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BU239XK-E2N Datasheet(PDF) 2 Page - Rohm |
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BU239XK-E2N Datasheet(HTML) 2 Page - Rohm |
2 / 17 page 2/16 ●Recommended Operating Range Parameter Symbol Limit Unit Supply voltage VDD 3.0~3.6 V Input H voltage VINH 0.8VDD~VDD V Input L voltage VINL 0.0~0.2VDD V Operating temperature Topr -5~70 ℃ Output load CL 15(MAX) pF ● Electrical characteristics BU2394KN(VDD=3.3V, Ta=25℃, unless otherwise specified.) XTAL_SEL=H with crystal oscillator at a frequency of 28.636363 MHz, while XTAL_SEL=L at 14.318182 MHz Parameter Symbol Limit Unit Condition Min. Typ. Max. 【Action circuit current】 IDD - 45 60 mA At no load 【Output H voltage】 CLK1 VOH1 VDD-0.5 VDD-0.2 - V When current load = - 9.0mA CLK2 VOH2 VDD-0.5 VDD-0.2 - V When current load = - 7.0mA REF_CLK VOHR VDD-0.5 VDD-0.2 - V When current load = - 4.5mA 【Output L voltage】 CLK1 VOL1 - 0.2 0.5 V When current load =11mA CLK2 VOL2 - 0.2 0.5 V When current load =9.0mA REF_CLK VOLR - 0.2 0.5 V When current load =5.5mA 【Pull-Up resistance value】 FS1, FS2, FS3, CLK2ON, XTAL_SEL Pull-Up R 125 250 375 Ω Specified by a current value running when a voltage of 0V is applied to a measuring pin. (R=VDD/I) 【Output frequency】 CLK1 FS2:H FS3:H Fclk1-1 - 135.000000 - MHz XTAL×(1188/63)/2 CLK1 FS2:H FS3:L Fclk1-2 - 108.000000 - MHz XTAL×(1056/70)/2 CLK1 FS2:L FS3:L Fclk1-3 - 98.181818 - MHz XTAL×(864/63)/2 CLK1 FS2:L FS3:H Fclk1-4 - 110.000000 - MHz XTAL×(968/63)/2 CLK2 Fclk2-2 - 48.008022 - MHz XTAL×(228/17)/4 REF_CLK FS1:H Fref1-1 - 14.318182 - MHz XTAL Output REF_CLK FS1:L Fref1-2 - 17.734450 - MHz XTAL×(706/57)/10 【Output waveform】 Duty1 100MHz or less Duty1 45 50 55 % Measured at a voltage of 1/2 of VDD Duty2 100MHz or more Duty2 - 50 - % Measured at a voltage of 1/2 of VDD Rise time Tr - 2.5 - nsec Period of transition time required for the output to reach 80% from 20% of VDD. Fall time Tf - 2.5 - nsec Period of transition time required for the output to reach 20% from 80% of VDD. 【Jitter】 Period-Jitter 1σ P-J1σ - 30 - psec ※1 Period-Jitter MIN-MAX P-J MIN-MAX - 180 - psec ※2 【Output Lock-Time】 Tlock - - 1 msec ※3 Note) The output frequency is determined by the arithmetic (frequency division) expression of a frequency input to XTALIN. If the input frequency is set to values shown below, the output frequency will be as listed above. When XTAL_SEL is set to H, the input frequency on XTALIN will be 28.636363 MHz. When XTAL_SEL is set to L, the input frequency on XTALIN will be 14.318182 MHz. |
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