frequency control products type dfa s1 stratum iii revision 08 checked ne date 24.02.2006 page 10 stratum iii miniature surface mount tcxo dfa s1-khz (5 v) & dfa s1-lhz (3.3 v) key features 5 to 52 mhz stratum iii compliant over -40 to 85c up to 38.88 mhz sonet minimum clock compliant over -40 to 85c up to 52 mhz applications stratum iii & smc function dfa s1 nc 1 e / d 2 gnd 3 output 4 nc 5 vcc 6 9.10.2 14.80.3 1.4 1.0 5.08 6 5 4 3 2 1 5.9 +0.1 -0.2 2.54 8.9 5.08 1.27 pc board footprint type dfa s1-khz dfa s1-lhz frequency range 5 to 20 mhz, soon to 38.88 mhz (bsm & esm up to 52 mhz) standard frequencies 12.8, 16. 384, 19.44, 20, 34.368*, 38.88* & 44.736* 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 : overall holdover 24 hrs calibration type range code temperature vcc 5 % age ing stability stability drift @ 25c telcordia gr-1244 core stratu m iii or itu-t g.813 option 1 0 to 50c as3 0 to 70c as1001 -20 to 70c cs3 all types -40 to 85c es3 0.28 0.1 3 over 15 years 4.6 over 15 years 0.37 0.04 0.8 telcordia gr-253 core smc or itu-t g.813 option 2 0 to 70c bsm all types -40 to 85c esm 3.5 0.3 10 over 20 years 20 over 20 years 4.6 0.5 1 definitions 24 hours drift gr-1244-core, gr-253-core or g.813 24 hours holdover mode over full temperature range and vcc 0.5 % ordering code type + option code + frequency + model code example dfa s1-lhz 19.44 mhz as3
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