frequency control products type dfo 236 siiie revision 01 checked ne date 10.10.2004 page 15 stratum iiie ocxo types dfo 236-msh features 4 to 20 mhz stratum iiie compliant over 0 to 70c sc cut crystal applications stratum iiie function dfo 236-msh nc 1 nc 2 vcc 3 output 4 gnd 5 type dfo 236-msh frequency range 4 to 20 mhz standard frequencies 12.8, 16.384, 19.44 & 20 mhz electrical specifications supply voltage 5 v 5 % supply power (no load) @ 25c 1 w supply power during warm up 5 w output load hcmos 15 pf or 2 ttl duty cycle @ 2.5 v 40/60...60/40 % rise & fall times (10 to 90%) 15 ns high/low levels or output amplitude 3.5 v/ 0.5 v ssb phase noise (1 hz bw) @ 1 hz -90 dbc/hz (typical @ 12.8mhz) @ 10 hz -120 dbc/hz @ 100 hz -130 dbc/hz @ 1 khz -135 dbc/hz warm up time to reach 1 x 10e-7 10 min frequency stability detailed tolerances temperature model stability versus : overall holdover 24 hrs calibration type range code temperature vcc 5 % age ing stability stability drift @ 25c telcordia gr-1244 core stratum iiie 0 to 70c bs3e all types -20 to 70c cs3e 1 x 10e-8 1 x 10e-9 3.5 ppm over 20 years 4.6 ppm over 20 years 12 x 10e-9 1 x 10e-9 5 x 10e-7 definitions 24 hours drift gr-1244-core 24 hours holdover mode over full temperature range and vcc 1 % ordering code type + option code + frequency + model code + voltage value example dfo 236-msh 12.8 mhz cs3e 0.40.1 1 2 4 5 3 8.9 8.9 26.20.2 25.4 360.2 h0.1 5 0.8 h = 17.0 mm
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