LM393PSR

Overview

The LM393PSR is a dual differential comparator manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It operates on a single or dual power supply ranging from 2V to 30V. The device features two independent channels with open-collector outputs compatible with CMOS and TTL logic families. Key electrical specifications include a typical propagation delay of 1.3 microseconds, a maximum input offset voltage of 5mV, and a quiescent current of 2.5mA. It supports a high output sink current of up to 20mA and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Dual-channel differential comparison capability for signal processing applications
• Open-collector output structure ensuring compatibility with various logic families
• Wide single-supply operating voltage range supporting diverse system architectures

Applications

• General-purpose analog signal threshold detection
• Interface circuits between analog sensors and digital logic systems
• Over-voltage and under-voltage monitoring protection circuits

Procurement Notes

Verify the specific suffix PSR indicates tape-and-reel packaging when sourcing components. Confirm that the part number corresponds to the standard LM393 family rather than low-voltage variants like LM393LV. Ensure compliance with RoHS directives as indicated by manufacturer documentation. Cross-reference the datasheet revision date to confirm pinout and electrical characteristics match design requirements before finalizing procurement orders.

Selection Notes

Select this component when a dual comparator solution is required within a compact SOIC-8 footprint. It is suitable for designs needing wide supply voltage flexibility up to 30V. Consider the 1.3µs response time against application speed requirements. Verify that the open-collector output configuration aligns with the pull-up resistor strategy in the target circuit design.

Part Context

This device belongs to the LM393 series of dual comparators produced by Texas Instruments. The series is widely recognized for its general-purpose utility in industrial and consumer electronics. The PSR suffix specifically denotes the reel packaging format used for automated surface-mount assembly processes.

Replacement Considerations

LM393DR: Identical functional specifications with different packaging format (tube vs. reel). LM393APSR: Higher precision variant with reduced input offset voltage specifications.