MAX485 - RS485/RS422 Transceivers [Maxim - Original]

MAX485 RS-485/RS-422 Half-Duplex Transceiver IC - Maxim

The MAX485 is a low-power transceiver designed for RS-485 and RS-422 communication. It facilitates data transmission over extended distances in industrial environments. This integrated circuit operates in half-duplex mode, suitable for applications with unidirectional data flow. Quiescent current consumption is 300µA, supporting power-sensitive designs. The device supports up to 32 transceivers on a single bus for multi-point communication networks. Manufactured by Maxim, this component provides dependable performance. Integrated thermal shutdown protection enhances operational reliability. It is utilized in embedded and industrial control systems requiring serial data exchange.

Specifications:

• Transceiver Type: RS-485/RS-422
• Operating Mode: Half-Duplex
• Quiescent Supply Current: 300µA
• Max Nodes on Bus: 32
• Supply Voltage: 5V
• Max Data Rate: 2.5 Mbps
• Operating Temperature Range: -40°C to +85°C
• Protection Features: Thermal Shutdown
• Manufacturer: Maxim

Key features and benefits:

• Low-power RS-485/RS-422 half-duplex transceiver
• Quiescent current consumption: 300µA
• Supports up to 32 transceivers on a single bus
• Integrated thermal shutdown protection
• Slew-rate limited driver for reduced electromagnetic interference (EMI)
• Operates from a single 5V supply
• Receiver input impedance: 12kΩ

Applications:

• Industrial control systems
• Building automation networks
• Security and access control systems
• Point-of-sale (POS) equipment
• Embedded data acquisition systems

Frequently Asked Questions:

Q: What is the primary function of the MAX485 transceiver?
A: The MAX485 is designed to facilitate reliable RS-485 and RS-422 serial communication, enabling data transmission over long distances in industrial and embedded systems.

Q: How many devices can the MAX485 support on a single bus?
A: The MAX485 supports up to 32 transceivers on a single bus, allowing for the creation of multi-point communication networks.

Q: What does "half-duplex" operation mean for the MAX485?
A: Half-duplex operation signifies that the MAX485 can transmit or receive data, but not simultaneously. Data flows in one direction at a time over the communication bus.

Package Includes:

*Image shown is a representation only.

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