Crystal Oscillator Model Name NW36M25LA Frequency Controlled Crystal Oscillator (FCXO) Advanced Stratum3 Module ■ Main Application SONET, SDH, FTTH, Communications equipment ■ Features ● Four inputs, Stratum 3 solution for the Synchronous Timing Source in SONET/ SDH network elements. ● Accepts 4 reference inputs in 9 steps from 8 kHz to 77.76 MHz (See specification below) ● Compliant with Telcordia GR1244CORE, GR253 and ITU-T G.812 / G.813. ● Hit-less reference switching. * Module markings may be changed without notice. ● Frequency ramp control during reference switching. ● Supports Master / Slave operation ● Three output signals: one selectable (See specification below) up to 77.76 MHz, one fixed at 8 kHz and 1.544 MHz or 2.048 MHz BITS output. ■ Specifications Model Item NW36M25LA Supply voltage [VCC] (V) +3.3 ± 5 % Current consumption (mA) Typ. 150 Operating temperature range (°C) 0 to +70 Storage Temperature Range (°C) -20 to +85 Input level 4-CMOS Input reference frequency (MHz) 0.008, 1.544, 2.048, 12.96, 19.44, 25.92, 38.88, 51.84, 77.76 Output level 3-CMOS Output frequency 1 (MHz) OUTPUT 1 : 12.96, 19.44, 25.92, 38.88, 51.84 or 77.76 Output frequency 2,3 (MHz) M/S OUT : 0.008, BITS CLK : 1.544 or 2.048 Free-run accuracy Max. ±4.6×10−6 Holdover Max. ±0.37×10−6 PLL bandwidth (Hz) 0.025 to 1.6 (user programmable) ■ List of Ordering Codes Output frequency (MHz) [ ]: OUTPUT1 frequency to order. For example, in 19.44 MHz case, NW36M25LA-19.44M-NSA3437A Ordering Code OUTPUT 1: One selectable up to 77.76 MHz NW36M25LA-[ ]-NSA3437A ■ Dimensions mm 36.83 ± 0.5 28 15 Max. 6.0 0.457 ± 0.13 3.18 ± 0.3 14 1 1.0 ± 0.1 25.4 ± 0.5 Pin connections 2.54 ± 0.2 21.59 ± 0.3 33.02 ± 0.2 14 21.59 ± 0.3 1 Pin connections #1 LOS #15 DNC #2 LOL #16 T1/E1 #3 M/S REF #17 HOLD/GOOD #4 REF1 #18 TDO #5 REF2 #19 TCK #6 REF3 #20 GND #7 REF4 #21 SPI ENBL #8 TDI #22 SPI IN #9 TMS #23 VCC #10 TRST #24 SPI ENBL #11 BITS CLK #25 RESET #12 M/S OUT #26 SPI OUT #13 OUTPUT1 #27 SP INT #14 DNC #28 MASTER SELECT DNC:Do not connect 28 33.02 ± 0.2 15 fcxo01_111003_NW36M25LA_e