Door Bell Generator

The RT0301/RT0302 is a CMOS Design for Door Bell application

Features

Low Operator Voltage 3V ~ 4.5V

Auto Power down function

CMOS process

On-Chip RC oscillator

Low stand by current at 1 uA

8-Pin DIP or chip form available

Electrical Characteristics

Pin Description

Rato

RT0301/RT0302

2000.04.11

Pin Diagram

Symbol

Pin

Description

Pin

I/O

TG

Trigger Single Input

1

I

E1

"Ding" Freq

2

O

"Dong" Freq

E2

GND

Ground

Frequency put

Sound output

Frequency In

Power Source Input

SOUT

OSCO

OSCI

Vcc

3

4

5

6

7

8

I

O

O

Characteristics

Symbol Min. Typ. Max. Unit

Vcc

Iop

Isb

Ioc

Fop

Temp

-

-

-

1

-

0

3

0.1

1

-

50

25

4.5

0.5

5

-

-

70

V

mA

uA

mA

KHz

1

Vcc=3V , Temp.=25

O

I

I

Operating Voltage

Operating Current

Quiescent Current

SOUT Driving Current

Oscillator Freq

Operating Temp

Remarks

No Load

P/N

TIMES

RT0301

1

RT0302

2

TG

E1

E2

GND

1

2

3

4

8

7

6

5

VCC

OSCI

SOUT

OSCO

RT0301/RT0302