CDCLVD1216

LVDSBuffer

IN_ SEL

PHY2

PHY2

PHY2

PHY2

125 MHz

125 MHz

Oscillator

2

PHY2

PHY2

PHY2

PHY16

CDCLVD1216

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SCAS900B – OCTOBER 2010 – REVISED JANUARY 2011

2:16 Low Additive Jitter LVDS Buffer

Check for Samples: CDCLVD1216

1

FEATURES

DESCRIPTION

•

2:16 Differential Buffer

•

Low Additive Jitter: <300 fs RMS in

The CDCLVD1216 clock buffer distributes one of two

selectable clock inputs (IN0, IN1) to 16 pairs of

10 kHz to 20 MHz

differential LVDS clock outputs (OUT0, OUT15) with

•

Low Output Skew of 55 ps (Max)

minimum

skew

for

clock

distribution.

The

•

Universal Inputs Accept LVDS, LVPECL,

CDCLVD1216 can accept two clock sources into an

LVCMOS

input multiplexer. The inputs can either be LVDS,

LVPECL, or LVCMOS.

•

Selectable Clock Inputs Through Control Pin

•

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

The CDCLVD1216 is specifically designed for driving

Compatible

50

Ω transmission lines. If driving the inputs in single

•

Clock Frequency up to 800 MHz

should be applied to the unused negative input pin.

•

2.375–2.625V Device Power Supply

The IN_SEL pin selects the input which is routed to

•

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

Capacitive Coupled Inputs

outputs (static). The part supports a fail safe function.

•

Industrial Temperature Range –40°C to 85°C

It incorporates an input hysteresis, which prevents

random oscillation of the outputs in absence of an

•

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

input signal.

•

ESD Protection Exceeds 3 kV HBM, 1 kV CDM

The device operates in 2.5 V supply environment and

APPLICATIONS

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

temperature). The CDCLVD1216 is packaged in

•

Telecommunications/Networking

small 48-pin, 7mm × 7mm QFN package.

•

Medical Imaging

•

Test and Measurement Equipment

•

Wireless Communications

•

General Purpose Clocking

Figure 1. Application Example

1

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PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.