.3µs. It draws a supply current of approximately 2mA and supports an output sink current of 16mA at 5V.

Feature Summary

• Integrates four independent differential comparators within a compact surface-mount package for space-constrained designs.
• Features an open-collector output stage that allows flexible interfacing with various digital logic families including TTL and CMOS.
• Operates effectively across a wide single-supply voltage range, supporting low-voltage applications down to 2V.
• Provides high-speed signal comparison capabilities with a typical propagation delay suitable for general-purpose analog processing.

Applications

• Battery-powered systems requiring efficient power management and low supply current consumption
• Overvoltage and undervoltage detection circuits for power supply monitoring
• Analog-to-digital converter interfaces for signal conditioning and threshold detection
• Temperature sensing and control loops utilizing sensor voltage comparisons

Procurement Notes

Verify the specific suffix 'RG3' indicates RoHS compliance and lead-free manufacturing status as per Texas Instruments standards. Confirm the TSSOP-14 package dimensions match your PCB footprint requirements. Ensure the operating temperature range aligns with your environmental constraints. Cross-reference the datasheet revision date to ensure compatibility with your design specifications. Validate that the open-collector output requires appropriate pull-up resistors for your target logic levels.

Selection Notes

Select this component when multiple independent voltage comparisons are required in a single integrated circuit. It is suitable for designs needing compatibility with both TTL and CMOS logic outputs without additional level shifting. Consider this part for applications where low power consumption is critical due to its low supply current. It serves as a direct replacement for other quad comparators in legacy designs, provided pinout and electrical characteristics are verified against the new schematic requirements.

Part Context

This device belongs to the LM339 family of quad differential comparators, widely used in industrial and consumer electronics. It shares functional similarities with the LM139 and LM2901 series but offers optimized performance for modern surface-mount assembly processes. The RG3 suffix denotes environmental compliance, distinguishing it from older non-compliant variants while maintaining identical electrical functionality and pinout configurations.

Replacement Considerations

The LM339PW is a direct pin-compatible alternative without the environmental suffix. The LM339MX-NOPB offers similar specifications in an SOIC-14 package. Verify that substitute parts maintain the same open-collector output structure and supply voltage ranges to ensure circuit compatibility without redesigning external components.