The NB6LQ572 is a high performance differential 4:1 Clock/Data input multiplexer and a 1:2 LVPECL Clock / Data fanout buffer that operates up to 5 GHz / 6.5Gbps respectively with a 2.5V or 3.3V power supply. Each INx / INxb input pair incorporates a fixed Equalizer Receiver, whichwhen placed in series with a Clock / Data path, will enhance the degraded signal transmitted across an FR4 backplane or cable interconnect. For applicationsthat do not require Equalization, consider the NB7L572, which is pin-compatible to the NB6LQ572. The differential Clock / Data inputs have internal 50-ohm termination resistors and will accept differential LVPECL, CML, or LVDS logic levels. The NB6LQ572 incorporates a pair of Select pins that will choose one of four differential inputs and will produce two identical LVPECL output copies ofClock or Data.As such, the NB6LQ572 is ideal for SONET, GigE, Fiber Channel, Backplane and other Clock/Data distribution applications. The two differential LVPECL outputs will swing 750mV when externally loaded and terminated with a50-ohm resistor to VCC-2V and are optimized for low skew and minimal jitter. The NB6LQ572 is offered in a low profile 5x5mm 32-pin QFN Pb-free package. Application notes, models, and support documentation are available at www.onsemi.com. The NB6LQ572 is a member of the ECLinPS MAX family of high performance clock products.

• Input Data Rate > 6.5Gb/s Typical
• Data Dependent Jitter
• Maximum Input Clock Frequency > 5 GHz Typical,
• Random Clock Jitter
• Fixed Input Equalization
• Low Skew 1:2 LVPECL Outputs,
• 4:1 Multi-Level Mux Inputs, accepts LVPECL, CML, LVDS
• 55ps Typical Rise and Fall Times
• Differential LVPECL Outputs, 800 mV peak-to-peak, typical
• Operating Range: VCC = 2.375 V to 3.6 V
• Internal 50-ohm Input Termination Resistors
• VREFAC Reference Output
• -40C to +85C Ambient Operating Temperature