23-MEMORY TONE/PULSE DIALER WITH AUTOREDIAL REC AND LCD DISPLAY FUNCTIONS

GENERAL DESCRIPTION The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing. They feature 23 number memories and a 16-digit LCD driver for displaying telephone numbers and calling time. A real time clock is included to display the time of day.

SM91574AL BMS Transformer

Features n Pin auto-termination n Working voltage: 1000 VDC n Hi-Pot: 3000 VAC, 1 mA, 60 sec. n Single channel with integrated choke n Developed for use with Analog Device’s LTC6804-1/681X, NXP’s MC33771/ 33772 and TI’s BQ79616 n Functional insulation n AEC-Q200 compliant n RoHS complian

SM91574AL BMS Transformer

Features n Pin auto-termination n Working voltage: 1000 VDC n Hi-Pot: 3000 VAC, 1 mA, 60 sec. n Single channel with integrated choke n Developed for use with Analog Device’s LTC6804-1/681X, NXP’s MC33771/ 33772 and TI’s BQ79616 n Functional insulation n AEC-Q200 compliant n RoHS complian