ASM5P2304A Datasheet, PDF (1/14 Pages) Alliance Semiconductor Corporation – 3.3 V Zero Delay Buffer

November 2006
rev 1.5
ASM5P2304A
3.3V Zero Delay Buffer
Features
• Zero input - output propagation delay, adjustable
by capacitive load on FBK input.
• Multiple configurations - Refer “ASM5P2304A
Configurations Table”.
• Input frequency range: 15MHz to 133MHz
• Multiple low-skew outputs.
•
Output-output skew less than 200pS.
•
Device-device skew less than 500pS.
•
Two banks of four outputs.
• Less than 200pS Cycle-to-Cycle jitter
(-1, -1H, -2, -2H).
• Available in space saving, 8 pin 150-mil SOIC
packages.
• 3.3V operation.
• Advanced 0.35µ CMOS technology.
• Industrial temperature available.
Functional Description
the REF pin. The PLL feedback is required to be driven to
FBK pin, and can be obtained from one of the outputs. The
input-to-output propagation delay is guaranteed to be less
than 250pS, and the output-to-output skew is guaranteed to
be less than 200pS.
The ASM5P2304A has two banks of two outputs each.
Multiple ASM5P2304A 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
500pS.
The ASM5P2304A is available in two different
configurations (Refer “ASM5P2304A Configurations Table).
The ASM5P2304A-1 is the base part, where the output
frequencies equal the reference if there is no counter in the
feedback path. The ASM5P2304A-1H is the high-drive
version of the -1 and the rise and fall times on this device
are much faster.
ASM5P2304A 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 8 pin package. The part has
an on-chip PLL which locks to an input clock presented on
Block Diagram
The ASM5P2304A-2 allows the user to obtain REF and
1/2X or 2X frequencies on each output bank. The exact
configuration and output frequencies depend on which
output drives the feedback pin.
FBK
PLL
REF
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.