IL91210EN Datasheet | Unknown Manufacturer

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 ORDERING INFORMATION - DTMF Timing: IL91210EN Manual dialing: minimum duration for bursts and pauses TA = -20° to 70° C Redialing: calibrated timing - 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, TOP=+25° C) Symbol Parameter Test Conditions Guaranteed Limits Min VCC VMR VOC VOR IOL1 IOL2 IMR ICCP ICCT ISBP ISBT DC Supply Voltage Minimum Memory Retention Voltage 2.0 1.0 Column Row VOL = 0.4 V VOL = 0.4 V VCC = 1.0 V, HK = VCC All outputs unloaded Pulse mode Tone mode Pulse mode HK=VCC=1.5 V Tone mode HK=GND Max 5.5 V V 876 684 m A m A 0.6 1.0 2.0 0.05 µA m Vp-p Unit Tone Output Voltage Minimum Output Current, XMUTE, KT, MODEOUT Minimum Output Sink Current, DP Memory Retention Current VCC = 3.5 V RL = 5K Ω 584 456 0.5 0.6 Maximum Operation Current All outputs unloaded All...