frequency control products type dfv s2-khz & lhz revision 01 checked ne date 20.03.2007 page 39 m i n i a t u r e s u r f a c e m o u n t v c x o d f v s 2 - k h z ( 5 v ) & d f v s 2 - l h z ( 3 . 3 v ) key features 2 to 52 mhz 20 ppm overall stability available encapsulated crystal applications sonet/sdh/switching function dfv s2 v control 1 n/c or enable/disable 2 gnd 3 output 4 n/c or enable/disable 5 vcc 6 type dfv s2-khz dfv s2-lhz frequency range 2 to 52 mhz 2 to 52 mhz electrical specifications supply voltage 5 v 5 % 3.3 v 5 % supply current (no load) 25 mhz 15 ma 10 ma > 25 mhz 35 ma 25 ma output load (hcmos) 25 pf up to 25 mhz, 15 pf above 15 pf duty cycle 45/55...55/45 % @ 50% level 45/55...55/45 % @ 50% l evel rise/fall times (@ 15 pf load) 10 to 90 % : 5 ns 10 to 90 % : 5 ns high/low levels 4.5 v/ 0.5 v 2.8 v/ 0.3 v tri-state control (pin 2) (pin 5 n/c) high or open = enable, low = high z high or open = enable, low = high z start up 10 ms @ 4.75 v 10 ms @ 3.15 v frequency stability tolerances [ ppm ] temperature model type range code overall stability pulling range function control voltage 100xb20 20 100 0 to 70c 100xb25 25 dfv s2-khz -40 to 85c 100xe50 50 100 positive 2.5 v 2.5 v 90xb20 20 0 to 70c 90xb25 25 dfv s2-lhz -40 to 85c 90xe50 50 90 positive 1.65 v 1.65 v input impedance 10 k includes calibration @ 25c, temperature, ageing, vc c and load changes remarks ageing is 1 st year at 25c options code tri-state control on pin 5 z5 high or open = enabl e, low = high z (pin 2 n/c) ordering code type + option code + frequency + model code example dfv s2-lhz 34.368 mhz 90xb20 pc board footprint 4 3 6 1 5.08 3.20.2 2.4 1.4 2.0 5.30.1 7.20.2 5.08 0.9 5 2
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