LM193YDT

Overview

The LM193YDT is a dual low-voltage comparator manufactured by STMicroelectronics, belonging to the LM193 family. It features two independent comparators designed for single-supply operation ranging from 2 V to 36 V or split supplies of ±1 V to ±18 V. The device operates with very low supply current of 0.45 mA and includes an input common-mode voltage range that extends to ground. It provides open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic families.

Feature Summary

• Dual independent low-voltage comparators optimized for single-supply applications
• Input common-mode voltage range includes ground potential
• Open-collector output configuration ensuring compatibility with various logic families

Applications

• Battery-powered systems requiring low quiescent current
• Voltage monitoring and level shifting circuits
• General-purpose signal conditioning and waveform generation

Procurement Notes

Verify the specific suffix 'Y' against the official STMicroelectronics datasheet to confirm package type and tape-and-reel specifications. Ensure the ordering code matches the required industrial temperature range and RoHS compliance status. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing circuits that require precise voltage comparison with minimal power consumption. The wide single-supply voltage range allows flexibility in system architecture. Consider the open-collector output requirement for pull-up resistor implementation. Evaluate thermal performance if operating near maximum supply voltage limits.

Part Context

This device is part of the industry-standard LM193/LM393 comparator family, widely used in analog signal processing. It serves as a cost-effective solution for threshold detection and timing applications. The STMicroelectronics version maintains pin-out compatibility with legacy designs while offering modern manufacturing standards and reliability enhancements for contemporary electronic systems.

Replacement Considerations

Compatible substitutes include LM393 variants and other dual comparators with similar pin configurations and electrical characteristics. Verify that replacement parts maintain the same open-collector output structure and input common-mode range specifications to ensure circuit functionality without modification.