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SC41344P 数据表(PDF) 17 Page - Freescale Semiconductor, Inc |
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SC41344P 数据表(HTML) 17 Page - Freescale Semiconductor, Inc |
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17 / 20 page ![]() MC145026 •MC145027•MC145028•SC41343•SC41344 MOTOROLA 17 10 k Ω 220 k Ω SEND TE 9 RS CTC RTC MC145026 SWITCHES 100 k Ω FOR APPROX. 4 kHz 47 k Ω FOR APPROX. 9 kHz 1000 pF Dout MC14011UB MC14011UB 220 k Ω 0.01 µF SELECT FOR 200 mA TO 300 mA MLED81 USE OF 2 MLED81s IS OPTIONAL MPSA13 OR MPSW13 ADJUST/SELECT FOR f = 50 kHz (APPROX. 100 k Ω) Figure 18. IRED Transmitter Using RC Oscillator to Generate Carrier Frequency V+ V+ 50 kHZ TO DRIVER TRANSISTOR X1 = 400 kHz CERAMIC RESONATOR PANASONIC EFD–A400K04B OR EQUIVALENT MC14024 CLK X1 470 pF MC14011UB Dout FROM MC145026 1M Ω 470 pF Q3 Figure 19. Using a Ceramic Resonator to Generate Carrier Frequency RESET V+ MC14011UB |
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