1 Features
1• 5 LVCMOS Outputs, DC to 200 MHz
• Universal Input
– LVPECL
– LVDS
– HCSL
– SSTL
– LVCMOS and LVTTL
• Crystal Oscillator Interface
– Crystal Input Frequency: 10 to 40 MHz
• Output Skew: 6 ps
• Additive Phase Jitter
– 30 fs at 156.25 MHz (12 kHz to 20 MHz)
• Low Propagation Delay
• Operates With 3.3 or 2.5-V Core Supply Voltage
• Adjustable Output Power Supply
– 1.5 V, 1.8 V, 2.5 V, and 3.3 V for Each Bank
• 24-Pin WQFN Package (4.0 mm × 4.0 mm ×
0.8 mm)

2 Applications
• LO Reference Distribution for RRU Applications
• SONET, Ethernet, Fibre Channel Line Cards
• Optical Transport Networks
• GPON OLT/ONU
• Server and Storage Area Networking
• Medical Imaging
• Portable Test and Measurement
• High-End A/V

3 Description
The LMK00105 is a high-performance, low-noise
LVCMOS fanout buffer which can distribute five ultralow
jitter clocks from a differential, single-ended, or
crystal input. The LMK00105 supports synchronous
output enable for glitch-free operation. The ultra lowskew,
low-jitter, and high PSRR make this buffer
ideally suited for various networking, telecom, server
and storage area networking, RRU LO reference
distribution, medical and test equipment applications.
The core voltage can be set to 2.5 or 3.3 V, while the
output voltage can be set to 1.5, 1.8, 2.5 or 3.3 V.
The LMK00105 can be easily configured through pin
programming.