1 Features
1• 1:4 Differential Buffer
• Low Additive Jitter: < 300-fs RMS in 10-kHz to 20-
MHz
• Low Output Skew of 20 ps (Maximum)
• Selectable Divider Ratio 1, /2, /4
• Universal Input Accepts LVDS, LVPECL, and
CML
• 4 LVDS Outputs, ANSI EIA/TIA-644A Standard
Compatible
• Clock Frequency: Up to 800 MHz
• Device Power Supply: 2.375 V to 2.625 V
• Industrial Temperature Range: –40°C to 85°C
• Packaged in 3 mm × 3 mm, 16-Pin VQFN (RGT)
• ESD Protection Exceeds 3-kV HBM, 1-kV CDM

2 Applications
• Telecommunications and Networking
• Medical Imaging
• Test and Measurement Equipment
• Wireless Communications
• General-Purpose Clocking

3 Description
The CDCLVD1213 clock buffer distributes an input
clock to 4 pairs of differential LVDS clock outputs with
low additive jitter for clock distribution. The input can
either be LVDS, LVPECL, or CML.
The CDCLVD1213 contains a high performance
divider for one output (QD) which can divide the input
clock signal by a factor of 1, 2, or 4.
The CDCLVD1213 is specifically designed for driving
50-Ω transmission lines. The part supports a fail-safe
function. The device incorporates an input hysteresis
which prevents random oscillation of the outputs in
the absence of an input signal.
The device operates in 2.5-V supply environment and
is characterized from –40°C to 85°C (ambient
temperature). The CDCLVD1213 is packaged in
small, 16-pin, 3-mm × 3-mm VQFN package.