The SY89854U is a 2.5V/3.3V precision, high-speed, fully differential 1:4 LVPECL fanout buffer. Optimized to provide four identical output copies with less than 20ps of skew and less than 10pspp total jitter, the SY89854U can process clock signals as fast as 2GHz.The differential input includes Micrel's unique, patent pending 3-pin input termination architecture that interfaces 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. For AC-coupled input interface applications, an on-board output reference voltage (VREF-AC) is provided to bias the center-tap (VT) pin. The outputs are 800mV LVPECL, with fast rise/fall times guaranteed to be less than 180ps.The SY89854U 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 SY89854U is part of Micrel's high-speed, Precision Edge® product line.
Additional Features
Precision 1:4, LVPECL fanout buffer
Low power: 137mW (2.5V typ)
Guaranteed AC performance over temperature and supply voltage:
DC- to >2GHz Clock fMAX
<340ps tpd
<180ps tr/tf time
<20ps max. skew
Ultra-low jitter design:
<1psrms random jitter
<10pspp deterministic jitter
<10pspp total jitter (clock)
Unique patent pending input termination and VT pin accepts DC-coupled and AC-coupled inputs (CML, PECL, LVDS)
Typical 800mV (100k) LVPECL output swing
Power supply 2.5V ±5% or 3.3V ±10%
Industrial temperature range -40°C to +85°C
Available in ultra-small (3mm x 3mm) 16-pin QFN package
The SY89854U is a 2.5V/3.3V precision, high-speed, fully differential 1:4 LVPECL fanout buffer. Optimized to provide four identical output copies with less than 20ps of skew and less than 10pspp total jitter, the SY89854U can process clock signals as fast as 2GHz.The differential input includes Micrel's unique, patent pending 3-pin input termination architecture that interfaces 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. For AC-coupled input interface applications, an on-board output reference voltage (VREF-AC) is provided to bias the center-tap (VT) pin. The outputs are 800mV LVPECL, with fast rise/fall times guaranteed to be less than 180ps.The SY89854U 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 SY89854U is part of Micrel's high-speed, Precision Edge® product line.
Additional Features
- Precision 1:4, LVPECL fanout buffer
- Low power: 137mW (2.5V typ)
- Guaranteed AC performance over temperature and supply voltage:
- DC- to >2GHz Clock fMAX
- <340ps tpd
- <180ps tr/tf time
- <20ps max. skew
- Ultra-low jitter design:
- <1psrms random jitter
- <10pspp deterministic jitter
- <10pspp total jitter (clock)
- Unique patent pending input termination and VT pin accepts DC-coupled and AC-coupled inputs (CML, PECL, LVDS)
- Typical 800mV (100k) LVPECL output swing
- Power supply 2.5V ±5% or 3.3V ±10%
- Industrial temperature range -40°C to +85°C
- Available in ultra-small (3mm x 3mm) 16-pin QFN package
