41 ecs, inc. international 1105 s. ridgeview, olathe, ks 66062 ? 913-782-7787 ? 800-237-1041 ? fax 913-782-6991 ? www.ecsxtal.com smd oscillators smd oscillators features ? 3.3 or 5.0v version ? 1.5 mm profile ? low power consumption ? standby function ? seam welded package ? tape & reel (1,000 pcs.) ecs-3951m/3953m series smd clock oscillator * ecs-3953m is also compatible with a supply voltage of +3.0v dc 0.3v ** inclusive of 25?c tolerance, operating temperature range, input voltage change, load change, aging shock and vibration. *** an internal pullup resistor from pin 1 to 4 allows active output if pin 1 is left open. note: a 0.01 f bypass capacitor should be placed between v cc (pin 4) and gnd (pin 2) to minimize power line noise. 7.5 max. 5.0 max. 1.5 max. 2.6 1 2 3 4 5.08 max. 1 3 2 4 0.6 1.4 0.1 0.05 figure 1) ecs-3951m/3953m top, side and bottom views package dimensions (mm) pin connections #1 standby #2 gnd #3 output #4 v cc the ecs-3951m(5v) and ecs-3953m(3.3v) series are miniature, crystal controlled, low current clock oscillators in a ceramic smd package. package is seam welded with a metal lid. the low profile package is ideal for todays advanced portable pc and instrumentation designs. 5.08 4.20 2.00 1.40 0.01 f figure 2) land pattern ecs-3951m/3953m standby control voltage pin #1 = open*** #3 = oscillation pin #1 = +2.2v min #3 = oscillation pin #1 = 0.8v max #3 = high impedance sample part number: ecs-3951m-500-b part numbering guide frequency (50.0 mhz) stability tolerance (50 ppm) ecs-3951m C 500 C b operating conditions/electrical characteristics ecs-3951m (5v) ecs-3953m (3.3v)* parameters conditions min typ max min typ max units frequency range 1.800 125.0 1.800 125.00 mhz operating -10 +70 -10 +70 ?c temperature range storage -55 +125 -55 +125 ?c supply voltage +4.5 +5.0 +5.5 +3.0 +3.3 +3.6 v dc standard -100 40 +100 C100 40 +100 ppm option (b) -50 +50 -50 +50 ppm frequency stability** option (c) -30 +30 -30 +30 ppm 1.8 ~ 36.0 mhz 20 15 ma 36.0 ~ 70.0 mhz 55 25 ma 70.0 ~ 100.0 mhz 60 30 ma input current 100.0 ~ 125.0 mhz 65 30 output symmetry @ 1/2 v cc level 40/60 50 4 60/40 40/60 50 4 60/40 % 1.8 ~ 70.0 mhz 15 5 ns rise and fall times 70.0 ~ 125.0 mhz 5 5 ns logic 0 level v cc x 0.1v max. logic 1 level v cc x 0.9v min. load hcmos 30 15 pf 1.8 ~ 36.0 mhz 5 5 ms 36.0 ~ 70.0 mhz 10 10 ms start-up time 70.0 ~ 100.0 mhz 15 15 ms vol=0.5v/0.33 4 4 ma output current (iol) (ioh) vol=4.5v/2.97v -4 -4 ma standby current v cc x 0.1v max. 15 10 a enable/disable time 100 100 ns
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