●The LMK00304 is a 3-GHz 4-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 2 differential outputs and one LVCMOS output. The differential output banks can be mutually 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 LMK00304 operates from a 3.3 V core supply and 3 independent 3.3 V/2.5 V output supplies.
●The LMK00304 provides high performance, versatility, and power efficiency, making it ideal for replacing fixed-output buffer devices while increasing timing margin in the system.
● 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 a 10 to 40 MHz
●Crystal or Single-Ended Clock
● Two Banks with 2 Differential Outputs Each
● LVPECL, LVDS, HCSL, or Hi-Z (Selectable)
● 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
● 32-lead WQFN (5 mm × 5 mm)
