ICS601-21

LOW PHASE NOISE CLOCK MULTIPLIER

CLOCK MULTIPLIER

IDT® LOW PHASE NOISE CLOCK MULTIPLIER

3

ICS601-21

REV J 121412

External Components

The ICS601-21 requires a minimum number of external components for proper operation. Decoupling capacitors of

0.01

F and 0.1 F should be connected between VDD and GND, as close to the part as possible. A 50 

terminating resistor should be used on each clock output. (See termination diagram on page 5). The crystal must

be connected as close to the chip as possible. The crystal should be fundamental mode, parallel resonant. Do not

use third overtone. For exact tuning when using a crystal, capacitors should be connected from pins X1 to ground

and X2 to ground. In general, the value of these capacitors is given by the following equation, where CL is the

crystal load capacitance: Crystal caps (pF) = (CL-5) x 2. So for a crystal with 16 pF load capacitance, two 22 pF

caps can be used. For any given board layout, IDT can measure the board capacitance and recommend the exact

capacitance value to use.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the ICS601-21. 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=3.3 V ±0.3V, Ambient temperature 0 to +70

C

Item

Rating

Supply Voltage, VDD

7 V

All Inputs and Outputs

-0.5 V to VDD+0.5 V

Ambient Operating Temperature, Commercial version

0 to +70

C

Storage Temperature

-65 to +150

C

Junction Temperature

125

C

Soldering Temperature

260

C

Parameter

Min.

Typ.

Max.

Units

Ambient Operating Temperature

0

+70

C

Power Supply Voltage (measured in respect to GND)

+3.0

+3.6

V

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Operating Voltage

VDD

3.0

3.6

V

Input High Voltage

VIH

X1/ICLK pin only

VDD/2+1

V

Input Low Voltage

VIL

X1/ICLK pin only

VDD/2-1

V