HMC676LC3CTR

Overview

The HMC676LC3CTR is a SiGe monolithic latched comparator with an RSECL output stage, designed for 10 Gbps operation. It features a 10 GHz equivalent input bandwidth and a typical propagation delay of 100 ps. The device supports a minimum pulse width of 60 ps with 0.2 ps rms random jitter. It operates on +3.3 V (Vcci), 0 V (Vcco), and -3 V (Vee) supplies, dissipating 120 mW. The component is housed in a 16-lead 3x3 mm SMT package.

Feature Summary

• Features reduced swing ECL output drivers capable of directly driving 400 mV into 50 ohms terminated to -2 V.
• Includes differential latch control inputs allowing configuration as either a tracking or latched comparator.
• Supports resistor-programmable hysteresis via the HYS pin for adjustable threshold stability.

Applications

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

Procurement Notes

Verify the specific suffix 'CTR' against the manufacturer's official documentation to confirm tape-and-reel packaging availability. Confirm RoHS compliance status through the current datasheet revision. Ensure the ordering part number matches the exact voltage and package specifications required for your design implementation.

Selection Notes

Select this component when high-speed signal comparison with precise timing characteristics is required. The integrated latch functionality allows for data holding, making it suitable for applications requiring snapshot comparisons. Verify that the system power supply rails match the specified +3.3 V, 0 V, and -3 V requirements for optimal performance.

Part Context

This device belongs to the HMC676 series of ultra-fast comparators manufactured by Analog Devices Inc. It utilizes SiGe technology to achieve high bandwidth and low jitter performance. The component is part of a family of high-speed logic and comparator ICs designed for broadband communication and instrumentation systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for obsolescence notices or direct replacements if this specific variant is discontinued.

FAQ

How is the comparator configured for Latch Mode?

Latch Mode is selected by setting the differential latch enable inputs (LE - LE_bar) to HI. In this mode, the output holds the logical value of the comparison result just prior to the latch enable transition.

What is the function of the HYS pin?

The HYS pin controls the hysteresis level. It should be left disconnected for zero hysteresis or connected to Vee with a resistor to add the desired amount of hysteresis.