Crystal Oscillator Model Name NW34M25WA Frequency Controlled Crystal Oscillator (FCXO) Clock Generator Modules ■ Main Application SONET, SDH, FTTH, Communications equipment ■ Features ● Dual reference inputs, LVPECL and CMOS outputs ● Simple hardware control for operational mode ● Automatic Free-run upon loss of input reference * Module markings may be changed without notice. ● Lock acquisition time < 1 second ■ Specifications Model Item NW34M25WA Supply voltage [VCC] (V) +3.3 ± 5 % Current consumption (mA) Typ. 200 Operating temperature range (°C) 0 to +70 Storage Temperature Range (°C) -20 to +85 Input level 2-CMOS Input reference frequency (MHz) 19.44 * Output level 2 (3) LVPECL and 1 CMOS Output frequency (MHz) LVPECL 0 : 155.52, LVPECL 1 : 77.76, CMOS : 77.76 Free-run accuracy Max. ±20 × 10−6 (at 25 °C) Pull-in range Min. ±25 × 10−6 (*Compatible with other frequencies) ■ List of Ordering Codes Input reference frequency (MHz) 19.44 ■ Control Functions Output frequencies (MHz) LVPECL 0 155.52 LVPECL 1 77.76 LVPECL 2 High-Z CMOS 77.76 Ordering Code NW34M25WA-155.52M-NSA3436A Control1 Control2 Control Functions 0 0 Lock to Ref A 0 1 Lock to Ref B 1 0 Forced Free-run 1 1 Outputs are Tri-stated ■ Dimensions mm 25.4 ± 0.3 Terminal land connections #1 Alarm Output #2 Ref A Input #3 DNC #4 Ref B Input #5 OPT (LVPECL 2+) #6 OPT (LVPECL 2–) #7 VCC #8 GND #9 LVPECL 1+ 34.3 ± 0.3 Max. 4.8 #1 #10 20.4 ± 0.2 2.54 ± 0.2 #20 1.8 ± 0.2 #11 2.54 ± 0.15 #10 LVPECL 1– #11 LVPECL 0+ #12 LVPECL 0– #13 GND #14 VCC #15 CMOS Output #16 DNC #17 DNC #18 DNC #19 Control 1 #20 Control 2 DNC : Do not connect fcxo02_111003_NW34M25WA_e