Overview
The MAX3490ESA+T from Analog Devices Inc./Maxim Integrated is a high-performance, 3.3V-powered RS-485/RS-422 transceiver. This full-duplex transceiver is designed to operate in noisy environments and is optimized for extended cable runs. It features a single 3.3V supply, eliminating the need for a charge pump, and is interoperable with +5V logic. The device is part of the MAX3483AE family, known for its robustness and reliability in various industrial and telecommunications applications.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Part Number | MAX3490ESA+T |
| Protocol | RS-485, RS-422 |
| Package | SOIC-8 |
| Operating Temperature | -40°C to +125°C |
| Supply Voltage | 3V to 3.6V |
| Data Rate | Up to 10Mbps |
| Duplex Mode | Full-Duplex |
| ESD Protection | ±20kV HBM, ±15kV Air-Gap, ±8kV Contact |
| Receiver Hysteresis | 50 mV |
| Common-Mode Input Voltage Range | -7V to +12V |
Key Features
- Operates from a single 3.3V supply without a charge pump.
- Interoperable with +5V logic.
- High-speed data rates up to 10Mbps.
- Slew-rate limited for errorless data transmission.
- Enhanced electrostatic discharge (ESD) protection: ±20kV HBM, ±15kV Air-Gap, ±8kV Contact.
- Fail-safe receiver ensures a logic-high output if inputs are shorted, open, or connected to a three-state bus.
- Hot-swap capability eliminates false transitions during power-up or hot insertion.
- Short-circuit protected outputs and thermal shutdown for driver overload protection.
- Low-current shutdown mode (2nA).
- Allows up to 128 transceivers on the bus.
Applications
- Industrial-control local area networks.
- Telecommunications.
- Transceivers for EMI-sensitive applications.
- Extended cable runs in noisy environments.
Q & A
- What is the operating voltage of the MAX3490ESA+T?
The MAX3490ESA+T operates from a single 3.3V supply, with a voltage range of 3V to 3.6V.
- What is the maximum data rate supported by the MAX3490ESA+T?
The MAX3490ESA+T supports data rates up to 10Mbps.
- What type of duplex mode does the MAX3490ESA+T support?
The MAX3490ESA+T supports full-duplex communication.
- What level of ESD protection does the MAX3490ESA+T offer?
The MAX3490ESA+T offers ±20kV HBM, ±15kV Air-Gap, and ±8kV Contact ESD protection.
- What is the operating temperature range of the MAX3490ESA+T?
The operating temperature range is -40°C to +125°C.
- How many transceivers can be connected on the bus using the MAX3490ESA+T?
Up to 128 transceivers can be connected on the bus.
- Does the MAX3490ESA+T have a fail-safe receiver feature?
Yes, the MAX3490ESA+T has a fail-safe receiver feature that ensures a logic-high output if inputs are shorted, open, or connected to a three-state bus.
- What is the common-mode input voltage range of the MAX3490ESA+T?
The common-mode input voltage range is -7V to +12V.
- Is the MAX3490ESA+T compatible with +5V logic?
Yes, the MAX3490ESA+T is interoperable with +5V logic.
- Does the MAX3490ESA+T have thermal shutdown protection for driver overload?
Yes, the MAX3490ESA+T has thermal shutdown protection for driver overload.
