LMK00308 - Texas Instruments

LMK00308 3-GHz 8-Output Ultra-Low Additive Jitter Differential Clock Buffer/Level Translator

The LMK00308 is a 3-GHz, 8-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 4 differential outputs and one LVCMOS output. Both differential output banks.

Features

•1 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 4 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 ± .