LT1715CMS#PBF

Overview

The LT1715CMS#PBF is a dual comparator from Analog Devices featuring independent input and output power supplies. It operates within a supply voltage range of 2.7V to 12V for the input stage and 2.7V to 6V for the output stage. The device provides a propagation delay of 4ns at 20mV overdrive and supports a maximum toggle frequency of 150MHz. It includes internal hysteresis with specified limits, rail-to-rail outputs compatible with TTL and CMOS logic, and an input voltage range extending 100mV below the negative rail. Packaged in a 10-lead MSOP, it is specified for operation from 0°C to 70°C.

Feature Summary

• UltraFast performance with 4ns propagation delay and 150MHz toggle frequency
• Separate input and output power supplies allow independent analog and digital voltage levels
• Internal hysteresis ensures stable operation with slow-moving or noisy signals
• Rail-to-rail outputs directly interface with standard TTL and CMOS logic families

Applications

• High speed differential line receivers
• Level translators
• Window comparators
• Crystal oscillator circuits
• Threshold detectors and discriminators

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the CMS designation corresponds to the commercial temperature range of 0°C to 70°C rather than industrial or extended grades. Ensure the 10-lead MSOP package footprint matches the target PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when high-speed signal comparison is required alongside flexible power supply configurations. The independent supply pins are critical for applications needing distinct analog input ranges and digital output logic levels without performance loss. Consider the internal hysteresis for noise immunity in threshold detection scenarios where external components should be minimized.

Part Context

This part belongs to the LT1715 family of UltraFast dual comparators optimized for low voltage operation. It shares architectural similarities with the LT1720/LT1721 for single-supply needs and the LT1719 for single-channel applications. The design prioritizes minimizing parasitic effects through a pinout that shields sensitive inputs from outputs using power rails.

Replacement Considerations

Public confirmed substitute part numbers: LT1715IMS#PBF, LT1715HMS#PBF.