The SY89859UMY is a low jitter, low-power, high-speed 8:1 multiplexer with a 1:2 differential fanout buffer optimized for precision telecom and enterprise server distribution applications. The SY89859UMY distributes clock frequencies from DC to >2.5GHz, and data rates to 2.5Gbps guaranteed over temperature and voltage.The SY89859UMY differential input includes Micrel's unique, 3-pin input termination architecture that directly interfaces to any differential signal (AC- or DC-coupled) as small as 100mV (200mVpp) without level shifting or termination resistor networks in the signal path. The outputs are 800mV, 100K-compatible LVPECL with extremely fast rise/fall time guaranteed to be less than 180ps.The SY89859UMY features a patent-pending isolation design that significantly improves on channel-to-channel crosstalk-induced jitter performance.The SY89859UMY operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89859UMY is part of Micrel's high-speed, Precision Edge® product line.
Feature
- Selects between 1 of 8 inputs, and provides 2 precision, low skew 100K-compatible LVPECL output copies
- Low power: 150mW typ. (2.5V)
- Guaranteed AC performance over temperature and voltage:
- DC to >2.5Gbps
- DC to >2.5GHz
- <690ps propagation delay
- <180ps tr/tf time
- <20ps skew (output-to-output)
- Unique, patent-pending channel-to-channel isolation design provides superior crosstalk performance
- Ultra-low jitter design:
- <1psRMS random jitter
- <10psPP deterministic jitter
- <10psPP total jitter (clock)
- <1psRMS cycle-to-cycle jitter
- <0.7psRMS crosstalk-induced jitter
- Unique, patented input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
- Power supply 2.5V ±5% or 3.3V ±10%
- -40°C to +85°C industrial temperature range
- Available in 44-pin (7mm x 7mm) QFN package
