SL2309
Low Jitter and Skew 10 to 140 MHz Zero Delay Buffer (ZDB)
Key Features
Description
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10 to 140 MHz operating frequency range
Low output clock skew: 50ps-typ
Low output clock jitter:
The SL2309 is a low skew, low jitter and low power Zero
Delay Buffer (ZDB) designed to produce up to nine (9)
clock outputs from one (1) reference input clock, for high
speed clock distribution applications.
50 ps-typ cycle-to-cycle jitter
The product has an on-chip PLL which locks to the input
clock at CLKIN and receives its feedback internally from
the CLKOUT pin.
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Low part-to-part output skew: 150 ps-typ
3.3 V power supply range
Low power dissipation:
The SL2309 has two (2) clock driver banks each with four
(4) clock outputs. These outputs are controlled by two (2)
select input pins S1 and S2. When only four (4) outputs
are needed, four (4) bank-B output clock buffers can be tri-
stated to reduce power dissipation and jitter. The select
inputs can also be used to tri-state both banks A and B or
drive them directly from the input bypassing the PLL and
making the product behave like a Non-Zero Delay Buffer
(NZDB).
28 mA-max at 66 MHz
44 mA –max at 140 MHz
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One input drives 9 outputs organized as 4+4+1
Select mode to bypass PLL or tri-state outputs
SpreadThru™ PLL that allows use of SSCG
Standard and High-Drive options
Available in 16-pin SOIC and TSSOP packages
Available in Commercial and Industrial grades
The high-drive (-1H) version operates up to 140MHz and
low drive (-1) version operates up to 100MHz at 3.3V.
Applications
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Printers and MFPs
Benefits
Digital Copiers
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Up to nine (9) distribution of input clock
PCs and Work Stations
DTV
Standard and High-Dirive levels to control impedance
level, frequency range and EMI
Routers, Switchers and Servers
Digital Embeded Systems
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Low power dissipation, jitter and skew
Low cost
Block Diagram
Low Power and
Low Jitter
PLL
MUX
CLKOUT
CLKIN
CLKA1
CLKA2
CLKA3
CLKA4
S2
S1
Input Selection
Decoding Logic
CLKB1
CLKB2
CLKB3
CLKB4
2
2
VDD
GND
Rev 1.1, May 29, 2007
Page 1 of 12
2200 Laurelwood Road, Santa Clara, CA 95054 Tel: (408) 855-0555 Fax: (408) 855-0550 www.SpectraLinear.com
SPECTRALINEAR [ SPECTRALINEAR INC ]
