• Selects among four differential inputs
• DC-to >3.2Gbps data rate throughput
• <600ps In-to-Out tpd
• <150ps tr/tf
• <1psRMS random jitter
• <10psPP deterministic jitter
• <10psPP total jitter (clock)
• <0.7psRMS crosstalk-induced jitter
• Unique input isolation design minimizes crosstalk
• Internal input termination
• Unique input termination and VTpin accepts DCCoupled and AC-Coupled inputs (LVDS, LVPECL, CML)
• 350mV LVDS output swing
• CMOS/TTL compatible MUX select
• Power supply 2.5V ±5%
• -40°C to +85°C temperature range
• Available in 32-pin (5mm x 5mm) MLF® package

The SY89544U is a fast, low-jitter, 4:1 differential MUX with an LVDS (350mV) compatible output with guaranteed data rate throughput of 3.2Gbps over temperature and voltage.The SY89544U differential inputs include a unique, 3-pin internal termination that allows access to the termination network through a VT pin. This feature allows the device to easily interface to different logic standards, both AC- and DC-coupled without external resistor-bias and termination networks. The result is a clean, stub-free, low-jitter interface solution.The SY89544U operates from a single 2.5V supply and is guaranteed over the full industrial temperature range (-40°C to +85°C). For applications that require a 3.3V supply, consider the SY89545L. For applications that require two differential outputs, consider the SY89546U or SY89547L. The SY89544U is part of Micrel's Precision Edge® product family.