SY58035U

Micrel, Inc. 4.5GHz, 1:6 LVPECL Fanout Buffer WITH 2:1 MUX Input AND INTERNAL TERMINATION Precision Edge® Precision ESdY5g8e0®35U SY58035U FEATURES ■ Provides six ultra-low skew copies of the selected input ■ 2:1 MUX input included for clock switchover applications ■ Guaranteed AC performance over temperature and voltage: Clock frequency range:  DC to > 4.5GHz <320ps IN-to-OUT tpd <110ps tr / tf times <20ps skew (output-to-output) ■ Ultra-low jitter design: 50fsRMS phase jitter (typ) ■ Low supply voltage operation:  2.5V and 3.3V ■ Unique input termination and VT pin accepts DCcoupled and AC-coupled inputs (CML, PECL, LVDS) ■ Unique input isolation design minimizes crosstalk ■ 100K LVPECL compatible output swing ■ –40°C to +85°C temperature range ■ Available in 32-pin (5mm x 5mm) MLF® package DESCRIPTION Precision Edge® The SY58035U is a 2.5V/3.3V precision, high-speed, 1:6 fanout capable of handling clocks up to 4.5GHz. 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 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 110ps. The SY58035U operates from a 2.5V ±5% supply or a 3.3V ±10% supply a...