pe3145b pecl series differential pecl output without enable/ disable function 10.00 mhz ? 170.00 mhz standard specifications overall frequency stability operating temperature range 0 to +80 c is standard, but can be extended to - 40 to +85 c for certain frequencies consult factory for available frequencies and specs. not all options available for all frequencies. a special part numbe r may be assigned. see pe1145t for higher frequencies supply voltage (vcc) 3.3 volts 10% standard, but 5.0 volts or 2.5 volts also available output waveform pecl with differential output logic ? 1 ? vcc - 1.025 volts minimum logic ? 0 ? vcc - 1.620 volts maximum output load output must be terminated into 50 ohms to (vcc - 2.0 v). see test circuit 5 and note 1. part numbering guide model frequency stability 45 = 50 ppm 44 = 25 ppm frequency in mhz special specifications (choose all that apply) e: extended operating temperature range (- 40 to +85 c) f: 47.5 /52.5% symmetry at 50% of vcc v: supply voltage of 3.3 volts 10% w: supply voltage of 2.5 volts 5 % y: supply voltage of 5.0 volts 10% pe31 45 b y -- 70.0m 20 = 20 ppm symmetry tr & tf 45/55% to 55/45% at 50% of vcc level standard, tighter symme try available 1.0 ns max (20 to 80%) for 70 mhz. for < 70 mhz, consult factory 3 60 to 70 ma typical, 90 ma maximum for 70 mhz. for < 70 mhz, consult factory 3 supply current (icc) 1 ps rms maximum, from 12 khz to 20 mhz from carrier for 3 70 mhz. for < 70 mhz, consult factory jitter in the typical pecl 100k logic output voh is 2.35 volts and vol is 1.60 volts at 3.3 vcc. the center voltage of the pecl is the refore1.975 volts. if a 50 ohm resistor is placed between the output and vcc ? 2 volts (1.3 volts), the current through the resistor is (1 .975 ? 1.3) / 50 = 13.5 ma. the same load can be simulated by a resistor of 147 1% ohms to ground (1.975 / 0.0135 = 146.29 ohms). if additi onal load current is placed on the output, its load current must be subtracted from the 13.5 ma to calculate a new load resistor. using similar calc ulations, use 274 1% ohms to ground for 5.0v operation. (425) 776 - 1880, fax: (425) 776 - 2760, ple - sales@pletronics.com, www.pletronics.com pl tronics, inc. frequency stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration a nd load 50 ppm, 25 ppm, 20 ppm over operating temperature range 4 pad leadless surface mount clock oscillator packaging tray or 24mm tape, 16mm pitch note 1: (see waveform 2) mechanical: not to scale inches (mm) 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. may 2002 vcc gnd q out qn out vcc e/d gnd q out n.c. qn .400 (10.16) max .560 (14.23) max vcc e/d gnd q out 3 2 4 5 6 1 2 3 4 1 3 2 4 5 6 1 ple .200 (5.08) 1 2 n.c. qn out 3 6 5 4 .125 (3.17) max .23 (5.8) .05 (1.3) .12 (3.0) solder pads (remove center pads for pe3145b) pe1145b series pe1145b pe3145b pe3345b pe3x45b series possible pinout options, consult factory for alternate pinou ts pl tronics , inc. 19013 36th ave. w, suite h lynnwood, wa 98036 usa manufacturer of high quality frequency control products .
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