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.