CDCM1802

S0

S1

EN

Setting for Mode 4:

S1 = 0

S0 = 1

IN, IN

Y0,Y0

250 MHz

Y1

125 MHz

125 MHz

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CDCM1802

SCAS759B – APRIL 2004 – REVISED NOVEMBER 2015

CDCM1802 Clock Buffer With Programmable Divider,

LVPECL I/O + Additional LVCMOS Output

1 Features

3 Description

The CDCM1802 clock driver distributes one pair of

1

•

Distributes One Differential Clock Input to One

differential clock input to one LVPECL differential

LVPECL Differential Clock Output and One

clock output pair, Y0 and Y0, and one single-ended

LVCMOS Single-Ended Output

LVCMOS output, Y1. It is specifically designed for

•

Programmable Output Divider for Both LVPECL

driving 50-

Ω transmission lines. The LVCMOS output

and LVCMOS Outputs

is delayed by 1.6 ns over the PECL output stage to

minimize noise impact during signal transitions.

•

1.6-ns Output Skew Between LVCMOS and

LVPECL Transitions Minimizing Noise

The CDCM1802 has two control pins, S0 and S1, to

•

3.3-V Power Supply (2.5-V Functional)

select different output mode settings. The S[1:0] pins

are 3-level inputs. Additionally, an enable pin EN is

•

Signaling Rate Up to 800-MHz LVPECL and

provided

to

disable

or

enable

all

outputs

200-MHz LVCMOS

simultaneously. The CDCM1802 is characterized for

•

Differential Input Stage for Wide Common-Mode

operation from

−40°C to 85°C.

Range Also Provides VBB Bias Voltage Output for

For single-ended driver applications, the CDCM1802

Single-Ended Input Signals

provides a VBB output pin that can be directly

•

Receiver Input Threshold ±75 mV

connected to the unused input as a common-mode

•

16-Pin VQFN Package (3.00 mm × 3.00 mm)

voltage reference.

Device Information(1)

2 Applications

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Networking and Data Communications

CDCM1802

VQFN (16)

3.00 mm × 3.00 mm

•

Medical Imaging

(1) For all available packages, see the orderable addendum at

•

Portable Test and Measurement

the end of the data sheet.

•

High-end A/V

Application Example

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.