TS331IQT

Overview

The TS331IQT is a single-channel analog comparator from STMicroelectronics, designed for low-voltage and micropower applications. It operates within a supply voltage range of 1.6 V to 5 V, consuming a typical quiescent current of 20 μA. The device features rail-to-rail inputs and an open-drain output capable of sourcing up to 22 mA. Key electrical specifications include a propagation delay of 210 ns, a maximum input offset voltage of 5 mV, and an input bias current of 40 nA. It offers a common-mode rejection ratio of 79 dB and functions reliably across an extended temperature range from -40 °C to +125 °C. The component is housed in a compact DFN-6 surface-mount package.

Feature Summary

• Rail-to-rail input capability enables accurate signal detection in low-voltage systems.
• Open-drain output configuration allows flexible interfacing with various logic families.
• Micropower design ensures minimal energy consumption suitable for battery-operated devices.

Applications

• Battery-powered portable electronics
• Low-voltage signal conditioning circuits
• Temperature sensing interfaces

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's official datasheet to ensure compatibility with your PCB footprint and thermal requirements. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Cross-reference the part number with authorized distributors to validate authenticity and traceability. Ensure storage conditions meet the specified humidity barrier bag requirements to prevent damage before soldering.

Selection Notes

Select this component when system constraints require ultra-low power consumption alongside precise voltage threshold detection. The wide operating voltage range and rail-to-rail inputs make it suitable for direct interfacing with sensors that do not provide full swing outputs. Consider the open-drain output topology if level shifting or wired-OR configurations are necessary within the circuit design.

Part Context

The TS331IQT belongs to the TS33x family of comparators, which includes single (TS331), dual (TS332), and quad (TS334) variants. This family is engineered for space-constrained applications requiring high performance at minimal power levels. The IQT designation specifically identifies the automotive-grade or industrial-grade version packaged in a DFN-6 format, distinguishing it from other package options like SOT-23-5.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the TS332 and TS334 for multi-channel needs. Verify functional equivalence regarding propagation delay and input offset voltage when considering alternative manufacturers' parts. Ensure any replacement maintains the 1.6 V minimum supply voltage requirement and open-drain output characteristics.