GENERAL DESCRIPTION

The W91350N series are tone/pluse switchable telephone dialers with thirteen memories, hold function, and a handfree dialing control circuit. Fabricated using CMOS technology, the W91350N series offer good performance in low-voltage and low-power applications.

FEATURES

· DTMF/pulse switchable dialer

· Two by 32-digit redial memory and save memory

· Three by 16-digit one-touch direct repertory memory

· Ten by 16-digit two-touch direct repertory memory

· Cascaded dialing allowed, with unlimited dialing length

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

· Uses 5 ′ 5 keyboard

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

· Pause, P?T (pulse-to-tone) can be stored as a digit in memory

· Dialing rate (10 ppS or 20 ppS) is selectable by bonding option

· On-hook debounce time: 150 msec.

· Minimum tone output duration: 93 msec. (W91354AN: 87 mS)

· Minimum intertone pause: 93 msec. (W91354AN: 87 mS)

· Flash break time (73, 100, 300, 600 msec) selectable by keypad; pause time is 1.0 sec.

· Make/break ratio (40:60 or 33.3:66.7) selectable by MODE pin

· On-chip power-on reset

· Uses 3.579545 MHz crystal or ceramic resonator

· Packaged in 18 or 20-pin plastic DIP