NB4N441

NB4N441 3.3V Serial Input MultiProtocol PLL Clock Synthesizer, Differential LVPECL Output Description The NB4N441 is a precision clock synthesizer which generates a differential LVPECL clock output frequency from 12.5 MHz to 425 MHz. A Serial Peripheral Interface (SPI) is used to configure the device to produce one of sixteen popular standard protocol output frequencies from a single 27 MHz crystal reference. The NB4N441 also has the added feature of allowing application specific output frequencies from 12.5 MHz to 425 MHz using crystals within the range of 10 MHz to 28 MHz. Features Performs Precision Clock Generation and Synthesis from a Single 27 MHz Crystal Reference Serial Load Capability for Proprietary Frequencies Flexible Input Allows for External Clock Reference Exceeds Bellcore and ITU Jitter Generation Specification PLL Lock Detect Output Output Enable Fully Integrated Phase−Lock−Loop with Internal Loop Filter Operating Range: VCC = 3.135 V to 3.465 V Small Footprint 24 Pin QFN These are Pb−Free Devices* LOCKED 27 MHz XTAL OSC B R FB Feedback Divider SDATA SCLOCK SLOAD Frequency Control Logic Serial Load http://onsemi.com QFN−24 MN SUFFIX CASE 485L MARKING DIAGRAM* 24 1 NB4N 441 ALYWG G A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location) *For additional marking information, refer to Application Note AND8002/D. ORDERING INFORMATION See detailed ordering and shipping...