LM193J/883

Overview

The LM193J/883 is a dual precision voltage comparator manufactured by Texas Instruments, designed for single or split power supply operation. It features an input common-mode voltage range that includes ground and a differential input voltage range equal to the supply voltage. The device offers low power supply current drain independent of voltage magnitude and outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic systems. It operates within a temperature range of -55°C to +125°C.

Feature Summary

• Radiation guarantee with Total Ionizing Dose up to 100 krad(Si) and ELDRS-free performance
• Input common-mode voltage range includes ground even on single supplies
• Differential input voltage range equals the full supply voltage
• Output saturation voltage as low as 250 mV at 4 mA sink current

Applications

• Limit comparators
• Simple analog to digital converters
• Pulse, squarewave and time delay generators
• Wide range VCOs
• MOS clock timers

Procurement Notes

Verify the specific ordering suffix against the Package Option Addendum to confirm the package type (CDIP or TO-99) and radiation qualification status. Ensure the procurement channel provides traceability documentation required for MIL-STD-883 compliance. Confirm RoHS exemption status if applicable to your assembly process requirements.

Selection Notes

Select this component when high precision offset voltage specifications are critical for signal comparison tasks. The wide differential input voltage capability allows interfacing with signals exceeding the positive supply rail without damage. Verify that the open-collector output configuration aligns with the system's pull-up resistor strategy and logic level requirements.

Part Context

This device belongs to the LM193 series of low power, low offset voltage dual comparators. It is distinct from commercial variants like the LM393 by offering guaranteed radiation tolerance and adherence to military quality standards. The /883 suffix indicates compliance with MIL-STD-883 testing methods for semiconductor integrated circuits.

Replacement Considerations

Direct replacements include LM193A/883 and LM193QML variants. Verify pinout compatibility and ensure the substitute meets the same radiation hardness and temperature range requirements.