• Selects 1 of 4 differential inputs
• Provides two copies of the selected input
• DC-to- >10.7Gbps data rate throughput
• <350ps IN-to-Out tpd
• <60ps tr/ tf times
• <10psPP total jitter (clock)
• <1psRMS random jitter
• <10psPP deterministic jitter
• <0.7psRMS crosstalk-induced jitter
• Unique patended input design minimizes crosstalk
• Accepts an input signal as low as 100mV
• Unique patended input termination and VT pin accepts DC- and AC-coupled inputs (CML, LVPECL, LVDS)
• Internal 50O output source termination
• 400mV CML output swing (RL = 50O)
• Power supply 2.5V ±5% or 3.3V ±10%
• -40°C to +85°C temperature range
• Available in 32-pin (5mm x 5mm) MLF® package

The SY58028U is a 2.5V/3.3V precision, high-speed, 4:1 differential CML multiplexer capable of handling clocks up to 7GHz and data streams up to 10.7Gbps. In addition, a 1:2 fanout buffer provides two copies of the selected inputs.The differential input includes Micrel's unique, 3-pin input termination architecture that allows customers to interface to any differential signal (AC- or DC-coupled) as small as 100mV without any level shifting or termination resistor networks in the signal path. The result is a clean, stub-free, low-jitter interface solution. The outputs are 50Ω source terminated CML, with extremely fast rise/fall times guaranteed to be less than 60ps.The SY58028U operates from a 2.5V ±5% supply or a 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. For applications that require LVPECL outputs, consider the SY58029U or SY58030U Multiplexers. The SY58028U is part of Micrel's high-speed, Precision Edge® product line.