TS339CDT

Overview

The TS339CDT is a micropower quad CMOS voltage comparator manufactured by STMicroelectronics. It features four independent channels in a 14-SOIC package with open-drain outputs. The device operates on a single supply 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 response time of 1.5 μs for 5 mV overdrive, and an input offset voltage of 5 mV. It supports output currents up to 20 mA and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Micropower CMOS architecture providing extremely low consumption compared to bipolar equivalents
• Open-drain output configuration compatible with various logic families
• Input common-mode voltage range includes ground potential
• High input impedance characteristic suitable for sensitive signal conditioning

Applications

• Battery-powered systems requiring low quiescent current
• Temperature sensing circuits utilizing thermistors or RTDs
• Window comparator configurations for voltage monitoring
• General-purpose analog signal comparison tasks

Procurement Notes

Verify the specific suffix 'DT' corresponds to the SOIC-14 tape-and-reel packaging format required for automated assembly processes. Confirm that the industrial temperature grade (-40°C to +125°C) meets the operational environmental specifications of the target application. Ensure compatibility with standard surface-mount placement equipment given the 14-SOIC form factor.

Selection Notes

Select this component when design constraints demand low power consumption alongside high input impedance. The open-drain output allows flexible interfacing with different voltage levels through external pull-up resistors. Consider the 1.5 μs response time for applications where moderate speed is acceptable. Verify that the 20 mA sink capability suffices for driving downstream loads without additional buffering stages.

Part Context

The TS339CDT belongs to the TS339 series of micropower comparators. It serves as a CMOS alternative to traditional bipolar devices like the LM339, offering significantly reduced current draw while maintaining similar performance characteristics. The device is part of STMicroelectronics' portfolio of linear integrated circuits designed for efficient signal processing in portable and battery-operated electronics.

Replacement Considerations

The TS339CDT is pin-to-pin and functionally compatible with the bipolar LM339 device. Designers replacing LM339 units should verify that the lower supply current and CMOS input characteristics align with existing circuit biasing requirements.