TS332IST

Overview

The TS332IST is a dual-channel micropower analog comparator manufactured by STMicroelectronics. It operates within a supply voltage range of 1.6 V to 5 V, consuming a typical current of 20 μA. The device features rail-to-rail inputs and an open-drain output capable of sourcing 22 mA per channel. Key electrical parameters include a propagation delay of 210 ns, an input offset voltage of 5 mV, and an input bias current of 40 nA. It is housed in a MiniSO-8 surface-mount package and supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Rail-to-rail input capability for low-voltage applications
• Micropower consumption with 20 μA typical current draw
• Open-drain output configuration with low saturation voltage
• Automotive qualified reliability with high ESD tolerance

Applications

• Battery-powered portable electronics
• Signal conditioning circuits
• Window comparator configurations
• Low-voltage threshold detection systems

Procurement Notes

Verify the specific ordering suffix IST corresponds to the MiniSO-8 package and reel/cut-tape availability. Confirm RoHS compliance status through official documentation. Ensure the component matches the automotive qualification requirements if applicable to your design. Cross-reference the datasheet revision date to guarantee parameter accuracy before finalizing procurement.

Selection Notes

Select this component when system constraints require low power consumption alongside rail-to-rail input compatibility. The open-drain output necessitates an external pull-up resistor, which must be accounted for in the circuit design. Consider the 210 ns propagation delay against application speed requirements. The wide temperature range makes it suitable for harsh environments where standard commercial grade parts may fail.

Part Context

The TS332IST belongs to the TS33x family of micropower comparators, which includes single (TS331) and quad (TS334) variants. This family shares common characteristics such as low voltage operation and small SMD packages. The dual-channel configuration provides two independent comparators in one package, optimizing board space compared to using separate single-channel devices.

Replacement Considerations

Direct functional substitutes within the same family include the TS331 (single channel) and TS334 (quad channel). For pin-compatible alternatives, verify other dual-channel comparators with similar supply ranges and open-drain outputs. Ensure any replacement maintains the required 20 μA current consumption and 1.6 V minimum operating voltage.