LMV393IST

Overview

The LMV393IST is a single-channel analog comparator manufactured by STMicroelectronics, housed in a MiniSO-8 surface-mount package. It operates within a supply voltage range of 2.7 V to 5 V with a typical quiescent current of 25 µA. The device features an open-drain output capable of sourcing up to 93 mA per channel. Key electrical parameters include a propagation delay of 200 ns, an input offset voltage of 7 mV, and an input bias current of 400 nA. It is designed for operation across a temperature range from -40 °C to +85 °C.

Feature Summary

• Low power consumption suitable for battery-operated systems
• Single-supply operation compatible with low-voltage logic levels
• Open-drain output allows flexible interfacing with various logic families

Applications

• Battery-powered monitoring circuits
• Threshold detection in low-voltage systems
• General-purpose signal comparison tasks

Procurement Notes

Verify the specific suffix IST corresponds to the MiniSO-8 package and commercial temperature grade (-40°C to +85°C) when ordering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the open-drain output requirement, which necessitates an external pull-up resistor for proper high-state logic levels.

Selection Notes

Select this component for applications requiring minimal space due to the MiniSO-8 footprint and low static current draw. It serves as a direct low-voltage replacement for legacy LM393 designs where supply voltages are restricted to 5 V or lower. Consider the 200 ns propagation delay for timing-sensitive signals and ensure the load can be driven by the specified 93 mA open-drain sink capability.

Part Context

This part belongs to the LMV3xx series, representing the low-voltage evolution of the industry-standard LM393 quad comparator. While the standard LM393 typically requires higher supply voltages, the LMV393IST variant is optimized for modern 2.7 V to 5 V systems. It maintains pin compatibility with older generations while offering reduced power dissipation and improved performance in single-supply environments.

Replacement Considerations

LMV393IPWRG4 (Texas Instruments, TSSOP-8), LMV393IDR (Texas Instruments, SOIC-8). Verify package dimensions and thermal characteristics when substituting.