LMK00301 3-GHz, 10-Output Differential Fanout Buffer / Level Translator | TI.com

LMK00301 (ACTIVE)

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

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

Description

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.

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

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 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

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Parametrics Compare all products in Universal (programmable)

 
Additive RMS Jitter (Typ) (fs)
Output Frequency (Max) (MHz)
Input Level
Number of Outputs
Output Level
VCC (V)
VCC Out (V)
Input Frequency (Max) (MHz)
Operating Temperature Range (C)
LMK00301 LMK00304 LMK00306 LMK00308
51     51     51     51    
3100     3100     3100     3100    
HCSL
LVDS
LVPECL    
LVPECL     CML
HCSL
HSTL
LVCMOS
LVDS
LVPECL
LVTTL
SSTL
XTAL    
CML
HCSL
HSTL
LVCMOS
LVDS
LVPECL
LVTTL
SSTL
XTAL    
11     5     7     9    
HCSL
LVDS
LVPECL    
LVPECL     HCSL
LVCMOS
LVDS
LVPECL    
HCSL
LVCMOS
LVDS
LVPECL    
3.3     3.3     3.3     3.3    
3.3
2.5    
3.3
2.5    
2.5
3.3    
2.5
3.3    
3100     3100     3100     3100    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    

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WEBENCH® Designer LMK00301

Frequency Number of Outputs
 MHz
Output Format