SM7745H cmos series 4 pad 7 x 5mm leadless surface mount ceramic clock oscillator cmos with enable/ disable or optional stand by mode (3.3 v) fundamental or 3rd overtone crystal used 1.500 mhz ? 69.999 mhz standard specifications overall frequency stability SM7745H: 50 ppm, sm7744h: 25 ppm, sm7720h: 20 ppm over operating temp. range operating temperature range supply voltage (vcc) 5.0 volts, 3.3 volts and 2.5 volts available, .01 f bypass cap recommended symmetry (duty cycle) 40/60 to 60/40% is standard, but 45/55% at 50% of vcc is also available (see waveform 1) output load standard load is 15 pf (typ. 1 asic) maximum, see test circuit 2 (consult factory for heavier loads) enable/disable option (e/d) output enabled when pin #1 is open or at logic ?1?; output disabled when pin #1 is at logic ?0?. max. supply current max. rise and fall time frequency range (mhz) 2.5v, 3.3v 5.0v 2.5v to 5.0v 1.500 ? 10.999 7 10 5.0 11.000 ? 23.999 15 15 5.0 24.000 ? 29.999 15 20 5.0 30.000 ? 45.999 20 30 5.0 part numbering guide model frequency stability 45 = 50 ppm 44 = 25 ppm frequency in mhz special specifications (choose all that apply) sm77 45 h v - 50.0m - sb - 30 - xxx (internal code or blank) consult factory for available frequencies and specs. not all options available for all frequencies. a special part number may b e assigned. mechanical: not to scale inches (mm) solder pads 46.000 ? 69.999 25 45 4.5 0 to +70 c is standard, but can be extended to - 40 to +85 c for certain frequencies y: std specs (5.0v 10% , 0 to +70 c, 40/60% symmetry) e: extended operating temperature range (- 40 to +85 c) s: 45/55% symmetry at 50% of vcc v: supply voltage of 3.3 volts w: supply voltage of 2.5 volts 5% 10% (425) 776 - 1880, fax: (425) 776- 2760, ple- sales@pletronics.com, www.pletronics.com 12 pl tronics, inc. icc (ma) w/ 15pf load tr & tf (ns) w/ 15pf load frequency stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load packaging tray or 16mm tape 8mm pitch due to part size and factory abilities, part marking may vary from lot to lot and may contain our part number or an internal co de. non-std output load blank = 15 pf max, 30 = 30 pf max logic levels logic ?1? 90% of vcc min; logic ?0? 10% of vcc max 20 = 20 ppm pl tronics , inc. 19013 36th ave. w, suite h lynnwood, wa 98036 usa manufacturer of high quality frequency control products . cmos < 80 mhz page 11a - 16 aug 2005 optional stand by mode (3.3 volt only) portions of the part number that appear after the frequency may not be marked on part (c of c provided) m .01 f bypass capacitor max 0.200 (5.08) 0.075 (1.9) 0.276 (7.0 .15) 0.197 (5.0 .15) 0.055 (1.4) 0.024 (0.60) 0.050 (1.27) 0.004 (0.10) 1 4 12 3 4 0.200 (5.08) 0.079 (2.0) 0.087 (2.2) 0.055 (1.4) 0.145 (3.68) 3 2 1 e/d or sb 2 gnd 3 out 4 vcc pin signal ( datasheet : )
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