3.3V Communications Clock PLL

MDS 2049-45 G

6

Revision 101904

Integrated Circuit Systems, Inc.

MK2049-45

signal traces should be minimized by keeping traces

short and away from active signal traces. Use of vias

should be avoided.

3) The external crystal should be mounted just next to

the device with short traces. The X1 and X2 traces

should not be routed next to each other with minimum

spaces, instead they should be separated and away

from other traces.

4) To minimize EMI the 33

Ω series termination resistor,

if needed, should be placed close to the clock output.

5) An optimum layout is one with all components on the

same side of the board, minimizing vias through other

signal layers (the ferrite bead and bulk decoupling

capacitor can be mounted on the back). Other signal

traces should be routed away from the MK2049-45.

This includes signal traces just underneath the device,

or on layers adjacent to the ground plane layer used by

the device.

MAN05 may also be referenced for additional

suggestions on layout of the crystal section.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the MK2049-45. 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

Item

Rating

Supply Voltage, VDD

7 V

All Inputs and Outputs

-0.5 V to VDD+0.5 V

Ambient Operating Temperature

-40 to +85

°C

Storage Temperature

-65 to +150

°C

Junction Temperature

125

°C

Soldering Temperature

250

°C

Parameter

Min.

Typ.

Max.

Units

Ambient Operating Temperature

-40

+85

°C

Power Supply Voltage (measured in respect to GND)

+3.15

+3.3

+3.45

V