LM393AWDT

Overview

The LM393AWDT is a dual low-voltage comparator manufactured by STMicroelectronics, housed in an 8-WSON surface-mount package. It operates from a single supply voltage ranging from 2 V to 36 V or split supplies of ±1 V to ±18 V. The device features an open-collector output capable of sinking up to 18 mA and includes internal ESD protection rated at 2 kV HBM on all pins. Designed for wide temperature operation, it functions reliably between -40°C and +85°C with a maximum quiescent current of 0.45 mA.

Feature Summary

• Dual independent comparators designed for single-supply operation with input common-mode voltage range including ground
• Internal electrostatic discharge (ESD) protection providing 2 kV Human Body Model robustness on all pins
• Open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic families

Applications

• Smart and sport watch signal conditioning circuits
• Overvoltage and undervoltage detection systems
• Window comparator configurations for threshold monitoring

Procurement Notes

Verify the specific suffix 'A' indicates automotive qualification status and confirm the 'WDT' designation corresponds to the WSON-8 package variant. Ensure the selected component meets the required -40°C to +85°C operating temperature range for your application environment. Cross-reference the manufacturer's official datasheet for the LM393 series to validate pinout compatibility and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when designing space-constrained portable electronics requiring high ESD immunity and low power consumption. The wide single-supply voltage range makes it suitable for battery-powered devices operating down to 2 V. Consider the open-collector output requirement for external pull-up resistors when interfacing with different logic voltage levels in mixed-signal systems.

Part Context

This part belongs to the LM393 family of low-power dual voltage comparators. The 'A' prefix typically denotes extended industrial or automotive temperature ranges compared to standard commercial variants. The 'WDT' suffix identifies the specific WSON-8 surface-mount packaging, distinguishing it from SOIC or TSSOP alternatives within the same functional family.

Replacement Considerations

Compatible substitutes include the LM393DT and LM393PT from STMicroelectronics, though these may differ in package type and temperature rating. Other industry-standard equivalents such as the LM193 or LM293 offer similar functionality but require verification of pinout and electrical parameter alignment.