MPC9447

Features:

• 9 LVCMOS Compatible Clock Outputs
• 2 Selectable, LVCMOS Compatible Inputs
• Maximum Clock Frequency of 350 MHz
• Maximum Clock Skew of 150 ps
• Synchronous Output Stop in Logic Low State Eliminates Output RuntPulses
• High-Impedance Output Control
• 3.3V or 2.5V Power Supply
• Drives up to 18 Series Terminated Clock Lines
• Ambient Temperature Range -40to +85
• 32 Lead LQFP Packaging
• Supports Clock Distribution in Networking, Telecommunications, and Computer Applications
• Pin and Function Compatible to MPC947


Pinout




Specifications

Symbol	Characteristics	Min	Max	Unit	Condition
VCC	Supply Voltage	-0.3	-3.6	V
VIN	DC Input Voltage	-0.3	VCC+0.3	V
VOUT	DC Output Voltage	-0.3	VCC+0.3	V
IIN	DC Input Current		±20	ma
IOUT	DC Output Current		±50	ma
TS	Storage temperature	65	125

Description

MPC9447 is specifically designed to distribute LVCMOS compatible clock signals up to a frequency of 350 MHz. Each output provides a precise copy of the input signal with a near zero skew. The outputs buffers of MPC9447 support driving of 50 terminated transmission lines on the incident edge: each is capable of driving either one parallel terminated or two series terminated transmission lines.

Two selectable independent LVCMOS compatible clock inputs are available, providing support of redundant clock source systems. The MPC9447 CLK_STOP control is synchronous to the falling edge of the input clock. MPC9447 allows the start and stop of the output clock signal only in a logic low state, thus eliminating potential output runt pulses. Applying the OE control will force the outputs into high-impedance mode.

All inputs have an internal pull-up or pull-down resistor preventing unused and open inputs from floating. The MPC9447 supports a 2.5V or 3.3V power supply and an ambient temperature range of -40_C to +85_C. The MPC9447 is pin and function compatible but performance-enhanced to the MPC947.