HMC676LP3E

Overview

The HMC676LP3E is a SiGe monolithic ultra-fast comparator featuring reduced swing ECL (RSECL) output drivers and latch inputs. It supports 10 Gbps operation with a typical propagation delay of 100 ps and a minimum pulse width of 60 ps. The device exhibits 0.2 ps rms random jitter and typically 10 ps overdrive and slew rate dispersion. It includes resistor-programmable hysteresis and differential latch control, allowing configuration in either latch mode or as a tracking comparator.

Feature Summary

• Features reduced swing ECL output stage designed to drive 400 mV into 50 ohms terminated to -2 V
• Supports high-speed latch operation with programmable hysteresis via external resistor
• Capable of operating in both latch mode and transparent tracking comparator mode

Applications

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

Procurement Notes

Verify component status carefully as the datasheet explicitly marks this part as OBSOLETE. Confirm availability through authorized distributors or check for valid replacement alternatives before finalizing design specifications. Ensure all electrical parameters match current system requirements given the discontinued status.

Selection Notes

Select this component for applications requiring 10 GHz equivalent input bandwidth and low jitter performance. Consider the specific power supply requirements of +3.3 V for the input stage and -3 V for the negative rail. Evaluate the need for latch functionality versus continuous tracking mode based on system timing constraints.

Part Context

This device belongs to the HMC676 series of comparators manufactured by Analog Devices (formerly Hittite Microwave). It is a specialized high-speed analog comparator designed for RF and microwave applications where precise timing and signal integrity are critical.

Replacement Considerations

HMC675LP3E is listed as a similar alternative part number.