描述 The LMK00301 is a 3-GHz, 10-output differential fanout buffer intended for high-frequency, low-jitter clock/data distribution and level translation. The input clock can be selected from two universal inputs or one crystal input. The selected input clock is distributed to two banks of 5 differential outputs and one LVCMOS output. Both differential output banks can be independently configured as LVPECL, LVDS, or HCSL drivers, or disabled. The LVCMOS output has a synchronous enable input for runt-pulse-free operation when enabled or disabled. The LMK00301 operates 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 it ideal for replacing fixed-output buffer devices while increasing timing margin in the system.特性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 VCC Core Supply: 3.3 V ± 5% 3 Independent VCCO Output Supplies: 3.3 V/2.5 V ± 5% Industrial Temperature Range: –40°C to +85°C 48-lead WQFN (7 mm × 7 mm)