HMC744LC3CTR

Clock Buffers, Drivers Overview

The HMC744LC3CTR is a 1:2 fanout buffer designed for data transmission rates up to 14 Gbps and clock frequencies as high as 14 GHz. It features internally terminated CML inputs and source-terminated CML outputs, supporting both AC and DC coupling. The device operates from a single +3.3 V supply with typical power consumption of 287 mW. Key electrical parameters include a propagation delay of 120 ps, rise/fall times of 22/20 ps, and a programmable output voltage swing ranging from 600 mV to 1100 mV via the VR pin. It is housed in a 16-lead ceramic SMT package.

Clock Buffers, Drivers Feature Summary

• Supports data rates up to 14 Gbps and clock frequencies up to 14 GHz
• Features internally terminated 50 Ohm CML inputs and source-terminated CML outputs
• Includes a programmable output level control pin (VR) for signal optimization
• Operates on a single +3.3 V supply with typical power consumption of 287 mW

Clock Buffers, Drivers Applications

• RF ATE Applications
• Broadband Test & Measurement
• Serial Data Transmission up to 14 Gbps
• Clock Buffering up to 14 GHz

Clock Buffers, Drivers Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm RoHS compliance status and MSL rating (Level 3) prior to assembly. Ensure proper ESD handling precautions are observed during storage and installation due to the device's sensitivity class.

Clock Buffers, Drivers Selection Notes

Select this component when differential CML signaling is required for high-speed clock distribution or serial data paths. The VR pin allows adjustment of output amplitude to compensate for trace loss. Ensure the design accommodates the 16-VFCQFN exposed pad thermal requirements and provides adequate ground connections for RF performance.

Clock Buffers, Drivers Part Context

The HMC744LC3 belongs to the Hittite/Analog Devices high-speed digital logic family. The 'CTR' suffix indicates the Tape & Reel packaging format. The device utilizes a 16-lead ceramic SMT package with dimensions of 3x3 mm, featuring gold over nickel plating for reliable surface mounting.

Clock Buffers, Drivers Replacement Considerations

HMC744LC3

Clock Buffers, Drivers FAQ

How is the output voltage swing controlled?

The output voltage swing is programmable between 600 mV and 1100 mV by applying a specific voltage to the VR pin.

What are the input termination characteristics?

All differential inputs are terminated internally to 50 Ohms to the positive supply (Vcc).

Can the device support DC coupling?

Yes, both the differential CML inputs and outputs may be AC or DC coupled.