LM2901SNG

Overview

The LM2901SNG is a quad voltage comparator manufactured by onsemi, featuring four independent precision comparators in a 14-pin SOIC-N surface-mount package. It operates from a single supply ranging from 2V to 36V or dual supplies of ±1V to ±18V. Key electrical characteristics include a typical response time of 1.3µs, low input bias current of 25nA, and an output saturation voltage of 130mV at 4mA. The device supports rail-to-rail common-mode input voltage ranges including ground and offers TTL, DTL, ECL, MOS, and CMOS compatible outputs.

Feature Summary

• Quad architecture with four independent high-gain voltage comparators integrated on a single chip
• Wide operating voltage range supporting both single and split power supply configurations
• Low power consumption with supply current independent of the supply voltage level
• Input common-mode voltage range extends to ground even when operated from a single positive supply

Applications

• Level detection circuits for signal monitoring
• Low-level sensing applications requiring high sensitivity
• Memory address decoding systems
• Automotive engine control units and safety systems
• Industrial process control and instrumentation

Procurement Notes

Verify the specific suffix 'SNG' against the official onsemi datasheet to confirm pinout compatibility and thermal specifications. Ensure the component meets RoHS directives if required for your assembly process. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a quad comparator solution is needed with low offset voltage and wide supply flexibility. It is suitable for designs requiring rail-to-rail input capability without negative supply rails. Consider the SOIC-N package for space-constrained PCB layouts where through-hole options are not feasible.

Part Context

The LM2901 series belongs to a family of low-power quad voltage comparators widely used in consumer, automotive, and industrial electronics. Manufactured by onsemi, these devices are designed to replace older discrete comparator solutions, offering improved performance and reduced board space. The SNG variant specifically denotes the surface-mount plastic small outline package configuration.

Replacement Considerations

Compatible substitutes include the LM239 and LM339 series from various manufacturers. Verify that replacement parts maintain the same quad channel count, supply voltage range, and output drive capabilities to ensure circuit functionality remains unchanged.