91214B.pdf 데이터시트 (총 9 페이지) - 파일 다운로드 91214B 데이타시트 다운로드

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TECHNIwCwwA.DLataSDheAet4UT.cAom
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

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IL91214 Aww,wI.DLat9aS1he2et41U4.coBm
R1
KEYBOARD
LOGIC
R4
C1
C3
MODE IN
HK
INPUT
LOGIC
REDIAL MEMORY
32 DIGITS
CONTROL
LOGIC
OUTPUT
LOGIC
DTMF
GENERATOR
OSC.
DP
KT
XMIT MUTE
MODE OUT
VDD
TONE
OSCI
OSCO
Fig. 2. Block diagram.
2

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IL91214 Aww,wI.DLat9aS1he2et41U4.coBm
DC electrical characteristics
(VDD = 3.5 V, VSS = 0 V, FOSC = 3.579 МHz, T = 25OC, unless otherwise specified)
Parameter
Supply voltage, V
Memory retention voltage, V
Memory retention current, uА
Operation current, мА
Symbol
VDD
VMR
* IMR
IDDP
IDDT
Min.
2.0
2.0
1
Standby current, uА
* ISO
Input voltage, V
VIH 0.8 VDD
VIL 0
Input current
R1-R4, uА
IR
Tone out voltage, мV
VOC 584
VOR 456
Sink current
XMUTE, мА
IOL1 0.9
Sink current
DP, мА
IOL2 1.1
Distortion, %
DIS %
* - in this mode IC functioning is not guaranteed.
Typ
0.05
0.32
0.6
0.03
0.5
115
730
570
5.3
5.3
1
Max.
5.5
5.5
Condition
Pulse mode
Tone mode
0.4
1.0
2.0
0.05
10
VDD
0.2 VDD
VDD = 1.0 V
HK = VDD
Pulse
All outputs
unloaded
Tone
HK=VDD
НК=VSS
All outputs unloaded.
No key selected.
VDD=1.5V
VDD = 3.5 V
876 Column VDD=3.5V
684 Row
RL=5К
VDD=3.5V, VOL=0.4V
VDD=3.5V, VOL=0.4V
5
AC characteristics
(VDD = 3.5 V, VSS = 0 V, FOSC = 3.579 МHz, T = 25OC, unless otherwise specified)
Condition
Parameter
Symbol
Min. Typ Max.
Dialing speed,
pps
Make time, мs
TM
33.3
16.7
10 M/B=1/2
20 M/B=1/2
Break time, мs
ТВ
66.6
33.3
10 M/B=1/2
20 M/B=1/2
Inter-digit pause time, мs
Pause time, s
Auto-redial break time, s
TIDP
TPAU
TAOBK
824
458
2.2
2.2
10 pps
20 pps
3