357 beloit street, p.o. box 457, burlington, wi 53105-0457 u.s.a. phone 262/763-3591 fax 262/763-2881 email: nelsales@nelfc.com www.nelfc.com differential positive ecl (dpecl) sk-2910 series description the sk-2910 series of quartz crystal oscillators provide dpecl fast edge compatible signals. this device is to operate using positive voltage and uses multiple ground pins for improved signal integrity. this device is intended to operate on positive voltage for pecl applications. features ? wide frequency range?122.0mhz to 300.0mhz ? user specified tolerance available ? case at electrical ground ? will withstand vapor phase temperatures of 253c for 4 minutes maximum ? all metal, resistance weld, hermetically sealed package ? high shock resistance, to 1500g ? low jitter ? overtone technology ? high q crystal actively tuned oscillator circuit ? power supply decoupling internal ? dual ground plane for added stability ? no internal pll avoids cascading pll problems ? high frequencies due to proprietary design electrical connection pin connection 1 v cc 2 v ee case 6 v ee case 7 output 8 /output 9 v ee case 13 v ee case 14 enable/disable crystal clock oscillators data sheet 0012g rev. c
357 beloit street, p.o. box 457, burlington, wi 53105-0457 u.s.a. phone 262/763-3591 fax 262/763-2881 email: nelsales@nelfc.com www.nelfc.com sk-2910 series continued differential positive ecl (dpecl) operating conditions and output characteristics electrical characteristics parameter symbol conditions min typical max frequency ----- ----- 122.0mhz ----- 300.0mhz duty cycle ----- @ 50% points 45/55% ----- 55/45% logic 0 (2) v ol ----- v cc -1.95v ----- v cc -1.60v logic 1 (2) v oh ----- v cc -1.02v ----- v cc -0.74v rise & fall time tr,tf 20-80%v o with 50 ohm load to v cc -2v ----- 350 psec 600 psec jitter, rms (3) ----- ----- ----- ----- 5 psec enable voltage (4) ---- with v ee =0v 0v ----- 1.0v disable voltage ----- with v ee =0v 3.0v ----- v cc frequency stability (1) df/f overall conditions including: -100ppm ----- +100ppm voltage, calibration, temp., 10 yr aging, shock, vibration general characteristics parameter symbol conditions min typical max supply voltage v cc ----- 4.75v 5.0v 5.25v supply current i cc 50 ohm termination 0.0 ma ----- 120 ma to 2.00v below v cc output current i o low level output current 0.0 ma ----- 50.0 ma operating temperature t a ------ 0c ----- 70c storage temperature t s ----- -55c ----- 125c input: logic high (ecl) - disables v ee or open - enables lead temperature t l soldering, 10 sec. ----- ----- 300c load 50 ohm to v cc -2v or thevenin equivalent, bias required start-up time t s ----- ----- 2 ms 10 ms environmental and mechanical characteristics mechanical shock per mil-std-202, method 213, condition e thermal shock per mil-std-833, method 1011, condition a vibration 0.060" double amplitude 10 hz to 55 hz, 35g?s 55hz to 2000 hz soldering condition 300c for 10 seconds hermetic seal leak rate less than 1 x 10 -8 atm.cc/sec of helium footnotes: 1) standard frequency stability (20,25,50ppm & others available) 2) v ol , v oh , referenced to ground 3) jitter performance is frequency dependent. please contact factory for full characterization. 4) open to enable pin also enables to output. rev. c crystal clock oscillators sk - a 291x - freq package code tolerance/performance hk leaded 8 pin (14pin) 0 100ppm 0-70c sk 8 pin (14 pin) smd gull 1 50ppm 0-70c wing 7 25ppm 0-70c input voltage 9 customer specific code specification a 20ppm 0-70c a 3.3v b 50ppm -40 to +85c 5v c 100ppm -40 to +85c creating a part number data sheet 0012g
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