frequency control products type dfa s4-khz/lhz revision 00 checked ne date 09.02.2006 page xx 8.9 8.9 23.6 17.8 3.0 4.0 20.0 25.40.2 22.20.5 0.8 20.0 2.5 2.5 7.40.2 1 2 3 4 5 surface mount tcxo dfa s4-khz (5 v) & dfa s4-lhz (3.3 v) key features 5 to 52 mhz tight stability analogue temperature compensation applications sdh/sonet/microwave function dfa s4 nc 1 e/d 2 vcc 3 output 4 gnd 5 type dfa s4-khz dfa s4-lhz frequency range 5 to 52 mhz electrical specifications supply voltage 5 v 5 % 3.3 v 5 % supply current ( no load) 20 ma 10 ma output load hcmos 15 pf or 2 ttl hcmos 15 pf or 2 ttl duty cycle @ 50% level 45/55...55/45 % 45/55...55/45 % rise/fall times (10 to 90 %) 5 ns 5 ns high/low levels or output amplitude 4.5 v/ 0.5 v 2.8 v/ 0.3 v start-up 10 ms @ 4.75 v 10 ms @ 3.15 v tri-state control on pin 2 high or open = enable, low = high z high or open = enable, low = high z frequency stability detailed tolerances [ ppm ] temperature model stability versus: calibration type range code temperature vcc 5 % load 10 % ageing @ 25 c 0 to 70c b0.5 0.5 -20 to 70c c0.5 0.5 -40 to 85c e0.5 0.5 all types -40 to 85c e1 1.0 0.1 0.1 1 1 remark ageing is 1 st year at 25c options code voltage control on pin 1 (positive slope ) v 5 ppm, 15 ppm 2.5 v 2 v 5 ppm, 15 ppm 1.65 v 1.35 v ordering code type + option code + frequency + model code example dfa s4-khzv 19.44 mhz e0.5 pc board footprint
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