8T33FS6222 Datasheet, PDF (1/34 Pages) Integrated Device Technology – Two selectable differential PECL inputs

Low Voltage, 1:15 Differential PECL Clock
Divider and Fanout Buffer
8T33FS6222
DATA SHEET
General Description
The 8T33FS6222 is a bipolar monolithic differential clock fanout
buffer. Designed for most demanding clock distribution systems, the
8T33FS6222 supports various applications that require the
distribution of precisely aligned differential clock signals. Using SiGe
technology and a fully differential architecture, the device offers very
low skew outputs and superior digital signal characteristics. Target
applications for this clock driver is high performance clock distribution
in computing, networking and telecommunication systems.
Functional Description
The 8T33FS6222 is designed for low skew clock distribution systems
and supports clock frequencies up to 2GHz. The CLK0 and CLK1
inputs can be driven by PECL compatible signals. Each of the four
output banks of two, three, four and six differential clock output pairs
can be independently configured to distribute the input frequency or
2 of the input frequency. The FSELA, FSELB, FSELC, FSELD, and
CLK_SEL are asychronous control inputs. Any changes of the
control inputs require a MR pulse for resynchronization of the 2
outputs. For the functionality of the MR control input, see
Figure 4.Functional Diagram.
In order to meet the tight skew specification of the device, both
outputs of a differential output pair should be terminated, even if only
one output is used. In the case where not all ten outputs are used,
the output pairs on the same package side as the parts being used
on that side should be terminated.
The 8T33FS6222 can be operated from a single 3.3V or 2.5V supply.
Features
• Fifteen differential PECL outputs (four output banks)
• Two selectable differential PECL inputs
• Selectable ÷1 or ÷2 frequency divider
• Supports DC to 2GHz input frequency
• Single 3.3V or 2.5V supply
• Standard 52-Lead TQFP package with exposed pad for enhanced
thermal characteristics
• Supports industrial temperature range
• Lead-free RoHS 6 packaging
.
8T33FS6222 REVISION 1 2/2/15
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