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K00308 Datasheet PDF - Texas Instruments

Part NumberK00308 TI
Texas Instruments TI
Description3-GHz 8-Output Ultra-Low Additive Jitter Differential Clock Buffer/Level Translator
K00308 Datasheet PDF : K00308 pdf   
LMK00308 image

Description
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 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 LMK00308 operates from a 3.3 V core supply and 3 independent 3.3 V/2.5 V output supplies.
The LMK00308 provides high performance, versatility, and power efficiency, making it ideal for replacing fixed-output buffer devices while increasing timing margin in the system.

Features
• 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 ± 5%
• 3 Independent VCCO Output Supplies: 3.3 V/2.5 V
   ± 5%
• Industrial Temperature Range: -40°C to +85°C
• 40-lead WQFN (6 mm × 6 mm)

Applications
• Clock Distribution and Level Translation for ADCs,
   DACs, Multi-Gigabit Ethernet, XAUI, Fibre
   Channel, SATA/SAS, SONET/SDH, CPRI, High
   Frequency Backplanes
• Switches, Routers, Line Cards, Timing Cards
• Servers, Computing, PCI Express (PCIe 3.0)
• Remote Radio Units and Baseband Units

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