Overview
The MAX3485EESA+ is a 3.3V, low-power transceiver designed for RS-485 and RS-422 communication, manufactured by Analog Devices Inc./Maxim Integrated. This device is part of the MAX3483E family and is known for its enhanced electrostatic discharge (ESD) protection and low-power operation. Each MAX3485EESA+ contains one driver and one receiver, making it suitable for a variety of communication applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Guaranteed Data Rate | Up to 12 | Mbps |
| Supply Voltage (VCC) | 3.0 to 3.6 | V |
| Duplex Mode | Half-Duplex | |
| Slew-Rate Limited Driver | No | |
| Driver/Receiver Enable | Yes | |
| Shutdown Current | 2 nA | |
| ESD Protection | ±15kV (Human Body Model), ±8kV (IEC 1000-4-2 Contact Discharge), ±15kV (IEC 1000-4-2 Air-Gap Discharge) | |
| Common-Mode Input Voltage Range | -7V to +12V | V |
| Pin Count | 8 | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- Operates from a single +3.3V supply without a charge pump.
- 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).
- Low-current shutdown mode: 2 nA.
- Fail-safe receiver input guarantees a logic-high output if both inputs are open circuit.
- Current-limiting and thermal shutdown for driver overload protection.
- Industry-standard 75176 pinout.
- Allows up to 32 transceivers on the bus.
Applications
- Telecommunications.
- Industrial-Control Local Area Networks.
- Transceivers for EMI-Sensitive Applications.
- Integrated Services Digital Networks.
- Packet Switching.
Q & A
- What is the guaranteed data rate of the MAX3485EESA+?
The MAX3485EESA+ guarantees a data rate of up to 12 Mbps.
- What is the supply voltage range for the MAX3485EESA+?
The supply voltage range is 3.0 to 3.6 V.
- Does the MAX3485EESA+ support full-duplex communication?
No, the MAX3485EESA+ is designed for half-duplex communication.
- What level of ESD protection does the MAX3485EESA+ offer?
The MAX3485EESA+ offers ±15kV ESD protection (Human Body Model), ±8kV (IEC 1000-4-2 Contact Discharge), and ±15kV (IEC 1000-4-2 Air-Gap Discharge).
- What is the common-mode input voltage range for the MAX3485EESA+?
The common-mode input voltage range is -7V to +12V.
- How many pins does the MAX3485EESA+ have?
The MAX3485EESA+ has 8 pins.
- What is the operating temperature range for the MAX3485EESA+?
The operating temperature range is -40°C to +85°C.
- Does the MAX3485EESA+ have a low-current shutdown mode?
Yes, the MAX3485EESA+ has a low-current shutdown mode of 2 nA.
- Is the MAX3485EESA+ interoperable with +5V logic?
Yes, the MAX3485EESA+ is interoperable with +5V logic.
- What kind of driver protection does the MAX3485EESA+ offer?
The MAX3485EESA+ offers current-limiting and thermal shutdown for driver overload protection.
