MC145436A Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MC145436A

Low-Power Dual Tone Multiple Frequency Receiver

Motorola => Freescale 

t Vin VDD

Ain

7

VDD

10 pF

100 kΩ

u Vin VDD

0.01 µF

Ain

7

VDD

10 pF

100 kΩ

Figure 2. Analog Input (Operational Information Based on PDIP Package)

3.58 MHz

Xin

Xout

1 MΩ

ATB

MC145436A

VDD

Xin

ATB

MC145436A

VDD

Xen

Xen

TO OTHER

MC145436As

Figure 3. Multiple MC145436As

COL 1

697 1

COL 2

2

COL 3

3

COL 4

A ROW 1

770 4

STD

DTMF 852 7

(Hz)

941 *

1209

5

6

B ROW 2

8

9

C ROW 3

0

#

D

1336 1477 1633

STD DTMF (Hz)

ROW 4

Figure 4. 4 × 4 Keyboard Matrix

MC145436A

6

MOTOROLA

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