1FEATURES

• 2:16 Differential Buffer

• Low Additive Jitter: <300 fs RMS in

10 kHz to 20 MHz

• Low Output Skew of 55 ps (Max)

• Universal Inputs Accept LVDS, LVPECL,

LVCMOS

• Selectable Clock Inputs Through Control Pin

• 16 LVDS Outputs, ANSI EIA/TIA-644A Standard

Compatible

• Clock Frequency up to 800 MHz

• 2.375–2.625V Device Power Supply

• LVDS Reference Voltage, VAC_REF, Available for

Capacitive Coupled Inputs

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

• Packaged in 7mm × 7mm 48-Pin QFN (RGZ)

• 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 CDCLVD1216 clock buffer distributes one of two

selectable clock inputs (IN0, IN1) to 16 pairs of differential LVDS clock outputs (OUT0, OUT15) with

minimum skew for clock distribution. The

CDCLVD1216 can accept two clock sources into an

input multiplexer. The inputs can either be LVDS,

LVPECL, or LVCMOS.

The CDCLVD1216 is specifically designed for driving

50 Ω transmission lines. If driving the inputs in single ended mode, the appropriate bias voltage (VAC_REF)

should be applied to the unused negative input pin.

The IN_SEL pin selects the input which is routed to

the outputs. If this pin is left open it disables the

outputs (static). 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 2.5 V supply environment and

is characterized from –40°C to 85°C (ambient temperature). The CDCLVD1216 is packaged in

small 48-pin, 7mm × 7mm QFN package.