LP2901DRG4

Overview

The LP2901DRG4 is a quad differential comparator manufactured by Texas Instruments, housed in a surface-mount SOIC-14 package. It operates on a single supply voltage ranging from 2 V to 30 V or dual supplies up to ±15 V. The device features an open-collector output type and delivers a typical response time of 1.3 µs. It supports a maximum operating temperature of +125 °C and a minimum of -40 °C. Key electrical parameters include a typical input offset voltage of 7 mV and a supply current of 2.5 mA.

Feature Summary

• Integrates four independent differential comparators within a compact surface-mount package for space-constrained designs.
• Features open-collector outputs compatible with CMOS and TTL logic families, facilitating direct interfacing with digital systems.
• Operates across a wide single-supply voltage range, eliminating the need for dual power rails in many applications.

Applications

• General-purpose analog signal comparison in industrial control circuits
• Voltage monitoring and threshold detection in embedded systems
• Level shifting interfaces between analog sensors and digital microcontrollers

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm lead-free status and RoHS compliance details. Ensure the SOIC-14 footprint matches your PCB design constraints. Confirm that the 1.3 µs response time meets your system's timing requirements, as faster variants like the LM2901 series exist. Check for any obsolescence notices or lifecycle changes directly from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when cost-effective quad comparison is required without high-speed demands. The LP2901 offers standard performance suitable for general applications, whereas the LM2901 provides faster switching speeds if needed. Consider the TSSOP variant (LP2901QPWR) if a smaller profile is necessary. Verify that the open-collector output configuration aligns with your pull-up resistor strategy and logic level requirements.

Part Context

The LP2901 belongs to Texas Instruments' family of low-power quad comparators. It serves as a cost-optimized alternative to the higher-performance LM2901 series, which offers faster response times. Both share similar pinouts and functional architectures but differ in speed specifications. This part is designed for general-purpose use where moderate speed and low cost are prioritized over high-frequency operation.

Replacement Considerations

The LM2901DR is a pin-compatible upgrade offering faster 300 ns response time. For automotive applications, consider the LM2901QDRQ1 or LP2901AVQPWRG4Q1 which meet AEC-Q100 standards. The LP2901QPWRG4 provides the same functionality in a smaller TSSOP-14 package.