1 Features

• Vendor item drawing (VID#): V62/12624-02YE

• Radiation tolerance:

– Total ionizing dose (TID): 50krad

– Single-event latch-up (SEL): 43MeV × cm2/mg

• Junction temperature range: –55°C to 125°C

• Distributes One Differential Clock Input Pair

(LVDS, CML, SSTL, LVPECL, LVECL) to 10

Differential LVPECL or LVECL outputs

• Supports a Wide Supply Voltage Range From

2.375V to 3.8V

• Selectable Clock Input Through CLK_SEL

• Low-Output Skew (Typical 15ps) for Clock-

Distribution Applications

– Additive Jitter Less Than 1ps

– Propagation Delay Less Than 355ps

– Open Input Default State

– LVDS, CML, SSTL Input Compatible

• VBB Reference Voltage Output for Single-Ended

Clocking

• Frequency Range From DC to 3.5GHz

• Space-enhanced plastic (space EP):

– SUPPORTS DEFENSE, AND AEROSPACE

APPLICATIONS

– Controlled baseline

– One assembly and test Site

– One fabrication site

– Extended product life cycle

– Product traceability

– Outgassing test performed per ASTM E595

2 Applications

• Designed for Driving 50Ω Transmission Lines

• High-Performance Clock Distribution

• Communications payloads

• Radar imaging payload

• Command data handling

3 Description

The CDCLVP111-SEP clock driver distributes one

differential clock pair of LVPECL input, (CLK0, CLK1)

to ten pairs of differential LVPECL clock (Q0, Q9)

outputs with minimum skew for clock distribution.

The CDCLVP111-SEP can accept two clock sources

into an input multiplexer. The CDCLVP111-SEP is

specifically designed for driving 50Ω transmission

lines. When an output pin is not used, leaving the pin

open is recommended to reduce power consumption.

If only one of the output pins from a differential

pair is used, the other output pin must be identically

terminated to 50Ω.

The VBB reference voltage output is used if singleended

input operation is required. In this case, the

VBB pin must be connected to CLK0 and bypassed to

GND using a 10nF capacitor.

For high-speed performance, the differential mode is

strongly recommended.

The CDCLVP111-SEP is characterized for operation

from –55°C to 125°C.