HMC874LC3C

Overview

The HMC874LC3C is a SiGe monolithic ultra-fast clocked comparator supporting 20 Gbps operation. It provides a 120 ps clock-to-data output delay and 60 ps minimum pulse width with 0.2 ps rms random jitter. The device features high-speed latches with programmable hysteresis and operates on Vcci = +3.3 V, Vcco = +2.0 V, and Vee = -3 V. Power dissipation is typically 150 mW.

Feature Summary

• Supports 20 Gbps data rates with low propagation delay
• Features resistor-programmable hysteresis for noise immunity
• Includes differential clock control inputs
• Designed to directly drive 50-ohm terminated loads

Applications

• Automated Test Equipment (ATE)
• High Speed Instrumentation
• Digital Receiver Systems
• Pulse Spectroscopy
• Clock & Data Restoration

Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and tape-and-reel specifications. Ensure that power supply sequencing requirements are strictly followed during integration to prevent latch-up or damage. Confirm thermal management strategies align with the specified junction temperature limits and derating curves provided in the datasheet.

Selection Notes

Select this component when applications require precise timing resolution at multi-gigabit speeds. The device is suitable for systems needing direct interfacing with 50-ohm transmission lines without additional buffering. Consider the available RSCML version if complementary outputs are required instead of the standard single-ended configuration provided by this part number.

Part Context

This component belongs to the HMC874 series of ultra-fast comparators manufactured by Analog Devices using SiGe technology. It is designed for high-frequency signal processing where minimal jitter and dispersion are critical. The device integrates a high-speed latch mechanism optimized for clocked comparison operations in demanding RF and microwave environments.

Replacement Considerations

The HMC875LC3C serves as a functional substitute offering RSCML output stages. Verify pin compatibility and electrical parameter alignment before substitution.