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91214B Datasheet

IL91214B

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91214B pdf
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Tone/Pulse Dialer with Handsfree Control and Flash Function
IL91214A and IL91214B are tone/pulse dialers designed for providing standard DTMF or pulse
signals. The ICs enable to:
- generate standard DTMF or pulse signals of dialing as well as “flash” pulses;
- store and redial last number;
- generate pause in the transmitted package of dial signals;
ICs are designed to be used in telephone sets.
HK 01
MODE IN 02
OSCI 03
OSCO 04
Vss 05
Vdd 06
TONE 07
XMIT MUTE 08
16 R4
15 R3
14 R2
13 R1
12 C3
11 C2
10 C1
09 DP
HK 01
MODE IN 02
OSCI 03
OSCO 04
Vss 05
Vdd 06
TONE 07
XMIT MUTE 08
MODE OUT 09
18 R4
17 R3
16 R2
15 R1
14 C3
13 C2
12 C1
11 DP
10 KT
Fig. 1.
Pin configuration in package
PIN DESCRIPTION
Pin #
AB
11
22
33
44
55
66
77
88
9
10
9 11
10 12
11 13
12 14
13 15
14 16
15 17
16 18
Designation
HK
MODE IN
OSCI
OSCO
VSS
VDD
TONE
XMIT MUTE
MODE OUT
KT
DP
C1
C2
C3
R1
R2
R3
R4
Description
Hook switch input
MODE IN = VDD: pulse mode, 10 Hz,
М/В = 1/2,
MODE IN = VSS: tone mode,
MODE IN = floating mode,
20 Hz, М/В = 1/2
Oscillator input
Oscillator output
Ground
Supply output
Tone dialing output
Dialing transmission mute output
Mode output pin
Key-in tone output
Dialing pulse output
Keyboard column input
Keyboard column input
Keyboard column input
Keyboard row input
Keyboard row input
Keyboard row input
Keyboard row input
1
IK Semiconductor
IK Semiconductor



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