May 2007
rev 0.4
ASM3P623S00B/C/J/E/F/K
Timing-Safe™ Peak EMI reduction IC
General Features
ASM3P623S00B/C/J is the eight-pin version and accepts
one reference input and drives out one low-skew clock.
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Clock distribution with Timing-Safe™ Peak EMI
Reduction
All parts have on-chip PLLs that lock to an input clock on
the CLKIN pin. The PLL feedback is on-chip and is
obtained from the CLKOUT pad, internal to the device.
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Input frequency range: 20MHz - 50MHz
Zero input - output propagation delay
Low-skew outputs
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Output-output skew less than 250pS
Device-device skew less than 700pS
Multiple ASM3P623S00E/F/K devices can accept the same
input clock and distribute it. In this case, the skew between
the outputs of the two devices is guaranteed to be less than
700pS.
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Less than 200pS cycle-to-cycle jitter
Available in 16pin, 150mil SOIC, 4.4mm TSSOP
(ASM3P623S00/E/F/K), and in 8pin, 150 mil
SOIC, 4.4mm TSSOP Packages
(ASM3P623S00B/C/J)
3.3V operation
Industrial temperature range
Advanced CMOS technology
The First True Drop-in Solution
All outputs have less than 200pS of cycle-to-cycle jitter.
The input and output propagation delay is guaranteed to be
less than 250pS, and the output-to-output skew is
guaranteed to be less than 250pS.
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Refer “Spread Spectrum Control and Input-Output Skew
Functional Description
Table”
for deviations and Input-Output Skew for
ASM3P623S00B/C/J and the ASM3P623S00E/F/K devices
ASM3P623S00B/C/J/E/F/K is a versatile, 3.3V zero-delay
buffer designed to distribute high-speed Timing-Safe™
clocks with Peak EMI reduction. ASM3P623S00E/F/K
accepts one reference input and drives out eight low-skew
The ASM3P623S00B/C/J and the ASM3P623S00E/F/K are
available in two different packages, as shown in the
ordering information table.
clocks. It is available in
a
16pin package. The
Block Diagram
VDD
SSON
SS%
PLL
Modulation
XIN/CLKIN
Crystal
Reference
XOUT
Feedforward
Phase
Loop
VCO
Feedback
Divider
CLKOUT
GND
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.