MC145028 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC145028

Encoder and Decoder Pairs CMOS

Freescale Semiconductor 

10 µF 22 kΩ

ÉÉÉÉ

OPTICAL

FILTER

1N914

1N914

100 kΩ

–

A3

V1 +

1/4 MC34074

10 kΩ

A1

10 kΩ

2N5088

10 kΩ

2N5086

100 Ω

1 µF

6.8 kΩ

+5 V

10 µF

2N5088

1 mH — TOKO TYPE 7PA OR 10PA

OR EQUIVALENT

0.01 µF

0.01 µF 1 kΩ

V1

2.2 kΩ

–

A2

+

1/4 MC34074

4.7 kΩ

0.01 µF

1 MΩ

10 kΩ

V2

+

A4

–

1/4 MC34074

1N914 1 kΩ

1000 pF

47 kΩ

1 MΩ

22 kΩ

V3

+

A5

–

1/4 MC34074

1000 pF

390 kΩ FOR APPROX. 4 kHz

180 kΩ FOR APPROX. 9 kHz

C1

Din

R1

MC145027/28

R2/C2

VT

VDD VSS

+5 V

9 FOR MC145027

5 FOR MC145028

ADDRESS

SWITCHES

0.01 µF

750 kΩ FOR APPROX. 4 kHz

360 kΩ FOR APPROX. 9 kHz

+5 V

4.7 kΩ

390 Ω

DATA OUT

4

MC145027 ONLY

10 µF 10 µF

10 µF

2.2 kΩ

2.7 kΩ

V2 ≈ 2.7 V

V1 ≈ 2.5 V

V3 ≈ 1.3 V

Figure 20. Infrared Receiver

MC145026•MC145027•MC145028•SC41343•SC41344

18

MOTOROLA

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