DATASHEET
SERIAL ATA/FIBER CHANNEL CLOCK SYNTHESIZER
ICS426
Description
Features
The ICS426 was developed for serial ATA (SATA) and
fiber channel. It generates a high quality, high
frequency clock output from a low cost frequency
crystal or clock input.
• Packaged in 16 pin TSSOP
• Input crystal or clock frequency of 25 MHz (typical)
• Supports serial ATA Generation 1
• Supports Fiber Channel
Using Phase-Locked-Loop (PLL) techniques, the
device runs from a standard fundamental mode,
inexpensive crystal or clock input.
• Duty cycle of 45/55
• Operating voltage of 3.3V
• Advanced, low power, CMOS process
Block Diagram
VDD
4
S0:S1
X1
25 MHz
Crystal or
Clock Input
PLL /Clock
Synthesis
Circuitry
Crystal
Oscillator
CLK
X2
Capacitors may be
required with a crystal input.
6
OE
GND
IDT™ / ICS™ SERIAL ATA/FIBER CHANNEL CLOCK SYNTHESIZER
1
ICS426
REV B 091102
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
