The HMC854LC5 is a 4:1 multiplexer designed for 28 Gbps data serial applications. The multiplexer latches four differential inputs on the rising edge of the input clock. The device uses the rising and falling edges of a half-rate clock to transmit data serially. An on-chip 1/4 rate clock output signal is generated that can be used to synchronize data with a multiplexer. The multiplexer is DC-coupled and supports wideband operation.
All clock and data inputs of the HMC854LC5 are CML and terminated to the positive supply GND via the on-chip 50 Ω, either DC or AC coupled. The differential output is terminated to 50 Ω and can also be AC or DC coupled. The outputs can be connected directly to a 50-Ω ground-terminated system or via CML logic input drivers. The HMC854LC5 also integrates an output level control pin, VR, which can be used for loss compensation or signal level optimization. The HMC854LC5 operates from a single -3.3V supply and is available in a ROHS-compliant 5x5 mm SMT package.
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- SONET OC-192
- Broadband test and measurement
- Serial data transmission up to 28 Gbps
- Multiplexing mode:
4:1 （28 Gbps NRZ）
2:1 (14 Gbps RZ and NRZ)
- FPGA interface