TS3702IPT

Overview

The TS3702IPT is a micropower dual CMOS voltage comparator manufactured by STMicroelectronics. It features two independent channels in an 8-TSSOP surface-mount package. The device operates on a single supply voltage ranging from 2.7 V to 16 V, or dual supplies of ±1.35 V to ±8 V. Key electrical parameters include a typical supply current of 9 µA per comparator, a maximum input offset voltage of 5 mV at 10 V, and a typical response time of 2.7 µs for a 5 mV overdrive. It provides a push-pull output capable of sourcing or sinking up to 20 mA, eliminating the need for external pull-up resistors.

Feature Summary

• Push-pull CMOS output stage eliminates the requirement for external pull-up resistors typically needed with open-collector comparators.
• Extremely low input bias current and high input impedance minimize loading effects on signal sources.
• Input common-mode voltage range includes ground, allowing direct interfacing with ground-referenced signals.
• Functionally compatible with bipolar LM393 devices while offering significantly lower power consumption.

Applications

• Battery-powered systems requiring ultra-low quiescent current
• Threshold detection circuits in portable electronics
• Signal conditioning interfaces for microcontrollers
• Window comparator configurations

Procurement Notes

Verify the specific suffix IPT confirms the TSSOP-8 package and industrial temperature range (-40°C to +125°C). Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling procedures are followed during assembly due to CMOS input sensitivity. Cross-reference pinouts with legacy LM393 designs if replacing existing hardware to ensure mechanical compatibility.

Selection Notes

Select the TS3702IPT when space savings from integrated pull-up outputs are critical compared to standard open-collector comparators. Choose this component for applications demanding low static current consumption below 10 µA per channel. Consider this part for designs requiring rail-to-rail output swing without additional passive components. Evaluate the 2.7 V minimum supply voltage against system battery discharge curves to ensure adequate operation throughout the lifecycle.

Part Context

The TS3702 belongs to STMicroelectronics' family of micropower analog comparators designed to replace traditional bipolar counterparts like the LM393. This series emphasizes reduced power dissipation while maintaining comparable speed performance. The TSX3702 serves as an enhanced variant within this lineage, offering improved offset voltage and ESD tolerance, whereas the TS3702 focuses on cost-effective general-purpose comparison with minimal current draw.

Replacement Considerations

TLC3702IPWR is a confirmed direct substitute from Texas Instruments.