IL91210E Datasheet, PDF (1/11 Pages) Integral Corp. – Tone/Pulse Dialer High-Performance Silicon-Gate CMOS

TECHNICAL DATA
Tone/Pulse Dialer
High-Performance Silicon-Gate CMOS
IL91210E
The IL91210E 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
• Automatic mixed redialing (last number redial) of pulse to DTMF
with multiple automatic access pauses
ORDERING INFORMATION
IL91210EN
T_A = -20° to 70° C
• PABX auto-pause is 2.2 second
• DTMF Timing:
Manual dialing: minimum duration for bursts and pauses
Redialing: calibrated timing
• Wide operating voltage range: 2 V to 5.5 V
• Digits dialed manually after redialing are cascadable and stored as additional digits for the next redialing
• Uses inexpensive ceramic resonator (3.58 MHz)
• Built-in power up reset circuit
• 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
PIN ASSIGNMENT