HMC857LC5TR

Overview

The HMC857LC5TR is a 2x2 crosspoint switch designed for data transmission rates up to 14 Gbps and selector port operation up to 14 GHz. It operates from a single -3.3 V supply with typical power consumption of 345 mW. The device features CML inputs terminated on-chip with 50 Ohms, supporting both DC and AC coupling. Outputs can drive 50 Ohm ground-terminated systems or CML logic devices. Key electrical parameters include a propagation delay of 117 ps, rise/fall times of 21 ps, and programmable differential output voltage swing ranging from 475 to 1200 mVp-p via the VR pin.

Feature Summary

• Supports high-speed data transmission up to 14 Gbps
• Features programmable output voltage level control for signal optimization
• Provides flexible routing between differential inputs and outputs

Applications

• SONET OC-192 and 10 GbE
• 16G Fiber Channel
• Networking & Storage
• Dual 2:1 Selector
• 1:2 Fanout with Input Mux

Procurement Notes

Verify the specific suffix LC5TR against official documentation to confirm package type and reel specifications. Confirm RoHS compliance status through manufacturer datasheets. Ensure compatibility with -3.3 V single supply requirements and verify thermal management needs for the SMT package in the target application environment.

Selection Notes

Select this component when a 2x2 crosspoint topology is required for high-speed digital signals. Consider the programmable output voltage feature if loss compensation or signal level adjustment is necessary. Verify that the system supports CML logic levels and 50 Ohm termination requirements for both input and output interfaces.

Part Context

The HMC857LC5 belongs to the HMC857 series of analog and digital crosspoint ICs manufactured by Analog Devices (formerly Hittite Microwave Corporation). It is housed in a 32-lead ceramic SMT package measuring 5 x 5 mm. The device is part of the high-speed logic product line intended for demanding communication and networking applications.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Verify functional equivalence regarding data rate, supply voltage, and package dimensions before substitution.