LMK00301 - 3-GHz, 10-Output Differential Fanout Buffer / Level Translator

The LMK00301 is a 3-GHz, 10-output differential fanout buffer intended forhigh-frequency, low-jitter clock/data distribution and level translation. The input clock can beselected from two universal inputs or one crystal input. The selected input clock is distributed totwo banks of 5 differential outputs and one LVCMOS output. Both differential output banks can beindependently configured as LVPECL, LVDS, or HCSL drivers, or disabled. The LVCMOS output has asynchronous enable input for runt-pulse-free operation when enabled or disabled. The LMK00301operates from a 3.3 V core supply and 3 independent 3.3 V/2.5 V output supplies.

The LMK00301 provides high performance, versatility, and power efficiency, making itideal for replacing fixed-output buffer devices while increasing timing margin in thesystem.

The LMK00301A is nearly identical to the LMK00301, but does not have power supplysequencing requirements between the core and output supply domains.

• 3:1 Input Multiplexer
  • Two Universal Inputs Operate up to 3.1 GHz and Accept LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or Single-Ended Clocks
  • One Crystal Input Accepts 10 to 40 MHz Crystal or Single-Ended Clock
• Two Banks With 5 Differential Outputs Each
  • LVPECL, LVDS, HCSL, or Hi-Z (Selectable Per Bank)
  • LVPECL Additive Jitter with LMK03806 Clock Source at 156.25 MHz:
    • 20 fs RMS (10 kHz to 1 MHz)
    • 51 fs RMS (12 kHz to 20 MHz)
• High PSRR: -65/-76 dBc (LVPECL/LVDS) at 156.25 MHz
• LVCMOS Output with Synchronous Enable Input
• Pin-Controlled Configuration
• V_CC Core Supply: 3.3 V ± 5%
• 3 Independent V_CCO Output Supplies: 3.3 V/2.5 V ± 5%
• Industrial Temperature Range: -40°C to +85°C

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