ASIC

PHY1

PHY2

FPGA

156.25 MHz

CDCLVD 1213

LVDSBuffer

withDivider

DIV

CDCLVD1213

www.ti.com

SCAS897 – JULY 2010

1:4 Low Additive Jitter LVDS Buffer With Divider

Check for Samples: CDCLVD1213

1

FEATURES

DESCRIPTION

•

1:4 Differential Buffer

•

Low Additive Jitter: <300 fs RMS in 10-kHz to

The CDCLVD1213 clock buffer distributes an input

clock to 4 pairs of differential LVDS clock outputs with

20-MHz

low additive jitter for clock distribution. The input can

•

Low Output Skew of 20 ps (Max)

either be LVDS, LVPECL, or CML.

•

Selectable Divider Ratio 1, /2, /4

The CDCLVD1213 contains a high performance

•

Universal Input Accepts LVDS, LVPECL, and

divider for one output (QD) which can divide the input

CML

clock signal by a factor of 1, 2, or 4.

•

4 LVDS Outputs, ANSI EAI/TIA-644A Standard

The CDCLVD1213 is specifically designed for driving

Compatible

50

Ω transmission lines. The part supports a fail safe

•

Clock Frequency up to 800 MHz

function. The device incorporates an input hysteresis

which prevents random oscillation of the outputs in

•

2.375 V–2.625 V Device Power Supply

the absence of an input signal.

•

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

The device operates in 2.5 V supply environment and

•

Packaged in 3 mm × 3 mm 16-Pin QFN (RGT)

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

•

ESD Protection Exceeds 3 kV HBM, 1 kV CDM

temperature). The CDCLVD1213 is packaged in

small 16-pin, 3-mm × 3-mm QFN package.

APPLICATIONS

•

Telecommunications/Networking

•

Medical Imaging

•

Test and Measurement Equipment

•

Wireless Communications

•

General Purpose Clocking

Figure 1. Application Example

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, 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.