exo-3 cmos crystal oscillator features ? since it has a frequency dividing function, it is able to obtain a frequency division of 1/2-1/2 8 (1/256). ? the symmetry of frequency divided output is within 50 plus/minus 2%. ? the oscillation start time has the fast starting characteristic of being 1.5msec. or less. ? the pin arrangement is dip 8pin. specifications table 1 original frequencies pin connection outline item type exo-3 frequency range 12~24.576mhz standard frequency table 1 frequency stability 100 10 6 operating temperature range -10~+70 : storage temperature range -40~+85 : supply voltage 5v 0.5v current 20ma max. load 50pf output level v oh : v dd -0.5v/v ol : 0.5v max. output symmetry 40~60% rise time/fall time 15ns max. start-up time 1.5ms max. vibration 10~55hz amplitude 1.5mm, 50~2000hz amplitude 20g cycle 1 minute, 3 direction, 1 hour each shock 1000g weight 0.6g frequency (mhz)1/2 0 12.000 17.734476 12.288 18.432 12.800 19.0909 14.31818 19.200 14.500 19.6608 14.7456 20.000 14.9105 20.48 15.000 21.47727 15.360 22.000 15.9744 22.1184 16.000 24.000 16.128 24.576 16.257 16.384 l l l h fo clock fo 1/2 clock l l h h fo clock fo 1/2 2 clock l h l h fo clock fo 1/2 3 clock l h h h fo clock fo 1/2 4 clock h l l h fo clock fo 1/2 5 clock h l h h fo clock fo 1/2 6 clock h h l h fo clock fo 1/2 7 clock h h h h fo clock fo 1/2 8 clock ll l input output select st f original frequency d divided wave form cba settings of the frequency division output dimensions(mm) v dd cba 8765 1234 f (output) exo3 5e 16.000m kss japan (divider select) d st gnd 1.f 2.d 3.st 4.gnd 5.a ? 6.b ? 7.c ? 8.v dd outputs the original fre- quency (fo) of the internal quartz crystal. outputs the frequency of programmed dividing ratio (fo/2 n ). possible to be oscillated when set to high level and stopped in oscillation when set to low level. when this function is not needed, be sure to set the standby pin to the high level. used to program the divid- ing ratio for the original fre- quency. supply voltage 876 5 123 4 12.8max 7.0max 5.08 max min 2.5 1.6 0~15 (mm) 2.54 0.25 7.62 0.3 0 . 6 m a x 0.5 0.15 1.524 0.51min exo-3
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