1FEATURES

• Dual 1:6 Differential Buffer

• Low Additive Jitter: <300 fs rms

in 10 kHz – 20 MHz

• Low Within Bank Output Skew of 45 ps (Max)

• Universal Inputs Accept LVDS, LVPECL,

LVCMOS

• One Input Dedicated for Six Outputs

• Total of 12 LVDS Outputs, ANSI EIA/TIA-644A

Standard Compatible

• Clock Frequency up to 800 MHz

• 2.375–2.625 V Device Power Supply

• LVDS Reference Voltage, VAC_REF, Available for

Capacitive Coupled Inputs

• Industrial Temperature Range –40°C to 85°C

• Packaged in 6 mm x 6 mm 40-pin QFN (RHA)

• ESD Protection Exceeds 3-kV HBM, 1-kV CDM

APPLICATIONS

• Telecommunications/Networking

• Medical Imaging

• Test and Measurement Equipment

• Wireless Communications

• General Purpose Clocking

DESCRIPTION

The CDCLVD2106 clock buffer distributes two clock

inputs (IN0, IN1) to a total of 12 pairs of differential

LVDS clock outputs (OUT0, OUT11). Each buffer

block consists of one input and 6 LVDS outputs. The

inputs can either be LVDS, LVPECL, or LVCMOS.

The CDCLVD2106 is specifically designed for driving

50-Ω transmission lines. In case of driving the inputs

in single ended mode, the appropriate bias voltage

(VAC_REF) should be applied to the unused negative

input pin.

Using the control pin (EN), outputs can be either

disabled or enabled. If the EN pin is left open two

buffers with all outputs are enabled, if switched to a

logical 0 both buffers with all outputs are disabled

(static logical 0), if switched to a logical 1, one

buffer with six outputs is disabled and another buffer

with six outputs is enabled. The part supports a fail

safe function. It incorporates an input hysteresis,

which prevents random oscillation of the outputs in

absence of an input signal.

The device operates in 2.5V supply environment and

is characterized from –40°C to 85°C (ambient

temperature). The CDCLVD2106 is packaged in

small 40-pin, 6-mm × 6-mm QFN package.