Ultra Low Jitter PLL Crystal Oscillator 2.5 x 2.0mm NX256 2.5V/3.3V CML XO 2.5 x 2.0mm Ceramic SMD Package: (Scale: none; dimensions are in mm) Product Features Recommended Land Pattern: • Very low phase jitter - < 1.0ps RMS max. 2.70 • Wide frequency range - 5 ~ 1000MHz 1.50 0.70 • Thicker crystal for improved reliability 0.60 1.11 0.57 2.25 • Pb-free & RoHS compliant 0.35 • Industrial Temperature Range 0.95 • Low supply current - 70mA max. Product Description The NX256 XO series is a high performance CML crystal oscillator family with very low jitter performance. It supports various options including wider frequency range, 2.5/3.3 voltage, various stabilities, and different package sizes. It is designed to meet the clock source specifications for communication systems, and other high performance equipment. Pin Functions: Pin Function 1 OE Function 2 N/C 3 Ground 4 Q 5 Q 6 VCC Applications • Networking systems *Extended high frequency power decoupling is recommended (see test circuit for minimum recommendation). To ensure optimal performance, do not route RF traces beneath the package. • Servers and storage systems • Profession video equipments Part Ordering Information: • Test and measurement UX NX70256 V • FPGA/ASIC clock generation A Voltage: 1=+3.3V 2=+2.5V SaRonix-eCera™ is a Pericom® Semiconductor company 15-0071 • I1 FFFF.FFFFFF FFFF.FFFFFF B C Stability and Temp Range: Frequency: Stability Temp Range A = +/-20 ppm -20/+70°C B = +/-25 ppm -20/+70°C C = +/-50 ppm -20/+70°C D = +/-25 ppm -40/+85°C E = +/-50 ppm -40/+85°C US: +1-408-232-9100 TW: +886-3-4518888 All specifications are subject to change without notice. NX256 FFFF.FFFFFF MHz, “4 digits/decimal/6 digits” format • www.pericom.com Rev D 08/12/15 1 NX256 2.5V/3.3V CML XO Ultra Low Jitter PLL Crystal Oscillator 2.5 x 2.5mm Electrical Performance Parameter Min. Typ. Max. Units 1000 MHz 3.135 3.3 3.465 2.375 2.5 2.625 Output Frequency 5 Supply Voltage Supply Current, Output Enabled V 70 Supply Current, Output Disabled only 40 mA ±50 ppm +85 °C -40 Output Load See ordering options mA Frequency Stability Operating Temperature Range Notes See ordering options See ordering options 100Ω connected between outputs Output requires termination Differential Output Voltage. VOD 0.35 0.65 Output Offset Voltage. VOS 1.125 1.375 V 45 55 % 400 ps Measured 20/80% of waveform 6 ps 20.000 adjacent periods Duty Cycle Rise and Fall Time Jitter, Accumulated , RMS (1-σ) Jitter, Phase, RMS V Measured 50% VCC < 40MHz 0.4 1 ps 12kHz to 5 MHz frequency band 40 to 1000MHz 0.4 1 ps 12kHz to 20 MHz frequency band 125MHz, 156.25MHz 0.4 0.6 ps 12kHz to 20 MHz frequency band 40 ps 100,000 random periods Jitter, pk-pk Notes: 1. Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, initial calibration tolerance (25°C), aging (1 year at 25°C average effective ambient temperature), shock and vibration. 2. Phase jitter typical value is depending on output frequencies. 3. For specifications other than those listed, please contact sales. Output Enable / Disable Function Parameter Min. Input Voltage (pin 1), Output Enable Typ. Max. Units 0.7 VCC Notes V or open 0.3 VCC V Output is Hi-Z Output Disable Delay 100 ns Output Enable Delay 100 ns Start up Time 10 ms Input Voltage (pin 1), Output Disable (low power standby) Absolute Maximum Ratings Parameter Min. Storage Temperature Typ. -55 Max. Units +125 °C Notes For the latest product information visit: http://www.pericom.com/products/crystals-and-crystal-oscillators/hiflex-xo/?part=NX256 For test circuit go to: http://www.pericom.com/pdf/sre/tc-CML.pdf For soldering reflow profile and reliability test ratings go to: http://www.pericom.com/pdf/sre/reflow.pdf For tape and reel information go to: http://www.pericom.com/pdf/sre/tr_2520_xo.pdf SaRonix-eCera™ is a Pericom® Semiconductor company 15-0071 • US: +1-408-232-9100 TW: +886-3-4518888 All specifications are subject to change without notice. NX256 • www.pericom.com Rev D 08/12/15 2