W91570DN Overview
The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing.
W91570DN Key Features
- Three by 32 digits for redial, save and mercury memory
- Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory
- Uses 6 × 10 keyboard
- Pause, Pulse-to-tone (-/T) and flash can be stored as a digit in memory
- Minimum tone output duration: 87 mS
- Minimum intertone pause: 87 mS
- Tone/Pulse mode pin selectable
- Make/Break ratio pin selectable
- Dialing rate (10 or 20 ppS) pin selectable
- Pause time (2.0 or 3.6 Sec) select
W91570DN Applications
- Three by 32 digits for redial, save and mercury memory
- Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory