sm7745h cmos series 4 pad 7 x 5mm leadless surface mount ceramic clock oscillato r cmos with enable/ disable or optional stand by mode 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, 2.5 volts and 1.8 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 als o available (see waveform 1) output load standard load is 15 pf (typ. 1 asic) maximum, see test circu it 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 numbe r may be 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% x: supply voltage of 1.8 volts 5% (consult factory) 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 a nd load packaging tray or 16mm tape 8mm pitch due to part size and factory abilities, part marking may var y from lot to lot and may contain our part number or an inte rnal code. non-std output load blank = 15 pf max, 30 = 30 pf max, 50 = 50 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 mar 2004 optional stand by mode portions of the part number that appear after the frequency may not be marked on part (c of c provided) max. icc (ma) max. tr & tf (ns) frequency range (mhz) 1.8v 1.8v 1.500 ? 39.999 10 5.0 40.000 ? 69.999 25 3.0 w/ 15pf load w/ 15pf load 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 1 2 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 due to part size and factory abilities, part marking may var y from lot to lot and may contain our part number or an internal code. 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 1 2 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 7xywwx 25.000m ple esv marking example and explanation ple = pletronics 7 = package code x = frequency stability ywwx = date code frequency in mhz esv = applicable specs (some internal)
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