ASMP5P23S04A Datasheet, PDF (1/15 Pages) Alliance Semiconductor Corporation – 3.3 V SpreadTrak Zero Delay Buffer

November 2006
rev 1.4
ASMP5P23S04A
3.3V ‘SpreadTrak’ Zero Delay Buffer
Features
• Zero input - output propagation delay, adjustable
by capacitive load on FBK input.
• Multiple configurations - Refer “ASM5P23S04A
Configurations Table”.
• Input frequency range: 15 MHz to 133 MHz
• Multiple low-skew outputs.
• Output-output skew less than 200 pS.
• Device-device skew less than 500 pS.
• Two banks of two outputs each.
• Less than 200 pS cycle-to-cycle jitter
•
(-1, -1H, -2, -2H).
• Available in space saving, 8-pin 150-mil SOIC
package.
• 3.3V operation.
• Advanced 0.35µ CMOS technology.
• Industrial temperature available.
• ‘SpreadTrak’.
FBK pin, and can be obtained from one of the outputs. The
input-to-output propagation delay is guaranteed to be less
than 250 pS, and the output-to-output skew is guaranteed
to be less than 200 pS.
The ASM5P23S04A has two banks of two outputs each.
Multiple ASM5P23S04A 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
500 pS.
The ASM5P23S04A is available in two different
configurations (Refer “ASM5P23S04A Configurations
Table). The ASM5P23S04A-1 is the base part, where the
output frequencies equal the reference if there is no
counter in the feedback path. The ASM5P23S04A-1H is
the high-drive version of the -1 and the rise and fall times
on this device are much faster.
Functional Description
ASM5P23S04A is a versatile, 3.3V zero-delay buffer
designed to distribute high-speed clocks in PC,
workstation, datacom, telecom and other high-performance
applications. It is available in a 8-pin package. The part has
an on-chip PLL, which locks to an input clock, presented on
the REF pin. The PLL feedback is required to be driven to
Block Diagram
The ASM5P23S04A-2 allows the user to obtain Ref and
1/2X frequencies on each output bank. The exact
configuration and output frequencies depend on which
output drives the feedback pin.
The ASM5P23S04A-2H is a high-drive version with REF/2
on both banks.
PLL
REF
FBK
CLKA1
CLKA2
/2
Extra Divider (-2)
CLKB1
CLKB2
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: [phone] • Fax: [phone]
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.