W91473C Datasheet | Winbond

W91473 SERIES 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTIONS GENERAL DESCRIPTION The W91473 series are Si-gate CMOS IC tone/pulse switchable dialers containing a 14-channel automatic dialing memory, including a 16-digit × 3 emergency dialing memory and a 16-digit × 10 channel repertory memory that provides a 32-digit mercury memory. These dialers also provide flash, clear, hold, lock, and one-key redial functions. Features - DTMF/Pulse switchable dialer - 32-digit LNB (last number buffer) memory - 32-digit mercury memory - 16-digit × 3 one-touch direct repertory memory - 16-digit × 10 direct repertory memory - Uses 7 × 5 keyboard - Flash time: 98 m S, 305 m S, or 600 m S (selectable by keypad option) - Minimum tone output duration: 93 m S - Minimum intertone pause: 93 m S - On-chip power-on reset - Uses 3.579545 MHz crystal or ceramic resonator - Packaged in 22, 24, or 28-pin plastic DIP - The different dialers in the W91473...