HMC744LC3TR

Clock Buffers, Drivers Overview

The HMC744LC3TR 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 adjustable between 600 mV and 1100 mV via the VR pin. It is housed in a 16-lead ceramic SMT package.

Clock Buffers, Drivers Feature Summary

• Supports maximum data rates of 14 Gbps and clock frequencies up to 14 GHz
• Features differential CML inputs and outputs with internal 50 Ohm termination
• Includes a programmable output level control pin (VR) for signal optimization
• Operates on a single +3.3 V supply with low power consumption

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 the specific ordering suffix against manufacturer documentation to confirm packaging format. The TR suffix typically indicates tape and reel packaging, while other suffixes may denote cut tape or evaluation board variants. Ensure compatibility with the required moisture sensitivity level (MSL 3) and reflow temperature limits during assembly processes.

Clock Buffers, Drivers Selection Notes

Select this component when a high-speed 1:2 fanout buffer is required for CML signal distribution. The device is suitable for applications needing fast rise and fall times (22/20 ps) and low jitter. Consider the programmable output voltage feature if loss compensation or signal-level optimization is necessary within the design constraints.

Clock Buffers, Drivers Part Context

The HMC744LC3 belongs to the HMC744 series of high-speed digital logic components manufactured by Analog Devices Inc. Originally associated with Hittite Microwave Corporation, these devices are designed for surface-mount technology (SMT) applications requiring robust performance in RF and high-speed digital environments.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative components, particularly regarding CML interface compatibility and operating voltage ranges.

Clock Buffers, Drivers FAQ

How is the output voltage swing controlled?

The output voltage swing is programmable between 600 mV and 1100 mV using the VR pin. Adjusting the voltage applied to this pin allows for signal-level optimization or loss compensation.

What is the input termination configuration?

All differential inputs are terminated internally to 50 Ohms connected to the positive supply (Vcc). These inputs can be either AC or DC coupled.

What is the maximum junction temperature rating?

The maximum junction temperature for the HMC744LC3 is rated at 125 °C.