IL5851 - Pulse Dialer with Redial
NAME VCC PIN 1 Positive supply pin.
The voltage on this pin is measured relative to Pin 6 and is supplied from a 150µA current source.
This voltage should be regulated to less than 6.0 volts using on external form or regulation.
VREF 2 The VREF output provides reference voltage that tracks internal
IL5851 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
