MDS 601-21 H

3

Revision 040204

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ICS601-21

External Components

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

capacitors of 0.01

µF and 0.1 µF should be connected between VDD and GND, as close to the part as

possible. A 50

Ω 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, ICS 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 ICS 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 ±10%, 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

X1/ICLK pin only

VDD/2+1

V

Input Low Voltage

X1/ICLK pin only

VDD/2-1

V