LM2903TH-13

Overview

The LM2903TH-13 is a dual differential voltage comparator manufactured by Diodes Incorporated, housed in an 8-pin TSSOP surface-mount package. It operates from a single supply of 2V to 36V or split supplies of ±1V to ±18V. The device features a typical input offset voltage of 2mV and a maximum of 7mV at +25°C. Supply current is typically 0.6mA at 5V and 0.7mA at 30V. Input bias current is typically 25nA, with a maximum of 250nA. Output sink current reaches 16mA, and saturation voltage is typically 200mV at 4mA. Operating temperature range spans -40°C to +125°C.

Feature Summary

• Dual independent precision voltage comparators designed for wide voltage operation
• Low power supply current drain that remains independent of the supply voltage magnitude
• Input common-mode voltage range includes ground potential
• Output voltage compatible with TTL, MOS, and CMOS logic families

Applications

• Direct interfacing with TTL and CMOS logic circuits
• Voltage monitoring and threshold detection systems
• Pulse generation and waveform shaping applications
• Logic level translation between different voltage domains

Procurement Notes

Verify the specific ordering suffix matches the required package type and tape-and-reel quantity. Confirm RoHS compliance status and environmental declarations against the manufacturer's latest documentation. Ensure the component grade aligns with project specifications before finalizing procurement orders.

Selection Notes

Select this component when dual comparators are required within a compact TSSOP-8 footprint. Consider the low input offset voltage for precision applications. Evaluate the output sink capability against load requirements. Verify compatibility with available supply voltages across the full operating temperature range.

Part Context

This part belongs to the LM2901/2903 series of dual and quad differential comparators. The TH suffix indicates the TSSOP-8 package variant. The -13 suffix denotes tape-and-reel packaging. The series provides industry-standard pinouts for easy integration into existing designs requiring multiple comparison functions.

Replacement Considerations

LM2903S-13 (SO-8 package)

FAQ

What is the maximum differential input voltage allowed?

The differential input voltage can equal the power supply voltage, up to a maximum of 36V.

Can the inputs go negative relative to ground?

The input common-mode voltage range includes ground. However, inputs should not go more than 0.3V below the negative supply rail to avoid damage.

Is hysteresis required for stable operation?

Hysteresis is recommended to prevent oscillation caused by stray capacitance coupling between the output and inputs during state transitions.