W91473B

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 mS, 305 mS, or 600 mS (selectable by keypad option) Minimum tone output duration: 93 mS Minimum intertone pause: 93 mS 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 series...