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TECHNICAL DATA
IL91214A/B Tone/Pulse Dialer with 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.
D SUFFIX SOIC
ORDERING INFORMATION IL91214A/BN Plastic IL91214A/BD SOIC TA = -20 to 70 C for all packages
R1 KEYBOARD LOGIC R4 C1 C3 REDIAL MEMORY 32 DIGITS OUTPUT LOGIC
DP KT XMIT MUTE MODE OUT
VDD DTMF GENERATOR TONE MODE IN HK OSCI OSCO
INPUT LOGIC
CONTROL LOGIC
OSC.
Fig. 1. Block diagram.
IL91214 A, IL91214B
PIN DESCRIPITION
Pin #
HK M O D E IN
01 02
16 15
R4 R3 R2 R1 C3 C2 C1 DP
A
B
Designation HK MODE IN
Description Hook switch input MODE IN = VDD: pulse mode, 10 Hz, / = 1/2, MODE IN = VSS: tone mode, MODE IN = floating mode, 20 Hz, / = 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
O SCI 03 O SCO 04
IL91214A
1 2
1 2
14
13 12 11
Vss 05 Vdd 06 TO NE 07
X M IT M U T E
10 09
08
3 4 5 6 7 8
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
HK 01 MODE IN 02 OSCI 03 OSCO 04
Vss 05 Vdd 06 TONE 07
18 17 16
R4 R3 R2 R1 C3 C2 C1 DP
KT
15
14 13 12
11 10
XMIT MUTE
08
MODE OUT 09
9 10 11 12 13 14 15 16
OSCI OSCO VSS VDD TONE XMIT MUTE MODE OUT KT DP C1 C2 C3 R1 R2 R3 R4
Keyboard Assignment
1 4 7 */T 2 5 8 0 3 6 9 # F1 F2 P RD
IL91214B
R1 R2 R3 R4
C1
C2
C3
C4
1. */T - At Pulse mode this key works as Pulse -> DTMF key (T key), at DTMF mode the key works as *key. */T key will occupy one memory digit in either use. 2. F1 - Flash key. The break time is 297ms 3. F2 - Flash key for break time 640ms 4. P - Pause key (2.2 seconds) 5. RD - One key redial key 6. # - At pulse mode this key input is neglected, at DTMF mode this key works as # key.
IL91214 A, IL91214B
IL91214 A, IL91214B
DC electrical characteristics
Parameter Supply voltage, V Memory retention voltage, V Memory retention current, u Operation current, Standby current, u Input voltage, V Input current R1-R4, u Tone out voltage, V
(VDD = 3.5 V, VSS = 0 V, FOSC = 3.579 Hz, T = 25OC, unless otherwise specified) Symbol VDD VMR * IMR IDDP IDDT * ISO VIH VIL IR VOC VOR 584 456 0.8 VDD 0 115 730 570 5.3 5.3 1 5 876 684 Column Row VDD=3.5V RL=5 Min. 2.0 2.0 1 0.05 0.32 0.6 0.03 0.5 Typ Max. 5.5 5.5 0.4 1.0 2.0 0.05 10 VDD 0.2 VDD Condition Pulse mode Tone mode VDD = 1.0 V HK = VDD All outputs unloaded Pulse Tone HK=VD All outputs unloaded. No key selected. D =VSS VDD=1.5V VDD = 3.5 V
Sink current 0.9 IOL1 XMUTE, Sink current 1.1 IOL2 DP, Distortion, % DIS % * - in this mode IC functioning is not guaranteed.
VDD=3.5V, VOL=0.4V VDD=3.5V, VOL=0.4V
IL91214 A, IL91214B
AC characteristics
(VDD = 3.5 V, VSS = 0 V, FOSC = 3.579 Hz, T = 25OC, unless otherwise specified) Parameter Make time, s Break time, s Inter-digit pause time, s Pause time, s Auto-redial break time, s Symbol TM TIDP TPAU TAOBK Min. Typ 33.3 16.7 66.6 33.3 824 458 2.2 2.2 Max. Condition Dialing speed, pps 10 M/B=1/2 20 10 20 10 pps 20 pps M/B=1/2 M/B=1/2 M/B=1/2
Delay time key valid to signal out, s Key-in debounce, s Key-in tone duration, s Key-in tone frequency, Hz Minimal tone duration time, s Minimum tone inter-digit pause, s Redial tone duration, s Redial tone inter-digit duration, s
TD TKD TKTD FKT TMFD TTIDP TMFDR TTIDPR
0 21 23 437 94 96 94 96
Values of generated frequencies
R/C Frequency 697 770 852 941 1.209 1.336 1.477 Error, % + 0.31 + 0.19 + 0.03 + 0.10 + 0.57 - 0.32 - 0.35 Unit Hz Hz Hz Hz Hz Hz Hz FOSC = 3.579 Hz Conditions
R1 R2 R3 R4 1 2 3
Absolute maximum ratings
Parameter Supply voltage Input voltage Output voltage Output voltage (DP, XMIT MUTE). Tone output current Power dissipation Storage temperature VDD VIN VOUT VOUT ITONE PD TSTG Absolute maximum value 6.0V VSS-0.3V ~ VDD+0.3V VSS-0.3V ~ VDD+0.3V 1.2V 50 500 W -40 ~ +125
IL91214 A, IL91214B
1. Pulse dialing mode.
HK Key input
2
TKD : debouncing time 21 s XMIT MUTE TD DP TM TM TKTD (23 s), f = 437 Hz
1
3
TIDP TM
21 s
TB
2. Tone dialing mode.
HK Key input
4
XMIT MUTE TD 2.3 s TONE TTIDP MODE OUT TKD
3
*
9
TMFD 2.5 s
2.3 s
2.3 s
3. Redialing.
HK Key input RD XMIT MUTE TD TMFDR 2.5 s
TONE TTIDPR MODE OUT
IL91214 A, IL91214B
4. Switching mode operation (MODE IN control).
HK Key input 2 MODE IN 3 */T 6 4
DP TM MODE OUT TD XMIT MUTE TPAU TONE TMFD TIDP TIDP TM
5. Switching mode operation (*/T key entry).
HK Key input 2 MODE IN 3 */T 6 4
DP TM MODE OUT XMIT MUTE TD TIDP TPAU TMFD 2.5 TONE 2.5 TIDP TM
IL91214 A, IL91214B
6. One key redial using RD key (DTMF mode for example).
HK Key input 2 XMIT MUTE 3 RD
DP
TAOBK TD 2.5 s TD 2.5 s
TONE MODE OUT
7. Flash dialing
HK Key input F XMIT MUTE TFSH DP 6 4 3
MODE OUT TPAU TONE 2.5 2.5 s
IL91214 A, IL91214B
IL91214A/B
IL91214 A, IL91214B
N SUFFIX PLASTIC DIP (MS - 001BB)
A
Dimension, mm
16 9 B 1 8
Symbol A B C
MIN 18.67 6.1
MAX 19.69 7.11 5.33
F
L
D F
0.36 1.14 2.54 7.62 0 2.92 7.62 0.2 0.38
0.56 1.78
C -T- SEATING N G D 0.25 (0.010) M T K
PLANE
G H
H J
M
J K L M N
10 3.81 8.26 0.36
NOTES: 1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side.
D SUFFIX SOIC (MS - 012AC) Dimension, mm
A 16 9
Symbol A
MIN 9.8 3.8 1.35 0.33 0.4 1.27 5.72 0 0.1 0.19 5.8 0.25
MAX 10 4 1.75 0.51 1.27
H
B
P
B C
1
G
8 C R x 45
D F G
J F M
-TD 0.25 (0.010) M T C M K
SEATING PLANE
H J K M P R
8 0.25 0.25 6.2 0.5
NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B 0.25 mm (0.010) per side.
IL91214 A, IL91214B
N SUFFIX PLASTIC DIP (MS - 001AC)
A
Dimension, mm
18 10 B 1 9
Symbol A B C
MIN 22.35 6.1
MAX 23.37 7.11 5.33
F
L
D F
0.36 1.14 2.54 7.62 0 2.92 7.62 0.2 0.38
0.56 1.78
C -T- SEATING N G D 0.25 (0.010) M T K
PLANE
G H
H J
M
J K L M N
10 3.81 8.26 0.36
NOTES: 1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side.
D SUFFIX SOIC (MS - 013AD)
A 18 10
Dimension, mm Symbol MIN 10.1 7.4 2.35 0.33 0.4 1.27 MAX 10.5 7.6 2.65 0.51 1.27
H
B
A B
1
G
9 C R x 45
C D F
-TD 0.25 (0.010) M T C M K
SEATING PLANE
J
F
M
G H J K M P R 0 0.1 0.23 10 0.25
NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B 0.25 mm (0.010) per side.
8 0.3 0.32 10.65 0.75

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