LM293ADT

Overview

The LM293ADT is a dual low-power voltage comparator manufactured by STMicroelectronics, housed in an 8-pin SOIC surface-mount package. It features two independent comparators designed for single-supply operation over a wide voltage range of 3V to 36V, or split supplies. The device offers a typical response time of 1.3μs and draws a supply current of 2.5mA. It supports open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic families. The component operates within a temperature range of -40°C to +105°C.

Feature Summary

• Dual independent low-power voltage comparators optimized for single-supply applications
• Wide operating voltage range supporting both single and split power supplies
• Open-collector output configuration ensuring compatibility with various digital logic families

Applications

• Over-voltage and under-voltage detection circuits
• Temperature sensing and control systems
• Level shifting and logic interface conversion

Procurement Notes

Verify the specific suffix 'ADT' against the manufacturer's official datasheet to confirm the exact package type (SOIC-8) and industrial temperature grade (-40°C to +105°C). Ensure that the open-collector output requirements align with your circuit design, as pull-up resistors are necessary for proper logic level generation. Cross-reference the ordering code with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when designing circuits requiring dual comparators with low power consumption and wide supply voltage flexibility. It is suitable for applications where input common-mode voltage includes ground potential. Consider the 1.3μs response time for speed requirements and ensure the load can drive the open-collector output structure effectively within the specified electrical limits.

Part Context

This part belongs to the LM293 series of analog comparators from STMicroelectronics. It shares functional similarities with the LM393 but is distinguished by its specific industrial temperature rating and packaging variant. The series is widely used in general-purpose signal conditioning and monitoring tasks due to its robustness and compatibility with standard logic interfaces.

Replacement Considerations

The LM393ADT is a verified substitute offering identical functionality with potentially different commercial temperature specifications. Verify thermal performance and pinout compatibility before substitution.