LM193N

Overview

The LM193N is a dual low voltage comparator manufactured by STMicroelectronics in an 8-DIP plastic package. It operates from a single supply of +2V to +36V or split supplies of ±1V to ±18V. Key electrical characteristics include a typical input bias current of 25nA, input offset voltage of ±1mV, and supply current of 0.4mA at +5V. The device features open-collector outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic. It supports an operating temperature range of -55°C to +125°C.

Feature Summary

• Dual independent comparators designed for wide single-supply operation
• Input common-mode voltage range includes ground potential
• Open-collector outputs compatible with various logic families
• Low power consumption independent of supply voltage

Applications

• Limit comparators
• Simple analog-to-digital converters
• Pulse, square wave, and delay generators
• Wide-range voltage-controlled oscillators (VCO)
• MOS clock timers and multivibrators

Procurement Notes

Verify component authenticity through authorized distributors. Confirm the specific ordering code matches the required temperature grade and package type. Check for RoHS compliance status as indicated in official documentation. Ensure the supplier provides valid traceability records for quality assurance purposes before finalizing acquisition.

Selection Notes

Select this component when low power dissipation and ground-referenced inputs are required. It is suitable for battery-powered applications due to constant low supply current. Consider the DIP-8 package for through-hole prototyping. Verify that the open-collector output configuration aligns with the system's pull-up requirements and logic interface standards.

Part Context

The LM193N belongs to the LMx93 family of low-power dual voltage comparators. This series includes variants like the LM293 and LM393, differentiated primarily by operating temperature ranges. The LM193 specifically covers the military-grade temperature range. These devices share identical pinouts and electrical functions, allowing for flexible design choices based on environmental constraints.

Replacement Considerations

Public confirmed substitute part numbers include LM2903N/NOPB and LM2903P from Texas Instruments.