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.
The W91473 series are Si-gate CMOS IC tone/pulse switchable dialers containing a 14-channel automatic dialing memory. These devices include a 16-digit x 3 emergency dialing memory, a 16-digit x 10 channel repertory memory providing 32-digit mercury memory, and support for flash, clear, hold, lock, and one-key redial functions.
| Memory Channels | 14-channel automatic dialing memory |
|---|---|
| Emergency Memory Capacity | 16-digit x 3 |
| Repertory Memory Capacity | 16-digit x 10 channel |
| Mercury Memory Capacity | 32-digit |
| Flash Time Options | 98 mS, 305 mS, or 600 mS |
| Minimum Tone Output Duration | 93 mS |
| Minimum Intertone Pause | 93 mS |
| Crystal Frequency | 3.579545 MHz |
The HKS pin is a hook switch input where HKS = 1 indicates an on-hook state (chip in sleep mode) and HKS = 0 indicates an off-hook state.
Pulling the MODE pin to Vss places the dialer in tone mode, while pulling it to VDD places the dialer in pulse mode.
The keytone signal generated by the KT output has a frequency of 600 Hz and a duration of 35 mS.