NW34M25WA

Frequency Timing and Translation Modules Model Name NW34M25WA n Main Application SONET, SDH, FTTH, Communications equipment NEW Frequency Controlled Crystal Oscillator (FCXO) Clock Generator Modules 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 Item Supply Voltage (VCC) Current Consumption Operating Temp. Range Input Level Input Reference Frequency Output Levels Output Frequencies (MHz) Free-run accuracy (at 25°C) Capture / pull-in range Model NW34M25WA +3.3 V DC ±5% 200 mA typ 0 to +70°C 2-CMOS 19.44 MHz* 2(3) LVPECL and 1 CMOS 77.76 (LVPECL1, CMOS) and 155.52 (LVPECL0)* ±20×10−6 max. ±25 ×10−6 min. (*other frequencies are available) n List of Ordering Codes Input reference frequency (MHz) 19.44 LVPECL 0 155.52 Output frequencies (MHz) LVPECL 1 LVPECL 2 77.76 High-Z CMOS 77.76 Ordering Code NW34M25WA-155.52M-NSA3436A n Dimensions mm PAD No. #1 #2 #3 25.4±0.3 #4 #5 #6 #7 34.3±0.3 4.8max #8 #9 #10 #11 #12 #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 n Control Functions Control 1 Connection Alarm Output Ref A Input DNC Ref B Input OPT (LVPECL 2+) OPT (LVPECL 2–) VCC GND LVPECL 1+ LVPECL 1– LVPECL 0+ LVPECL 0– GND VCC CMOS Output DNC DNC DNC Control 1 Control 2 0 1 0 1 Mode of operation Lock to Ref A Lock to Ref B Forced Free-run Outputs are Tri-stated 0 0 1 1 www.DataShee...