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IL9151-3 fiches techniques PDF

IK Semiconductor - Pulse Dialer

Numéro de référence IL9151-3
Description Pulse Dialer
Fabricant IK Semiconductor 
Logo IK Semiconductor 





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IL9151-3 fiche technique
TECHNICAL DATA
PULSE DIALER
IL9151-3
The IL9151-3 pulse dialer is a monolithic CMOS integrated circuit which
converts pushbutton inputs to a series of pulses suitable for telephone dialing.
It is intended to replace mechanical telephone dialers and can operate directly
from telephone lines. CMOS technology is used to produced this device,
resulting in very low power requirements and high noise immunity. The
IL9151-3 can be easily interfaced with a variety of telephones, requiring only
a minimal number of external components.
Direct telephone line operation
4 x 3 matrix keyboard interface
Supply voltage range of 2.0 to 5.5 volts
Inexpensive RC oscillator
Low power standby mode for redialing
22-digit redial memory
Redial with either * or # key
Dialer reset for line power breaks > 200 ms
Selectable make/break ratio
High speed test capacity
ORDERING INFORMATION
IL9151-3N Plastic
TA = -20° to 70° C for package
PIN ASSIGNMENT
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LOGIC DIAGRAM
PIN 5 = VCC
PIN 12 = GND
KEYBOARD ASSIGNMENT
R1 1 2 3
R2 4 5 6
R3 7 8 9
R4 * 0 #
C1 C2 C3
(*,# : Redial)

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