MICROCHIP SY89202UMG-TR

The SY89202U is a precision, high-speed, integrated clock divider LVPECL fanout buffer capable of handling clocks up to 1.5GHz. Optimized for communications applications, the three independently controlled output banks are phase matched and can be configured for pass-through (÷1), ÷2 or ÷4 divide ratios. The differential input includes Micrel’s unique, 3-pin input termination architecture that allows the user to interface to any AC- or DC-coupled signal as small as 100mV (200mVpp) without any level shifting or termination resistor networks in the signal path. The low skew, low jitter outputs are 800mV, 100k compatible LVPECL, with extremely fast rise/fall times guaranteed to be less than 220ps. The EN (enable) input guarantees that the ÷1, ÷2 and ÷4 outputs will start from the same state without any runt pulse after an asynchronous MR (master reset) is asserted. This is accomplished by enabling the outputs after a four-clock delay to allow the counters to synchronize.

• Three low-skew LVPECL output banks with programmable ÷1, ÷2 and ÷4 divider options
• Three independently programmable output banks
• Guaranteed AC performance over temp and voltage:

  • 1.5GHz clock frequency (fMAX)

  • <930ps In-to-Out tpd
  • <220ps tr/tf
• Ultra-low jitter design:
  • <1psRMS random jitter (RJ)
  • <10psPP total jitter (clock)
• Internal input termination
• Patent-pending input termination and VT pin accepts AC- and DC-coupled inputs (CML, PECL, LVDS)
• 800mV LVPECL output swing
• CMOS/TTL-compatible output enable (EN) and divider select control
• Power supply 2.5V±5% or 3.3V±10%
• -40°C to +85°C industrial temperature range
• Available in 32-pin QFN package

• All SONET/SDH channel select applications
• All Fibre Channel multi-channel select applications
• All Gigabit Ethernet multi-channel select applications