TS331ICT

Overview

The TS331ICT is a single-channel micropower comparator from STMicroelectronics, part of the TS33x family. It operates on a supply voltage ranging from 1.6 V to 5 V with typical current consumption as low as 20 μA. The device features rail-to-rail inputs and an open-drain output capable of sinking up to 93 mA at 5 V. Key electrical parameters include a maximum propagation delay of 720 ns, input offset voltage of 5 mV at 5 V, and input bias current of 0.04 μA at 5 V. It is housed in a compact SC-70-5 (SOT-353) surface-mount package and is specified for operation across a wide temperature range of -40 °C to +125 °C.

Feature Summary

• Rail-to-rail input capability enables accurate signal detection near supply rails in low-voltage applications.
• Micropower design achieves ultra-low current consumption suitable for battery-operated systems.
• Open-drain output allows flexible interfacing with various logic families through external pull-up selection.

Applications

• Battery-powered portable electronics requiring minimal quiescent current
• Low-voltage signal conditioning and threshold detection circuits
• Space-constrained designs utilizing small SMD packages

Procurement Notes

Verify the specific suffix 'ICT' corresponds to the SC-70-5 tape-and-reel packaging configuration when sourcing. Confirm that the automotive qualification status applies to the base TS331 device family rather than implying every individual lot meets AEC-Q100 standards without explicit documentation. Ensure compatibility with the intended operating temperature range of -40 °C to +125 °C for industrial or automotive environments.

Selection Notes

Select the TS331ICT when system constraints demand both extremely low power consumption and rail-to-rail input performance. It is appropriate for designs where space is limited due to the SC-70-5 footprint. Consider the open-drain output requirement if interfacing with logic levels different from the supply voltage. Compare against the LMV331ICT if a higher minimum supply voltage of 2.7 V is acceptable, as the TS331 offers lower voltage operation starting at 1.6 V.

Part Context

The TS331ICT belongs to the TS33x series, which includes dual (TS332) and quad (TS334) variants. This family is designed for micropower, low-voltage applications. The ICT suffix denotes the specific SC-70-5 surface-mount package type. The component is manufactured by STMicroelectronics and is generally available in tape-and-reel formats for automated assembly.

Replacement Considerations

The LMV331ICT is a related variant within the same manufacturer's portfolio but operates with a minimum supply voltage of 2.7 V, whereas the TS331 supports down to 1.6 V. Verify pinout compatibility and ensure the higher minimum voltage of the alternative does not violate system power constraints.