Frequency Timing and Translation Modules NEW Frequency Controlled Crystal Oscillator (FCXO) Clock Generator Modules Model Name NW34M25WA n Main Application SONET, SDH, FTTH, Communications equipment n Features l Dual reference inputs, LVPECL and CMOS outputs l Simple hardware control for operational mode l Automatic Free-run upon loss of input reference l Lock acquisition time < 1 second * Module markings may be changed without notice. n Specifications Model Item Supply Voltage (VCC) NW34M25WA +3.3 V DC ±5% Current Consumption 200 mA typ Operating Temp. Range 0 to +70°C 2-CMOS Input Level 19.44 MHz* Input Reference Frequency 2(3) LVPECL and 1 CMOS Output Levels Output Frequencies (MHz) 77.76 (LVPECL1, CMOS) and 155.52 (LVPECL0)* Free-run accuracy (at 25°C) ±20×10−6 max. Capture / pull-in range ±25 ×10−6 min. (*other frequencies are available) n List of Ordering Codes Input reference frequency (MHz) LVPECL 0 155.52 19.44 Output frequencies (MHz) LVPECL 1 LVPECL 2 77.76 High-Z Ordering Code CMOS 77.76 n Dimensions NW34M25WA-155.52M-NSA3436A n Control Functions Control 1 mm 25.4±0.3 34.3±0.3 4.8max #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 20.4±0.2 2.54±0.2 #20 #19 #18 #17 #16 #15 #14 #13 #12 #11 1.8±0.2 2.54±0.15 PAD No. Connection #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+ #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 0 0 1 1 Control 2 Mode of operation 0 1 0 1 Lock to Ref A Lock to Ref B Forced Free-run Outputs are Tri-stated #20 Control 2 DNC : Do not connect co34_080205_NW34M25WA_e1