LM393TL

Overview

The LM393TL is a dual precision voltage comparator manufactured by Texas Instruments, housed in an 8-pin μSMD surface-mount package. It features two independent channels with open-collector outputs and operates on single or dual power supplies ranging from 2V to 36V (±1V to ±18V). Key electrical specifications include a maximum input offset voltage of 9000 µV, a typical response time of 1.3µs, and a low supply current drain of approximately 0.4mA. The device supports input common-mode voltages that include ground.

Feature Summary

• Dual independent precision voltage comparators designed for wide-range single or split power supply operation
• Open-collector output configuration compatible with TTL, CMOS, and MOS logic systems
• Input common-mode voltage range includes ground, enabling sensing near the negative rail

Applications

• Limit comparators and simple analog-to-digital converters
• Pulse, squarewave, and time delay generators
• Wide range VCO and MOS clock timers

Procurement Notes

Verify the specific suffix 'TL' against official Texas Instruments documentation to confirm the exact package type and temperature rating. Ensure compatibility with the required PCB footprint for the μSMD-8 form factor. Confirm RoHS compliance status as indicated in manufacturer records before finalizing procurement orders.

Selection Notes

Select this component when dual-channel comparison is required within a compact surface-mount design. It is suitable for battery-operated applications due to its low power supply current drain. Ensure external pull-up resistors are included in the circuit design to utilize the open-collector outputs effectively across different logic voltage levels.

Part Context

The LM393 series consists of dual differential comparators designed specifically for single-supply operation over a wide voltage range. This family allows direct interfacing with various logic families while maintaining low power consumption. The device eliminates the need for dual supplies in many standard comparator applications.

Replacement Considerations

LM2903: Industrial grade version with extended temperature range. LM193: Military grade variant. Verify pinout and electrical characteristics match requirements before substitution.