W91412A Datasheet

W91412A TONE/PULSE DIALER

The W91410 series are monolithic ICs that provide the necessary signals for either pulse or tone dialing. The W91410 series feature a redial and save memory. FEATURES • DTMF/Pulse switchable dialer • Two by 32 digits for redial and save memory • Pulse-to-tone (P→T) keypad for long distance call op.

Features

• DTMF/Pulse switchable dialer
• Two by 32 digits for redial and save memory
• Pulse-to-tone (P→T) keypad for long distance call operation
• Break/Make ratio is selectable by pin option
• Uses 4 × 4 keyboard
• Easy operation with redial, flash, pause, and P→T keypads
• Flash, pause, P→T (Pulse-to-tone) can be stored as a digit in memory
• Minimum tone output duration: 100 mS
• Minimum intertone pause: 100 mS
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 18-pin plastic DIP
• The different dialers in the W91410 series are shown in the following table: .