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SY89856UMGTR Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY89856UMGTR Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 11 page SY89856U 2GHz, Low-Power, 1:6 LVPECL Fanout Buffer with 2:1 Input MUX and Internal Termination Precision Edge is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com August 2007 M9999-082907-C hbwhelp@micrel.com or (408) 955-1690 General Description The SY89856U is a 2.5V/3.3V precision, high-speed, 1:6 fanout capable of handling clocks up to 2.0GHz. A differential 2:1 MUX input is included for redundant clock switchover applications. The differential input includes Micrel’s unique, 3-pin input termination architecture that allows the device to interface to any differential signal (AC- or DC-coupled) as small as 100mV (200mVpp) without any level shifting or termination resistor networks in the signal path. The outputs are LVPECL (100k, temperature compensated), with extremely fast rise/fall times guaranteed to be less than 200ps. The SY89856U 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. The SY89856U is part of Micrel’s high-speed, Precision Edge ® product line. All support documentation can be found on Micrel’s web site at: www.micrel.com. Functional Block Diagram Precision Edge ® Features • 6 ultra-low skew copies of the selected input • 2:1 MUX input included for clock switchover applications • Low power: 225mW typical (2.5V) • 2.5V to 3.3V supply voltage • Unique input isolation design minimizes crosstalk • Guaranteed AC performance over temperature and voltage: – Clock frequency range: DC to >2.0GHz – <400ps IN-to-OUT tpd – <200ps tr/tf times – <30ps skew (output-to-output) • Ultra-low jitter design: – <1psRMS random jitter – <10psPP total jitter (clock) – <1psRMS cycle-to-cycle jitter – <0.7psRMS crosstalk-induced jitter • Unique input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS) • 100k LVPECL compatible output swing • –40°C to +85°C industrial temperature range • Available in 32-pin (5mm x 5mm) QFN package Applications • Redundant clock distribution • All SONET/SDH clock/data distribution • All Fibre Channel distribution • All Gigabit Ethernet clock distribution Markets • LAN/WAN • Enterprise servers • ATE • Test and measurement |
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