IL91210EN Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – TONE/PULSEDIALER

IL91210EN
TONE/PULSEDIALER
The IL91210EN is a single-chip, silicon gate, CMOS integrated circuit with an on-chip oscillator for a
3.58 MHz crystal or ceramic resonator. It provides dialing pulse (DP) or dual tone multi-frequency
(DTMF) dialing. A standard 4x4 matrix keyboard can be used to support either DP or DTMF modes.
Up to 32 digits can be saved in the on-chip RAM for reading. In the DTMF mode, minimum tone
duration and minimum intertone pause are provided for rapid
dialing. Maximum tone duration is dependent upon the key
depression time in manual dialing.
• One touch redial operation
• Tone/Pulse switchable
• 32-digit capacity for redialing
• Built-in power up reset circuit
• PABX auto-pause is 2.2 second
• DTMF Timing:
Manual dialing: minimum duration for bursts and pauses
Redialing: calibrated timing
ORDERING INFORMATION
IL91210EN
T_A = -20° to 70° C
• Wide operating voltage range: 2 V to 5.5 V
• Uses inexpensive ceramic resonator (3.58 MHz)
• Digits dialed manually after redialing are cascadable and stored as additional digits for the next
redialing
• Automatic mixed redialing (last number redial) of pulse to DTMF with multiple automatic access
pauses
• Four extra function keys: flash, pause, redial and DP or DTMF mixed dialing
• Four-by-four (or 2 of 8) keyboard can be used
• Low standby current
• Dial Pulse Rate: 10 pps
DC ELECTRICAL CHARACTERISTICS(V_CC =3.5 V,F_OSC=3.579 MHz, T_OP=+25°C)
Symbol
Parameter
Test Conditions
Guaranteed Limits
Unit
Min
Max
V_CC
DC Supply Voltage
2.0
5.5
V
V_MR
Minimum Memory
Retention Voltage
V_OC
Tone Output Voltage
V_OR
Column
Row
V_CC = 3.5 V
R_L = 5KΩ
1.0
V
584
876
mVp-p
456
684
I_OL1
Minimum Output Current, V_OL = 0.4 V
XMUTE, KT, MODEOUT
0.5
mA
I_OL2
Minimum Output Sink
Current, DP
V_OL = 0.4 V
0.6
mA
I_MR
Memory Retention Current V_CC = 1.0 V, HK = V_CC
All outputs unloaded
0.6
µA
I_CCP Maximum Operation
I_CCT
Current
Pulse mode
Tone mode
All outputs
unloaded
1.0
mA
2.0
I_SBP
Maximum Standby
I_SBT
Current
Pulse mode
HK=V_CC=1.5 V
Tone mode
HK=GND
All outputs
unloaded.
No key
selected
0.05
µA
15
Korzhenevskogo 12, Minsk, 220064, Republic of
Belarus
Fax: [phone],
Phone: [phone],
277 69 16
E-mail: [e-mail]
URL: www.bms.by