DATASHEET
LOCO™ PLL CLOCK MULTIPLIER
ICS501
Description
Features
TM
The ICS501 LOCO is the most cost effective way to
• Packaged as 8-pin SOIC, MSOP, or die
generate a high-quality, high-frequency clock output from a
lower frequency crystal or clock input. The name LOCO
stands for Low Cost Oscillator, as it is designed to replace
crystal oscillators in most electronic systems. Using
Phase-Locked Loop (PLL) techniques, the device uses a
standard fundamental mode, inexpensive crystal to
produce output clocks up to 160 MHz.
• Available in RoHS 5 (green) or RoHS 6 (green and lead
free) compliant packaging
• IDT’s lowest cost PLL clock
• Zero ppm multiplication error
• Input crystal frequency of 5 - 27 MHz
• Input clock frequency of 2 - 50 MHz
• Output clock frequencies up to 160 MHz
• Extremely low jitter of 25 ps (one sigma)
• Compatible with all popular CPUs
• Duty cycle of 45/55 up to 160 MHz
• Nine selectable frequencies
Stored in the chip’s ROM is the ability to generate nine
different multiplication factors, allowing one chip to output
many common frequencies (see table on page 2).
The device also has an output enable pin which tri-states
the clock output when the OE pin is taken low.
This product is intended for clock generation. It has low
output jitter (variation in the output period), but input to
output skew and jitter are not defined or guaranteed. For
applications which require defined input to output skew, use
the ICS570B.
• Operating voltage of 3.3 V or 5.0 V
• Tri-state output for board level testing
• 25 mA drive capability at TTL levels
• Ideal for oscillator replacement
• Industrial temperature version available
• Advanced, low-power CMOS process
NOTE: EOL for non-green parts to occur on 5/13/10
per PDN U-09-01
Not recommended for new designs. Use the IDT5V40501 for all new designs.
Block Diagram
VDD
2
S1:0
PLL Clock
Multiplier
Circuitry
X1/ICLK
CLK
Crystal or
Clock input
Crystal
Oscillator
and ROM
X2
Optional crystal capacitors
OE
GND
IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER
1
ICS501
REV Q 092209
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
