Micrel, Inc. Supplier Page
  • Description
  • Features
  • Applications
  • Specifications

Introducing the SY56011R Low Voltage Fanout Buffer

Micrel ImageThe SY56011R is a fully differential, low voltage 1.2V/1.8V/2.5V 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 6.4Gbps.

The differential input includes Micrel’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 200mV (400mV 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 80ps.

The SY56011R operates from a 2.5V ±5% core supply and a 1.2V, 1.8V or 2.5V ±5% output supply and is guaranteed over the full industrial temperature range (–40°C to +85°C). The SY56011R is part of Micrel’s high-speed, Precision Edge® product line.
  • 1.2V/1.8V/2.5V CML 1:2 Fanout Buffer
  • Equalizes 9, 18, 27 inches of FR4
  • Guaranteed AC performance over temperature and voltage:
    • DC-to > 6.4Gbps Data throughput
    • DC-to > 4.5GHz Clock throughput
    • < 280 ps propagation delay ( IN-to-Q)
    • < 15ps within-device skew
    • < 80ps rise/fall times
  • Ultra-low jitter design
    • < 1ps RMS random jitter
  • High-speed CML outputs
  • 2.5V ±5% V CC , 1.2/1.8V/2.5V ±5% V CCO power supply operation
  • Industrial temperature range: –40°C to +85°C
  • Available in 16-pin (3mm x 3mm) MLF® package
  • Click to View Pin Configuration
    Click to view pin configuration
    DatasheetRoHS Compliant
    Data Distribution

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


  • Markets

  • Storage
  • ATE
  • Test and measurement
  • Enterprise networking equipment
  • High-end servers
  • Metro area network equipment
  • Functional Block Diagram
    Click to View Larger

    Click image to view larger

    Digi-Key P/N
    Micrel P/N
    Package Type
    Operating Range
    Package Marking
    Lead Finish
    SY56011R
    MLF-16
    Industrial
    R011 with Pb-Free
    bar-line indicator
    NiPdAu
    Pb-Free


    Absolute Maximum Ratings(1) Operating Ratings(2)
    Supply Voltage (VCC) ........................... –0.5V to +3.0V Supply Voltage (VCC) ............ 2.375V to 2.625V
    Enable Voltage (VEN) ............................ –0.5V to +3.0V                          (VCCO) ............ 1.14V to 2.625V
    VCC – VCCO ....................................................... < 1.8V Ambient Temp. (TA) .................. 1.14V to 2.625V
    Input Voltage (VIN) .................................. –0.5V to VCC Package Thermal Resistance(3)
    CML Output Voltage (VOUT) ...................... 0.6V to 3.0V      MLF®
    Current (VT)           Still-air (ΘJA) ................................. 75°C/W
    Source or sink on VT pin ................................. ±100mA           Junction-to-board (ΨJB) ............... 33°C/W
    Input Current  
    Source or sink Current on (IN, /IN) ..................... ±50mA  
    Maximum operating Junction Temp. ..................... 125°C  
    Lead Temp. (soldering, 20 sec.) ......................... 260°C  
    Storage Temp. (TS) ............................. –65°C to +150°C  
     
    Notes:
    1. Permanent device damage may occur if absolute maximum ratings are exceeded. Exposure to absolute maximum ratings conditions for extended periods may affect device reliability.
    2. Limits are not guaranteed if the device is operated beyond the operating ratings.
    3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB. ΨJB and ΘJA values are determined for a 4-layer board in still-air number, unless otherwise stated.