ICS651M IDT, Integrated Device Technology Inc, ICS651M Datasheet - Page 2

• Manufacturer Part Number: ICS651M
• Description: IC CLOCK BUFFER 1:4 8-SOIC
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: ClockBlocks™r
• Type: Fanout Buffer (Distribution)r

Specifications of ICS651M

• Number Of Circuits: 1
• Ratio - Input:output: 1:4
• Differential - Input:output: No/No
• Input: Clock
• Output: Clock
• Frequency - Max: 200MHz
• Voltage - Supply: 1.425 V ~ 2.625 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC
• Frequency-max: 200MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 651M

Pin Assignment
Pin Descriptions
External Components
IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER
Number
ICS651
LOW SKEW 1 TO 4 CLOCK BUFFER
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 F
should be connected between VDD on pin 7 and GND on pin 6, as close to the device as possible. A 33
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 ICS651 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.
ICLK
Q1
Q2
Q3
Name
ICLK
GND
VDD
Pin
OE
Q1
Q2
Q3
Q4
4
1
2
3
Output
Output
Output
Output
Power
Power
Type
Input
Input
Pin
Clock Input. 3.3 V tolerant input.
Clock Output 1.
Clock Output 2.
Clock Output 3.
Clock Output 4.
Connect to ground.
Output Enable. Tri-states outputs when low. Connect to VDD for normal operation.
Connect to +1.5 V or +2.5 V.
8
6
5
7
Q4
OE
VDD
GND
2
Pin Description
ICS651
FAN OUT BUFFER
REV G 051310
series