GENERAL DESCRIPTION

The W91430N series are Si-gate CMOS ICs that provide the necessary signals for either tone or pulse dialing. The W91430N series features save memory and a 13 by 16 digit automatic dialing memory.

FEATURES

· DTMF/pulse switchable dialer

· Two by 32 digit redial and save memory

· Three by 16 digit one-touch direct memory

· Ten by 16 digit two-touch direct memory

· Redial memory cascadable with normal dialing; dialing length is unlimited, but if length oversteps 32-digit the redial function is inhibited

· Pulse-to-tone (*/T) keypad for long distance call operation

· Uses 5 ′ 5 keyboard

· Easy operation with redial, flash, pause and */T keypads

· Flash, pause, P?T (Pulse-to-tone) can be stored as a digit in memory

· Dialing rate (10, 20 ppS ) selected by bonding option

· On hook debounce time: 150 msec.

· Minimum tone output duration: 93 msec.

· Minimum intertone pause: 93 msec.

· Flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1 sec.

· On-chip power-on reset

· Uses 3.579545 MHz crystal or ceramic resonator

· Packaged in 18-pin plastic DIP