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Description
The NT91235A is a single-chip, silicon gate, CMOS integrated circuit designed by Novatek. It features an on-chip oscillator for a 3.58MHz crystal or ceramic resonator, providing a dialing pulse (DP) or dual tone multi-frequency (DTMF) dialing. With a wide operating voltage range of 2V to 5.5V, this electronic component offers various features such as one-touch redial operation, tone/pulse switchability, and a 32-digit capacity for redialing. It also supports automatic mixed redialing, hands-free control function, and key-in beep tone output. The NT91235A is compatible with both 4 x 4 and 2 x 8 matrix keyboards and has a low standby current.
Specifications and features
- Single-chip, silicon gate, CMOS integrated circuit
- On-chip oscillator for a 3.58MHz crystal or ceramic resonator
- Dialing pulse (DP) or dual tone multi-frequency (DTMF) dialing
- One-touch redial operation
- Tone/Pulse switchable
- 32-digit capacity for redialing
- Automatic mixed redialing (last number redial) of pulse to DTMF with multiple automatic access pauses
- PABX auto-pause is 2.2 seconds
- DTMF Timing: Manual dialing and redialing
- Hands-Free control function
- Wide operating voltage range: 2V to 5.5V
- Key-in beep tone output
- Digits dialed manually after redialing are cascadable and stored as additional digits for the next redialing
- Uses inexpensive ceramic resonator (3.58 MHz)
- Two versions for different telephone systems
- Built-in power-up reset circuit
- Four extra function keys: flash, pause, redial, and DP or DTMF mixed dialing
- Compatible with 4 x 4 (or 2 x 8) keyboards
- Low standby current
Application Scenarios
The NT91235A is commonly used in electronic devices and systems that require dialing functionality. It can be utilized in telecommunication systems, telephone handsets, and other applications where dialing capabilities are needed.
Comparison
Advantages- Single-chip design for easy integration
- Supports both DP and DTMF dialing
- Wide operating voltage range
- Compact size
Disadvantages- Limited compatibility with specific telephone systems
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Datasheet
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Popular parts of the same kind
- Datasheet: Download NT91235A
- Chipdatas Part: CD89-NT91235A
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/09/20 08:47 +0800
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