2:1 Differential-to-3.3V Dual LVPECL/ECL Clock Multiplexer

The 85356 is a dual 2:1 Differential-to-LVPECL Multiplexer. Thedevice has both common select and individual select inputs. WhenCOM_SEL is logic High, the CLKxx input pairs will be passed to theoutput. When COM_SEL is logic Low, the output is determined bythe setting of the SEL0 pin for channel 0 and the SEL1 pin forChannel 1. The differential input has a common mode range that can acceptmost differential input types such as LVPECL, LVDS, LVHSTL,SSTL, and HCSL. The 85356 can therefore be used as a differentialtranslator to translate almost any differential input type to LVPECL. Itcan also be used in ECL mode by setting VCC = 0V and VEE to -3.0Vto - 3.8V. The 85356 adds negligible jitter to the input clock and can operate athigh frequencies in excess of 900MHz thus makingit ideal for use in demanding applications such as SONET,Fibre Channel, 1 Gigabit/10 Gigabit Ethernet.

• High speed differential muliplexer. The device can be configured as a 2:1 multiplexer
• Dual 3.3V LVPECL outputs
• Selectable differential CLKx/nCLKx input pairs
• Differential CLKx/nCLKx pairs can accept the following interface levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
• Output frequency: 900MHz (typical)
• Translates any single-ended input signal to 3.3V LVPECL levels with resistor bias on nCLKx input
• Output skew: 75ps (typical)
• Propagation delay: 1.15ns (typical)
• LVPECL mode operating voltage supply range:
  • VCC = 3V to 3.8V, VEE = 0V
• ECL mode operating voltage supply range:
  • VCC = 0V, VEE = -3V to -3.8V
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package