HMC854LC5

Overview

The HMC854LC5 is a 28 Gbps, 4:1 multiplexer designed for data serialization. It latches four differential inputs on the rising edge of the input clock and uses both edges of the half-rate clock to serialize data. The device features a quarter-rate clock output for synchronization and supports DC coupling for broadband operation. All CML inputs are internally terminated with 50 ohms. The differential outputs are source terminated to 50 ohms and include an adjustable VR pin for output level control. It operates from a single -3.3 V supply within a temperature range of -40 °C to +85 °C.

Feature Summary

• Supports half-rate clock input and provides a dedicated quarter-rate reference clock output for system synchronization.
• Features programmable differential output voltage swing via the VR pin to optimize signal levels or compensate for loss.
• Utilizes fast rise and fall times with low power consumption for efficient high-speed data serialization.
• Accepts DC or AC coupled CML inputs and outputs, allowing direct connection to 50-ohm ground-terminated systems.

Applications

• SONET OC-192
• Broadband Test & Measurement
• Serial Data Transmission up to 28 Gbps
• FPGA Interfacing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the component meets RoHS compliance requirements for your assembly process. Check for any updates regarding the MSL rating and thermal resistance values before finalizing the bill of materials.

Selection Notes

Select this component when a 4:1 multiplexing function is required for serial data rates up to 28 Gbps. Ensure the design accommodates the -3.3 V single supply requirement and the 5x5 mm ceramic package footprint. Consider the programmable output voltage feature if signal integrity optimization across varying channel losses is necessary for the target application.

Part Context

This part belongs to the HMC854 series of high-speed multiplexers manufactured by Analog Devices Inc. (formerly Hittite Microwave). It is categorized under encoders, decoders, muxes, and demuxes. The device is housed in a 32-lead ceramic surface-mount package designed for robust RF performance and thermal management in demanding electronic environments.

Replacement Considerations

HMC854LC5TR-R5