LM2903D-VS1R

Overview

The LM2903D-VS1R is a dual-channel voltage comparator manufactured by 3PEAK, housed in an 8-pin MSOP package. It operates on a single supply of 3 V to 36 V or dual supplies of ±1.5 V to ±18 V. The device features low quiescent current (1 mA typical) and low input bias current (25 nA typical). Input common-mode voltage includes ground. Outputs are open-drain, allowing wired-AND functionality and compatibility with TTL and CMOS logic levels. Operating temperature range is -40°C to +125°C.

Feature Summary

• Dual comparators integrated on a single monolithic substrate for space-efficient designs.
• Wide supply voltage range supports operation from 3 V to 36 V on a single supply.
• Open-drain outputs enable configurable high-level output voltage and wired-AND connections.
• Input common-mode voltage range extends to ground, facilitating direct interfacing with sensors.

Applications

• High-speed sampling circuits
• Peak and zero-crossing detectors
• Threshold detectors and discriminators
• Infrared receiver signal processing

Procurement Notes

Verify the specific ordering suffix VS1R corresponds to the MSOP-8 package and tape-and-reel quantity of 3000 units as defined in the manufacturer's order information table. Confirm RoHS compliance and halogen-free status requirements against project specifications before finalizing procurement orders.

Selection Notes

Select this component when a dual comparator with wide supply voltage tolerance and ground-referenced input capability is required. The MSOP-8 package is suitable for applications needing compact surface-mount solutions. Ensure external pull-up resistors are provided for the open-drain outputs to achieve valid logic high states compatible with the target load circuitry.

Part Context

This part belongs to the LM2903D series of dual comparators produced by 3PEAK. The series is designed for general-purpose analog comparison tasks requiring low power consumption and broad operating voltage ranges. The LM2903D-VS1R variant specifically utilizes the MSOP-8 footprint, distinguishing it from SOP-8 variants within the same electrical family.

Replacement Considerations

Cross-reference with other dual comparators featuring open-drain outputs and similar supply voltage ranges if pinout compatibility is not strictly required. Verify that replacement parts support the -40°C to +125°C operating temperature range and maintain comparable input offset voltage and bias current specifications.

FAQ

What is the maximum supply voltage for the LM2903D-VS1R?

The absolute maximum supply voltage (V+ minus V-) is 40 V, while the recommended operating range is up to 36 V.

Can the outputs be connected together?

Yes, the open-drain outputs can be connected to other open-collector outputs to achieve a wired-AND logical relationship.

Does the input common-mode voltage include ground?

Yes, the common-mode input voltage range includes ground even when operated from a single positive supply.