553MILF Integrated Device Technology (Idt), 553MILF Datasheet - Page 2

• Manufacturer Part Number: 553MILF
• Description: Clock Buffer 4-OUT 8-Pin SOIC N Tube
• Manufacturer: Integrated Device Technology (Idt)

Specifications of 553MILF

• Package: 8SOIC N
• Number Of Outputs Per Chip: 4
• Maximum Input Frequency: 200 MHz
• Maximum Propagation Delay Time @ Maximum Cl: 5@2.5V|4@5V ns
• Operating Supply Voltage: 2.5|3.3|5 V

IDT™ LOW SKEW 1 TO 4 CLOCK BUFFER
ICS553
LOW SKEW 1 TO 4 CLOCK BUFFER
Pin Assignment
Pin Descriptions
External Components
Number
Pin
1
2
3
4
5
6
7
8
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 1 and GND on pin 4, as close to the device as possible.
A 33
To achieve the low output skew that the ICS553 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 30 series termination
on one output (with 33 on the others) will cause at least 15 ps of skew.
GN D
V DD
Q0
Q1
Name
GND
ICLK
VDD
Pin
OE
Q0
Q1
Q2
Q3
series terminating resistor may be used on each clock output if the trace is longer than 1 inch.
1
2
3
4
8 - p i n S OI C
Output
Output
Output
Output
Power
Power
Type
Input
Input
Pin
Connect to +2.5 V, +3.3 V or +5.0 V.
Clock output 0.
Clock output 1.
Connect to ground.
Clock input, 5 V tolerant input.
Clock Output 2.
Clock Output 3.
Output Enable. Tri-states outputs when low. Connect to VDD for normal operation.
8
7
6
5
O E
Q 3
Q 2
I CL K
2
Pin Description
ICS553
FAN OUT BUFFER
REV N 051310