LTC1542IS8#TRPBF

Overview

The LTC1542IS8#TRPBF is a micropower operational amplifier and comparator integrated in an 8-lead SOIC package. It operates from a single supply voltage range of 2.5V to 12.6V or dual supplies of ±1.25V to ±6.3V, with a typical supply current of 5µA. The op amp features rail-to-rail output swing, unity-gain stability, a gain bandwidth product of 12kHz, and a slew rate of 8V/ms. The input common mode range extends from the negative supply to within 1.3V of the positive supply. The comparator includes internal hysteresis of ±2.25mV and CMOS/TTL compatible outputs.

Feature Summary

• Combines a micropower op amp and comparator in a single 8-pin package
• Op amp output stage swings rail-to-rail while driving capacitive loads up to 1000pF
• Comparator features internal hysteresis for clean switching on slow-moving signals
• Input common mode range includes ground (negative supply rail)

Applications

• Battery-powered systems
• Solar-powered systems
• Automotive keyless entry
• Low frequency local area alarms and detectors
• Infrared receivers for remote controls

Procurement Notes

Verify that the ordering suffix #TRPBF confirms tape and reel packaging and lead-free compliance. Confirm the 'I' grade designation matches the required industrial temperature operating range of -40°C to +85°C. Ensure the SOIC-8 package dimensions align with the target PCB footprint constraints.

Selection Notes

Select this component when a combined amplification and threshold detection function is required in space-constrained designs. The LTC1542 differs from the LTC1541 by providing a dedicated external inverting comparator input rather than an internally connected reference. This allows for flexible comparator threshold setting using external resistors instead of relying on the fixed internal bandgap reference.

Part Context

This device belongs to the LTC1541/LTC1542 family of micropower signal chain components. It serves as a pin-compatible upgrade for legacy parts such as the MAX951 and MAX953. The family offers options in MSOP, SO-8, and DFN packages to accommodate various board space requirements.

Replacement Considerations

LTC1542IS8#PBF