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The MPC9658 is a 3.3V compatible, 1:10 PLL based clock generator and zero-delay buffer targeted for high performance low-skew clock distribution in mid-range to high-performance telecom, networking and computing applications. With output frequencies up to 250 MHz and output skews less than 120 ps the device meets the needs of the most demanding clock applications. The MPC9658 is specified for the temperature range of 0 to +70.
MPC9658 Maximum Ratings
Symbol
Characteristics
Min
Max
Unit
Condition
VCC
Supply Voltage
-0.3
3.9
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
a. Absolute maximum continuous ratings are those maximum values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation at absolute-maximum-rated conditions is not implied.
MPC9658 Features
• 1:10 PLL based low-voltage clock generator • Supports zero-delay operation • 3.3V power supply • Generates clock signals up to 250 MHz • Maximum output skew of 120 ps • Differential LVPECL reference clock input • External PLL feedback • Drives up to 20 clock lines • 32 lead LQFP packaging • Pin and function compatible to the MPC958
MPC9658 Typical Application
·The MPC9658 supports output clock frequencies from 50 to 250 MHz. Two different feedback divider configurations can be used to achieve the desired frequency operation range. The feedback divider (VCO_SEL) should be used to situate the VCO in the frequency lock range between 200 and 500 MHz for stable and optimal operation. Two operating frequency ranges are supported: 50 to 125 MHz and 100 to 250 MHz. Table 7 illustrates the configurations supported by the MPC9658. PLL zero-delay is supported if BYPASS=1, PLL_EN=1 and the input frequency is within the specified PLL reference frequency range.