MC145028 Просмотр технического описания (PDF) - Freescale Semiconductor

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Компоненты Описание

производитель

MC145028

Encoder and Decoder Pairs CMOS

Freescale Semiconductor 

V+

SEND

MC14011UB

TE

Dout

MC145026

RS

CTC

RTC

9

1000 pF

MC14011UB

220 kΩ

SWITCHES

220 kΩ

100 kΩ FOR APPROX. 4 kHz

47 kΩ FOR APPROX. 9 kHz

SELECT FOR

200 mA TO 300 mA

MLED81

USE OF 2 MLED81s

IS OPTIONAL

10 kΩ

MPSA13

OR

MPSW13

0.01 µF

ADJUST/SELECT FOR

f = 50 kHz (APPROX. 100 kΩ)

Figure 18. IRED Transmitter Using RC Oscillator to Generate Carrier Frequency

V+

1MΩ

X1

MC14011UB

MC14024

CLK

Q3

RESET

50 kHZ TO

DRIVER

TRANSISTOR

X1 = 400 kHz CERAMIC RESONATOR

PANASONIC EFD–A400K04B

OR EQUIVALENT

V+

MC14011UB

470 pF

470 pF

Dout

FROM MC145026

Figure 19. Using a Ceramic Resonator to Generate Carrier Frequency

MOTOROLA

MC145026•MC145027•MC145028•SC41343•SC41344

17

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