TS3702CN

Overview

The TS3702CN is a micropower dual CMOS voltage comparator manufactured by STMicroelectronics. It operates within a supply voltage range of 2.7V to 16V (single) or ±1.35V to ±8V (dual). The device features an extremely low typical supply current of 9µA per comparator and an input bias current of 1pA typ. Electrical characteristics include a maximum input offset voltage of 6.5mV, a common-mode rejection ratio of 80dB at 3V, and a high-level output voltage of 2.4V at 3V supply. Response times are specified as 1.5µs typ for low-to-high transitions and 2.2µs typ for high-to-low transitions under 5mV overdrive conditions.

Feature Summary

• Push-pull CMOS output stage eliminates the need for external pull-up resistors
• Extremely low power consumption with 9µA typical supply current per comparator
• High input impedance of 10^12Ω typical with input common-mode voltage including ground
• Pin-to-pin and functionally compatible with bipolar LM393

Applications

• Battery-powered systems requiring low quiescent current
• Threshold detection circuits in industrial control
• Signal conditioning applications utilizing window comparator configurations
• General-purpose voltage monitoring where space savings are critical

Procurement Notes

Verify that the specific order code matches the required temperature range and package type. The TS3702CN designation specifically indicates the commercial grade operating range of 0°C to +70°C housed in a DIP8 plastic tube package. Confirming these identifiers ensures compatibility with the intended environmental conditions and board layout requirements before finalizing procurement.

Selection Notes

Select this component when designing circuits that require direct replacement for LM393 devices while reducing power consumption significantly. The push-pull output capability simplifies design by removing external components typically needed for open-collector outputs. Ensure the application stays within the specified single or dual supply voltage limits and accounts for the 6.5mV maximum input offset voltage in precision threshold applications.

Part Context

This device belongs to the TS3702 family of micropower dual CMOS voltage comparators from STMicroelectronics. It serves as a low-power alternative to traditional bipolar comparators like the LM393. The family includes variants such as the TS3702IN for industrial temperature ranges and TS3702MN for military-grade specifications, all sharing similar electrical performance but differing in thermal endurance and packaging options.

Replacement Considerations

The datasheet explicitly states pin-to-pin and functional compatibility with the bipolar LM393. Designers can substitute existing LM393 designs with the TS3702CN without modifying the PCB footprint or basic circuit topology, benefiting from reduced power draw and eliminated pull-up resistors.