sm crystal oscillator phone: +86 (10) 5820-3910 fax: +86 (10) 5820-3915 e-mail: sales@vanlong.com web: http://www.vanlong.com ? 2007 by vanlong technology co., ltd. po321 fixed frequency crystal oscillator po321 ? ttl and cmos compatible output ? tight symmetry 45 to 55% available ? typical 5.0 x 3.2 x 1.2mm ceramic smd package ? complies with directive 2002/95/ec (rohs compliant) specifications outline drawing frequency range: 0.3456mhz ~ 125.00mhz operating temperature: -10 c ~ +60 c - b -20 c ~ +70 c - c -40 c ~ +85 c - l storage temperature: -55 c ~ +125 c frequency stability: 50 ppm - h 25 ppm - e 20 ppm - c supply voltage: 5.0v dd - c 3.3v dd - e 2.5v dd - h supply current: 5.0 3.3 2.5 (v dd ) 0.3456mhz ~ 1.5mhz 7 5 5 (ma) 1.5mhz ~ 20mhz 10 7 7 (ma) 20mhz ~ 50mhz 30 20 15 (ma) 50mhz ~ 75mhz 40 30 20 (ma) > 75mhz n/a 30 25 (ma) output level: output high (logic ?1?) 90% v dd output low (logic ?0?) 10% v dd marking: line 1: frequency in mhz line 2: date code output waveform: ttl - b ttl/50pf - r cmos/15pf - k cmos/50pf - g transition times: 5.0 3.3 2.5 (v dc ) 0.3456mhz ~ 20mhz 8 10 10 (nsec) all dimensions are in mm 20mhz ~ 50mhz 5 6 6 (nsec) 50mhz ~ 75mhz 2 3 3 (nsec) > 75mhz n/a 3 3 (nsec) symmetry or duty cycle (%): 45 ~ 50 ordering information start-up time: 8 msec max. pin connection #1 nc or e/d #2 ground #3 output #4 supply v dd product code + operating temperature code + stability code + supply voltage code + outpu t waveform code + tri-state code or none + frequency. i.e. po321chekt-40.0mhz tri-state function: with tri-state - t (input to pin #1) absolute clock period jitter: 40 psec note: 1. other frequencies, stabilities, and operating temperature ranges available. consult vtc support for specific requirements. 2. not all combinations of the above, stabilities, and temperature ranges are available. consult vtc support if your requirement is not standard. 3 . all specifications subject to change without notice.
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