LT1719IS8#PBF

Overview

The LT1719IS8#PBF is a single UltraFast comparator in an 8-lead SOIC package. It operates on a supply voltage range of 2.7V to 6V with a typical propagation delay of 4.5ns at 20mV overdrive and 7ns at 5mV overdrive. The device features rail-to-rail CMOS/TTL compatible outputs, internal hysteresis, and separate input/output power supplies for flexible operation. Quiescent current is typically 4.2mA at 3V. A shutdown mode reduces current consumption to 0.1μA.

Feature Summary

• UltraFast response time optimized for low voltage operation
• Rail-to-rail output directly interfaces to TTL and CMOS logic
• Internal hysteresis ensures stability with slow-moving signals
• Low power shutdown mode extends battery life in portable applications

Applications

• High speed differential line receiver
• Crystal oscillator circuits
• Level translators
• Threshold detectors and discriminators
• Zero-crossing detectors

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging when ordering. Confirm the IS8 designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the SO-8 package dimensions match your PCB footprint requirements. Check for RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component for high-speed single-supply or dual-supply applications requiring fast propagation delays. The SO-8 package allows for separate input and output power rails, accommodating different analog input ranges and output logic levels. Consider the SOT-23 variant if space constraints require a smaller footprint.

Part Context

This part belongs to the LT1719 series of UltraFast comparators manufactured by Analog Devices Inc. (formerly Linear Technology). The series includes dual and quad variants such as the LT1720 and LT1721 for applications requiring multiple channels with similar performance characteristics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.