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524MILF

P1-P3P4-P6P7-P7
DATASHEET
LOW SKEW 1 TO 4 CLOCK BUFFER ICS524
IDT™ / ICS™
LOW SKEW 1 TO 4 CLOCK BUFFER 1
ICS524 REV C 021909
Description
The ICS524 is a low skew, single input to four output, clock
buffer. Part of IDT’s ClockBlocks
TM
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 Buffalo
TM
series of
clock drivers.
IDT 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
• 5 V tolerant input clock
• Industrial temperature range
Block Diagram
Q0
ICLK
Q1
Q2
Q3
ICS524
LOW SKEW 1 TO 4 CLOCK BUFFER FAN OUT BUFFER
IDT™ / ICS™
LOW SKEW 1 TO 4 CLOCK BUFFER 2
ICS524 REV C 021909
Pin Assignment
Pin Descriptions
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 Ω 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 30Ω series termination on one output (with 33Ω on
the others) will cause at least 15 ps of skew.
1
2
3
VDD
4
Q0
Q1
Q3
GND
Q2
ICLK 8
7
6
5NC
8-pin SOIC
Pin
Number
Pin
Name
Pin
Type
Pin Description
1 ICLK Input Clock input, 5V tolerant input.
2 Q0 Output Clock output 0.
3 Q1 Output Clock output 1.
4 NC — Internal no connect.
5 VDD Power Connect to +2.5 V, +3.3 V or +5.0 V.
6 Q2 Output Clock Output 2.
7 Q3 Output Clock Output 3.
8 GND Power Connect to ground.
ICS524
LOW SKEW 1 TO 4 CLOCK BUFFER FAN OUT BUFFER
IDT™ / ICS™
LOW SKEW 1 TO 4 CLOCK BUFFER 3
ICS524 REV C 021909
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS524. These ratings, which are
standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these
or any other conditions above those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Recommended Operation Conditions
DC Electrical Characteristics
VDD=2.5 V ±5%, Ambient temperature -40 to +85° C, unless stated otherwise
Item Rating
Supply Voltage, VDD 7 V
Outputs -0.5 V to VDD+0.5 V
ICLK -0.5 V to 5.5 V
Ambient Operating Temperature -40 to +85° C
Storage Temperature -65 to +150° C
Junction Temperature 125° C
Soldering Temperature 260° C
Parameter Min. Typ. Max. Units
Ambient Operating Temperature -40 +85 ° C
Power Supply Voltage (measured in respect to GND) +2.375 +5.25 V
Parameter Symbol Conditions Min. Typ. Max. Units
Operating Voltage VDD 2.375 2.625 V
Input High Voltage, ICLK V
IH
Note 1 VDD/2+0.5 5.5 V
Input Low Voltage, ICLK V
IL
Note 1 VDD/2-0.5 V
Output High Voltage V
OH
I
OH
= -16 mA 2 V
Output Low Voltage V
OL
I
OL
= 16 mA 0.4 V
Operating Supply Current IDD No load, 135 MHz 25 mA
Nominal Output Impedance Z
O
20 Ω
Input Capacitance C
IN
ICLK 5 pF
Short Circuit Current I
OS
±28 mA
P1-P3P4-P6P7-P7

524MILF

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Manufacturer:
IDT
Description:
Clock Buffer LOW SKEW 1 TO 4 CLOCK BUFFER
Lifecycle:
New from this manufacturer.
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