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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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FS7755-IS датащи(PDF) 9 Page - Fortune Semiconductor Corp. |
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FS7755-IS датащи(HTML) 9 Page - Fortune Semiconductor Corp. |
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9 / 22 page  FS7755 Rev. 1.1 9/22 11. Timing Characteristics1, 2 (AVDD = DVDD = 5V±5%, AGND = DGND = 0V, On-Chip Reference, CLKIN = 3.579545MHz, Tmin to Tmax = –40℃ to +85℃.) Parameter Specifications Unit Test Conditions/Comments t1 3 275 ms F1 and F2 Pulse width (Logic Low) t2 See Table Ⅲ sec Output Pulse Period. See Transfer Function section. t3 1/2 t2 sec Time between F1 Falling Edge and F2 Falling Edge. t4 3, 4 90 ms CF Pulse Width (Logic High). t5 See Table Ⅳ sec CF Pulse Period. See Transfer Function section. t6 CLKIN/4 sec Minimum Time between F1 and F2 Pulse. Note: 1Sample tested during initial release and after any redesign or process changes that may affect this parameter. 2See Fig4. 3The pulse widths of F1, F2, and CF are not fixed for higher output frequencies. See Frequency Outputs section. 4The CF pulse is always 18μs in the high frequency mode. See Frequency Outputs section and Table Ⅳ. Specifications subject to change without notice. F1 F2 CF t 1 t 2 t 3 t 4 t 5 t 6 Fig4 Timing Characteristics for Impulse Output |
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