SY56011R Low Voltage Fanout Buffer

Low voltage 1.2 V/1.8 V/2.5 V CML 1:2 fanout buffer with input equalization from Microchip

Micrel's SY56011R Low Voltage Fanout BufferThe SY56011R is a fully differential, low voltage 1.2 V/1.8 V/2.5 V CML 1:2 Fanout Buffer with input equalization. The SY56011R can process clock signals as fast as 4.5 GHz or data patterns up to 6.4 Gbps.

The differential input includes Microchip’s unique, 3-pin input termination architecture that interfaces to CML differential signals, without any level-shifting or termination resistor networks in the signal path. The differential input can also accept AC-coupled LVPECL and LVDS signals. Input voltages as small as 200 mV (400 mV pp) are applied before the 9", 18" or 27" FR4 transmission line. For AC-coupled input interface applications, an internal voltage reference is provided to bias the VT pin. The outputs are CML, with extremely fast rise/fall times guaranteed to be less than 80 ps.

The SY56011R operates from a 2.5 V ±5% core supply and a 1.2 V, 1.8 V or 2.5 V ±5% output supply and is guaranteed over the full industrial temperature range (-40°C to +85°C). The SY56011R is part of Microchip’s high-speed, Precision Edge® product line.

Features Applications
  • 1.2 V/1.8 V/2.5 V CML 1:2 Fanout Buffer
  • Equalizes 9, 18, 27 inches of FR4
  • Guaranteed AC performance over temperature and voltage:
    • DC-to > 6.4 Gbps Data throughput
    • DC-to > 4.5 GHz Clock throughput
    • < 280 ps propagation delay ( IN-to-Q)
    • < 15 ps within-device skew
    • < 80 ps rise/fall times
  • Ultra-low jitter design
    • < 1ps RMS random jitter
  • High-speed CML outputs
  • 2.5 V ±5% V CC , 1.2 V/1.8 V/2.5 V ±5% V CCO power supply operation
  • Industrial temperature range: -40°C to +85°C
  • Available in 16-pin (3 mm x 3 mm) MLF® package

Data Distribution

  • SONET clock and data distribution
  • Fibre Channel clock and data distribution
  • Gigabit Ethernet clock and data distribution


  • Storage
  • ATE
  • Test and measurement
  • Enterprise networking equipment
  • High-end servers
  • Metro area network equipment


ImageManufacturer Part NumberDescriptionAvailable Quantity
SY56011RMG datasheet linkIC CLK BUFFER 1:2 4.5GHZ 16MLFSY56011RMGIC CLK BUFFER 1:2 4.5GHZ 16MLF467 - Immediate
SY56011RMG product page link
Published: 2008-12-16