ICS581-01 Datasheet, PDF (1/10 Pages) Integrated Circuit Systems – Zero-Delay Glitch-Free Clock Multiplexer

ZERO DELAY GLITCH-FREE CLOCK MULTIPLEXER
DATASHEET
ICS581-01/02
Description
Features
The ICS581-01/02 are glitch free, Phase Locked Loop
(PLL) based clock multiplexers (mux) with zero delay from
input to output. They each have four low skew outputs
which can be configured as a single output, three outputs,
or four outputs. The ICS581-01 allows user control over the
mux switching, while the ICS581-02 has automatic
switching between the two clock inputs.
The ICS581-01 and -02 are members of IDT’s
ClockBlocks^TM family of clock generation, synchronization,
and distribution devices. For a non-PLL based clock mux,
see the ICS580-01.
Block Diagram
• 16-pin TSSOP package
• RoHS compliant packaging
• No short pulses or glitches on output
• Operates from 6 to 200 MHz
• Low skew outputs
• User controlled (-01) or automatic, timed mux switch (-02)
• Ideal for systems with back-up or redundant clocks
• Zero delay (input to output)
• 50% output duty cycle allows duty cycle correction
• SpreadSmart^TM technology works with spread spectrum
parts
• Industrial temperature of ICS581-02 available
ICS581-01
INA
1
VDD ²
CLK1
INB
SELA
FBIN
0
PLL
Output
Divide
CLK2
CLK3
2
S1:0
ICS581-02
DIV
INA
INB
FBIN
/48
1
/3
0
1
0
GND ²
VDD 2
IN _Transition
Detector
OE0 OE1
PLL
Output
Divide
CLK4
CLK1
CLK2
CLK3
2
S1:0
GND ²
OE0 OE1
CLK4
IDT® ZERO DELAY GLITCH-FREE CLOCK MULTIPLEXER
1
ICS581-01/02 REV M 110216