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ICS524

LOW SKEW 1 TO 4 CLOCK BUFFER


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LOW SKEW 1 TO 4 CLOCK BUFFER
DATASHEET
ICS524
Description
The ICS524 is a low skew, single input to four output, clock
buffer. Part of ICS’ ClockBlocksTM family, this is our lowest
skew, small clock buffer.
See the ICS552-02 for a 1 to 8 low skew buffer. For more
than eight outputs, see the MK74CBxxx BuffaloTM series of
clock drivers.
ICS makes many non-PLL and PLL based low skew output
devices as well as Zero Delay Buffers to synchronize
clocks. Contact us for all of your clocking needs.
Features
Extremely low skew outputs (50 ps maximum)
Packaged in 8-pin SOIC
Available in Pb (lead) free package
Low power CMOS technology
Operating voltages of 2.5 V to 5 V
Output Enable pin tri-states outputs
5 V tolerant input clock
Industrial temperature range
Block Diagram
ICLK
Q0
Q1
Q2
Q3
IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER
1
ICS524
REV A 101705



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ICS524 pdf
ICS524
LOW SKEW 1 TO 4 CLOCK BUFFER
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Pin Assignment
ICLK
Q0
Q1
NC
18
27
36
45
8-pin SOIC
GND
Q3
Q2
VDD
FAN OUT BUFFER
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
Pin
Name
ICLK
Q0
Q1
NC
VDD
Q2
Q3
GND
Pin
Type
Input
Output
Output
-
Power
Output
Output
Power
Pin Description
Clock input, 5V tolerant input.
Clock output 0.
Clock output 1.
Do not connect this pin to anything.
Connect to +2.5 V, +3.3 V or +5.0 V.
Clock Output 2.
Clock Output 3.
Connect to ground.
External Components
A minimum number of external components are required for proper operation. A decoupling capacitor of 0.01 µF
should be connected between VDD on pin 5 and GND on pin 8, as close to the device as possible. A 33 series
terminating resistor may be used on each clock output if the trace is longer than 1 inch.
To achieve the low output skew that the ICS524 is capable of, careful attention must be paid to board layout.
Essentially, all four outputs must have identical terminations, identical loads and identical trace geometries. If they
do not, the output skew will be degraded. For example, using a 30series termination on one output (with 33on
the others) will cause at least 15 ps of skew.
IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER
2
ICS524
REV A 101705



Part Number ICS524
Description LOW SKEW 1 TO 4 CLOCK BUFFER
Maker Integrated Device Technology - Integrated Device Technology
Total Page 7 Pages
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