MV4325 Overview
MV4325 MV4325 PROGRAMMABLE KEYPAD PULSE DIALLER The MV4325 Keypad Pulse Diallercontains all the logic necessary to interface a 2 of 7 keypad and convert this key information to control and mute pulses simulating a tele· phone rotary dial. The MV4325 has programmable access pause capability to provide automatic interruption of diall· ing needed when accessing the toll network, WATS line or public network. The device...
MV4325 Key Features
- Last Number Redial
- Multiple Access Pause Programming
- Any Valid Keypad Input or HOLD IN Causes Exit
- Oscillator Start Up Controlled from Keypad Input
- Oscillator Power Down whilst not Dialling
- 300 Hz Key Tone indicates Valid Key
- 2.0V to 7.0V Supply Voltage Operating Range
- Stores up to 20 Digits and Access Pauses
- Digit Memory Retained down to 1.0V at 1JAA
- Selectable Mark/Space Ratio 66t : 33t or 60 : 40
MV4325 Applications
- Pushbutton Telephones with Last Number Redial