LTC6752IUD-3#PBF

Overview

The LTC6752IUD-3#PBF is a single-channel analog comparator from Analog Devices, housed in a 12-lead QFN package. It supports input supply voltages from 2.45V to 5.25V and output supplies down to 1.71V. Key electrical parameters include a typical propagation delay of 2.9ns, rise/fall times of 1.2ns, and a toggle rate up to 280MHz. The device features rail-to-rail inputs, CMOS outputs with ±22mA drive capability, and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Rail-to-rail input stage allows signal common mode voltage to extend beyond both supply rails.
• CMOS outputs provide high current drive capability for direct interfacing with logic devices.
• Low propagation delay combined with low dispersion ensures precise timing accuracy.
• Separate input and output supply options enable compatibility with lower voltage logic levels.

Applications

• Clock and data recovery circuits
• High-speed line receivers
• Time of flight measurements
• Window comparators

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and RoHS compliance. Confirm the I grade matches the required operating temperature range of -40°C to +85°C. Ensure the UD package type aligns with PCB footprint requirements. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Selection Notes

Select this part when separate input and output supplies are needed to interface with 1.8V logic while maintaining high-speed performance. The IUD-3 variant offers shutdown control and latch/hysteresis functionality not present in simpler packages. Consider thermal dissipation requirements due to the small QFN form factor during layout.

Part Context

This component belongs to the LTC6752 family of ultra-high-speed comparators. The family includes variants with different package options such as TSOT-23, SC-70, MSOP, and QFN. The -3 designation specifically denotes the version with separate input/output supplies, shutdown pin, latch/hysteresis control, and complementary outputs.

Replacement Considerations

The datasheet identifies the ADCMP60X family as a direct replacement option. Verify that substitute parts maintain comparable propagation delay and toggle rate specifications for high-frequency applications.