The EDE1144 is a 4x4 matrix keypad encoder IC which has auto key repeat, contact debouncing, keybeep feedback, electrically quiet (reduced EMI) keypad scanning, serial/parallel output, data valid output signal for interrupt activation, 2400/9600 serial baud rates, 18 pin DIP or SOIC package, interfaces to any microcontroller or microprocessor, cost effective for OEM applications.