LM193FKB

Overview

The LM193FKB is a dual differential comparator manufactured by Texas Instruments, characterized for operation from −55°C to +125°C. It operates from single or dual supplies ranging from 2 V to 36 V. Key electrical characteristics include a typical supply current of 0.4 mA per comparator, low input bias current of 25 nA, and low input offset voltage of 2 mV. The device features an open-drain output compatible with TTL, MOS, and CMOS logic levels.

Feature Summary

• Wide supply voltage range supporting single or dual power configurations
• Low power consumption independent of supply voltage
• Open-drain output enables wired-AND functionality
• Input common-mode voltage range includes ground

Applications

• Chemical or gas sensor interfaces
• Desktop PC circuitry
• AC induction motor control systems
• Weigh scale applications

Procurement Notes

Verify the specific ordering suffix and package type against the manufacturer's official orderable addendum. Confirm that the component meets MIL-PRF-38535 requirements if military-grade specifications are necessary for the design. Ensure compatibility with the intended operating temperature range and supply voltage conditions before procurement.

Selection Notes

Select this component when wide supply voltage flexibility and low power consumption are required. The open-drain output allows for flexible logic level interfacing. Consider the thermal resistance and package size constraints associated with the LCCC package when designing the PCB layout for optimal heat dissipation.

Part Context

This part belongs to the LM193-MIL family of dual comparators designed for high reliability and wide temperature operation. It shares functional similarities with the LM293 and LM393 series but offers extended environmental ratings. The FK package provides a leadless ceramic chip carrier option suitable for robust industrial and aerospace environments.

Replacement Considerations

LM193JG