electrical characteristics ( load = 15 pf) parameter symbol min typical max unit supply voltage model 357s model 357l v cc 4.5 2.97 5.0 3.3 5.5 3.63 v v operating supply current model 357s model 357l i cc - - - - 40 50 ma ma output voltage levels model 357s logic '1' level v oh 0.9 * vcc - - v logic '0' level model 357l logic '1' level logic '0' level v ol v oh v ol - 0.9 * vcc - - - - 0.1 * vcc - 0.1 * vcc v v v output transition times rise time t r - - 5.0 ns fall time t f - - 5.0 ns start up time - - - 10.0 ms output duty cycle (@ 50% level) sym 45 - 55 % phase jitter (bandwidth 12k ? 20m hz) - - < 1 - ps rms output clock frequency model 357s model 357l f o 1.5 1.5 - - 45 45 mhz mhz control voltage model 357s model 357l v c 0.5 0.3 2.5 1.65 4.5 3.0 v v absolute pull range (note 1) model 357l, 357s (see ordering information) - 32,50,80 or 100 - - ppm linearity l - - 10 % transfer function - - positive - - input impedance z c 50 - - kohms modulation roll-off (@ -3db) - 10 - - khz notes 1. minimum guaranteed (voltage controlled) frequency shift over all conditions (temperature, aging, power supply and load) for the required lifetime at the average effective ambient operating temperature. model 357 5x7mm low cost surface mount vcxo stability to 25 ppm +3.3vdc or +5.0vdc operation hcmos output operating temperature to ?40c to +85c output enable tape & reel rev. x6
mechanical specifications cts ** yyww 357lac 38m8800 ** manufacturing site code. frequency shall be marked with 4 significant digits to the right if the ?m?. environmental specifications storage temperature: -55c to +125c temperature cycle: 400 cycles, -55c to +125c, 10 min dwell, 1 min transfer mechanical shock: 1,500g?s, 0.5ms, ? sinewave, 3 shocks each direction, in 3 planes sinusoidal vibration: 0.06? d.a., 10 to 55 hz and 20g?s, 55 to 2,000 hz, 3 cycles per plane gross leak: no leak shall appear while immersed in an fc40 or equivalent liquid at 125c for 20 seconds fine leak: mass spectrometer leak rates less than 2x10 -8 cc/sec air equivalent resistance to soldering heat: prod uct must survive 3 reflows of 260c peak, 10 seconds maximum high temperature operating bias: 2,000 hours at 125c, disregarding frequency shift frequency aging: < 5 ppm shift in 1,000 hours at 85c ordering information pin symbol functional description 1 vc control voltage 2 eoh tri-state enable 3 gnd circuit and package ground 4 output rf output 5 n.c. not connected internally 6 vcc supply voltage .079 [2.00] .079 [2.00] .200 [5.08] .100 [2.54] .071 [1.80] .173 [4.40] dimensions in inches [mm] suggested pad geometry model 357 5x7mm low cost surface mount vcxo 357 - ___m_______ _ example: 357lac ? 38m8800 supply voltage l = +3.3vdc s = +5.0vdc operating temperature range c = 0c to +70c i = -40c to +85c frequency in mhz m ? indicates decimal point. frequency shall be recorded with 4 significant digits minimum to the right of the ?m?. absolute pull range a = 32 ppm b = 50 ppm c = 80 ppm d = 100 ppm enable truth table pin 2 pin 4 ?1? output ?0? high imp. open output rev. x6
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