TS3702IDT

Overview

The TS3702IDT is a micropower dual CMOS voltage comparator manufactured by STMicroelectronics. It operates within a wide single supply range of 2.7V to 16V or dual supplies from ±1.35V to ±8V. The device features an extremely low supply current of 9µA typical per comparator and an input bias current of 1pA typical. It provides a push-pull CMOS output stage, eliminating the need for external pull-up resistors. The component has a response time of 2µs typical for 5mV overdrive and an input offset voltage of 5mV maximum at 10V. It is housed in an 8-SOIC package with a temperature range of -40°C to +125°C.

Feature Summary

• Micropower CMOS technology with extremely low consumption of 9µA typical per comparator
• Push-pull CMOS output stage eliminates requirement for external pull-up resistors
• Input common-mode voltage range includes ground potential
• High input impedance of 10^12 ohms typical

Applications

• Signal conditioning circuits requiring low power consumption
• Battery-powered systems utilizing micropower comparators
• General-purpose voltage monitoring applications

Procurement Notes

Verify the specific ordering suffix against official STMicroelectronics documentation to ensure correct packaging and tape specifications. Confirm that the 8-SOIC package variant matches the required PCB footprint and thermal management needs. Cross-reference the RoHS compliance status with current regulatory requirements for the target market. Ensure the operating temperature range meets the environmental conditions of the final application.

Selection Notes

Select this component when a dual comparator with push-pull outputs is needed to replace open-collector bipolar devices like the LM393. It is suitable for designs prioritizing low static current consumption and high input impedance. Consider the 2.7V minimum supply voltage constraint for low-voltage operation. Evaluate the 2µs response time against signal frequency requirements to ensure adequate performance.

Part Context

The TS3702IDT belongs to the TS3702 series of micropower dual CMOS voltage comparators. This series is designed as a low-power alternative to traditional bipolar comparators, offering similar response times with significantly reduced current draw. The device is pin-to-pin and functionally compatible with the dual bipolar LM393, facilitating direct upgrades in existing designs without major circuit modifications.

Replacement Considerations

The TS3702IDT is functionally compatible with the dual bipolar LM393. Designers replacing open-collector comparators should note that the TS3702IDT's push-pull output may require adjustments to pull-up resistor configurations if interfacing with legacy logic levels.