LM2903BIDR

Overview

The LM2903BIDR is a dual differential voltage comparator manufactured by Texas Instruments. It operates on a single power supply ranging from 2 V to 36 V, or split supplies of ±1 V to ±18 V. The device features an open-collector output configuration and includes two independent channels within an SOIC-8 package. Key electrical specifications include a maximum input offset voltage of 7 mV, a typical quiescent current of 2.5 mA, and a response time of 1.3 µs. It supports a maximum output sink current of 16 mA at 5 V and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Dual-channel differential voltage comparison with open-collector outputs for flexible interfacing
• Wide single-supply operating voltage range from 2 V to 36 V
• Extended industrial temperature operation capability

Applications

• Overvoltage detection circuits
• Threshold sensing applications
• Logic level translation between different voltage domains

Procurement Notes

Verify the specific suffix 'IDR' corresponds to the SOIC-8 surface-mount package and tape-and-reel delivery format as specified in the official datasheet. Confirm that the component meets RoHS compliance requirements for your target assembly process. Ensure the ordering information matches the exact manufacturer part number to avoid pinout or electrical characteristic mismatches during procurement.

Selection Notes

Select this component when a low-cost, general-purpose dual comparator is required for single-supply systems. It is suitable for applications where open-collector outputs allow wired-AND configurations or direct interface to digital logic families. Consider the 7 mV maximum input offset voltage for precision threshold requirements and verify that the 1.3 µs response time meets the speed constraints of the signal being monitored.

Part Context

The LM2903BIDR belongs to the LMx93/LM2903 family of dual voltage comparators produced by Texas Instruments. This series is designed for cost-sensitive applications requiring reliable differential voltage comparison. The 'B' designation typically indicates a specific performance grade regarding input offset voltage compared to standard variants. The 'IDR' suffix denotes the specific package type and reel packaging configuration used for automated surface-mount assembly.

Replacement Considerations

Compatible substitutes include the LM2903DR and LM2903IDR from Texas Instruments, which share identical pinouts and core electrical characteristics. Other manufacturers such as STMicroelectronics offer equivalents like the LM2903DT, though verification of specific parameter limits and package dimensions is required before substitution.