Overview
The MAX3490EESA+ is a 3.3V, low-power transceiver designed for RS-485 and RS-422 communications, manufactured by Analog Devices Inc./Maxim Integrated. This device is part of the MAX3483E to MAX3491E family and is known for its enhanced electrostatic discharge (ESD) protection and low-power operation. Each device contains one driver and one receiver, making it suitable for various communication applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage (VCC) | 3.0 to 3.6 | V |
| Operating Temperature | -40°C to +85°C | °C |
| Data Rate | Up to 12 | Mbps |
| Duplex Mode | Full-Duplex | |
| ESD Protection | ±15kV (Human Body Model), ±8kV (IEC 1000-4-2 Contact Discharge), ±15kV (IEC 1000-4-2 Air-Gap Discharge) | kV |
| Common-Mode Input Voltage Range | -7V to +12V | V |
| Package Type | 8-SOIC | |
| Pin Count | 8 | |
| Receiver Hysteresis | 50 mV | mV |
| Shutdown Current | 2 nA | nA |
Key Features
- Operate from a single +3.3V supply—no charge pump required.
- Interoperable with +5V logic.
- Enhanced ESD protection: ±15kV (Human Body Model), ±8kV (IEC 1000-4-2 Contact Discharge), ±15kV (IEC 1000-4-2 Air-Gap Discharge).
- Slew-rate limited drivers for errorless data transmission (specific models).
- Low-current shutdown mode: 2 nA.
- -7V to +12V common-mode input voltage range.
- Full-duplex and half-duplex versions available.
- Industry-standard 75176 pinout.
- Current-limiting and thermal shutdown for driver overload protection.
Applications
- Telecommunications.
- Industrial-Control Local Area Networks.
- Transceivers for EMI-Sensitive Applications.
- Integrated Services Digital Networks.
- Packet Switching.
Q & A
- Q: What is the MAX3490EESA+ used for?
The MAX3490EESA+ is used for RS-485 and RS-422 communications, providing a reliable and low-power solution for various industrial and telecommunications applications.
- Q: What is the operating voltage of the MAX3490EESA+?
The MAX3490EESA+ operates from a single +3.3V supply.
- Q: What is the maximum data rate of the MAX3490EESA+?
The MAX3490EESA+ can transmit data at up to 12 Mbps.
- Q: Does the MAX3490EESA+ support full-duplex communication?
- Q: What level of ESD protection does the MAX3490EESA+ offer?
The MAX3490EESA+ offers ±15kV ESD protection according to the Human Body Model, ±8kV according to IEC 1000-4-2 Contact Discharge, and ±15kV according to IEC 1000-4-2 Air-Gap Discharge.
- Q: What is the common-mode input voltage range of the MAX3490EESA+?
The common-mode input voltage range is -7V to +12V.
- Q: What is the package type of the MAX3490EESA+?
The MAX3490EESA+ comes in an 8-SOIC package.
- Q: Is the MAX3490EESA+ interoperable with +5V logic?
- Q: What is the shutdown current of the MAX3490EESA+?
The shutdown current is 2 nA.
- Q: Does the MAX3490EESA+ have current-limiting and thermal shutdown protection?
