( DataSheet : com ) TECHNICAL DATA IN5851 PULSE DIALER WITH REDIAL The IN5851 is a monolithic CMOS integrated circuit which uses an inexpensive RC oscillator for its frequency reference and provides all the features required for implementing a pulse dialer with 32 digit redial.
• Wide operating voltage range (2.
0~6.
0V) • Low power dissipation • Use either a standard 2 of 7 matrix keyboard with negative true common or the inexpensive form A-type keyboard • Make/Break ratio can be selected • Redial with * or # • Continuous MUTE • Power up clear circuitry on chip • 10 pps/20 pps can be selected ORDERING INFORMATION IN5851N Plastic TA = -20° to 70° C LOGIC DIAGRAM PIN ASSIG...

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