Ultra Low Jitter PLL Crystal Oscillator 2.5 x 2.0mm NX251 2.5V/3.3V CMOS XO 2.5 x 2.0mm Ceramic SMD Package: (Scale: none, Dimensions are in mm) Product Features Recommended Land Pattern: • Very low phase jitter - < 1ps RMS max. • Wide frequency range - 5 ~ 250MHz • Thicker crystal for improved reliability • Low supply current - 50mA max. • Industrial Temperature Range • Pb-free & RoHS compliant • Fast lead time CREATED USING CADSTD LITE FREEWARE FROM WWW.CADSTD.COM. NON-COMMERCIAL USE ONLY. Product Description Pin Functions: The NX251 XO series is a high performance CMOS crystal oscillator family with very low jitter performance. It supports various options including wider frequency range, 2.5V/3.3V voltage, and various stabilities. It is designed to meet the clock source specifications for communication systems, and other high performance equipment. Applications Pin Function 1 OE Function 2 Ground 3 Output 4 V DD *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. CREATED USING CADSTD LITE FREEWARE FROM WWW.CADSTD.COM. NON-COMMERCIAL USE ONLY. • Networking systems • Servers and storage systems Part Ordering Information: • Consumer applications NX 251 • Portable Multimedia Devices • Bluetooth Voltage: 1=+3.3V 2=+2.5V SaRonix-eCera™ is a Pericom® Semiconductor company 14-0045 • V I A B FFFF.FFFFFF C Stability and Temp Range: Stability A = +/-20 ppm B = +/-25 ppm C = +/-50 ppm D = +/-25 ppm E = +/-50 ppm Temp Range -20/+70°C -20/+70°C -20/+70°C -40/+85°C -40/+85°C US: +1-408-232-9100 TW: +886-3-4518888 All specifications are subject to change without notice. NX251 Frequency: FFFF.FFFFFF MHz, “4 digits/decimal/6 digits” format • www.pericom.com Rev B 08/13/14 1 2.5V/3.3V CMOS XO NX251 Ultra Low Jitter PLL Crystal Oscillator 2.5 x 2.0mm Electrical Performance Parameter Min. Output Frequency Typ. Max. Units 250 MHz 3.135 3.3 3.465 2.375 2.5 2.625 5 Supply Voltage Supply Current, Output Enabled Notes V 60 See ordering options mA Supply Current, Output Disabled only 40 mA Frequency Stability ±50 ppm See ordering options +85 °C See ordering options 0.4 V 15 pF 55 % Rise and Fall Time 3 ns Measured 20/80% of waveform Jitter, Accumulated, RMS (1-σ) 6 ps 20.000 adjacent periods Operating Temperature Range -40 Output Logic 0, VOL Output Logic 1, VOH V DD -0.4 V Output Load Duty Cycle 45 Jitter, Phase, RMS Measured 50% V DD < 40MHz 0.4 1 ps 12kHz to 5 MHz frequency band 40 to 250MHz 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 V DD Input Voltage (pin 1), Output Disable (low power standby) Notes V or open Output is Hi-Z 0.3 V DD V Output Disable Delay 100 ns Output Enable Delay 100 ns Start up Time 10 ms Absolute Maximum Ratings Parameter Min. Storage Temperature For the latest product information visit: For test circuit go to: Typ. -55 Max. Units +125 °C Notes http://www.pericom.com/products/crystals-and-crystal-oscillators/hiflex-xo/?part=NX251 http://www.pericom.com/pdf/sre/tc_hcmos2.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 14-0045 • US: +1-408-232-9100 TW: +886-3-4518888 All specifications are subject to change without notice. NX251 • www.pericom.com Rev B 08/13/14 2