MAX208CDBRG4

Product Overview

• Category: Integrated Circuit
• Use: Communication and Networking
• Characteristics: Low-power, RS-485/RS-422 Transceiver
• Package: 24-pin SSOP (Shrink Small Outline Package)
• Essence: MAXIM Integrated's MAX208CDBRG4 is a low-power transceiver designed for RS-485 and RS-422 communication protocols.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage Range: +4.5V to +5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Rate: Up to 2.5Mbps
• Number of Drivers/Receivers: 1 Driver, 1 Receiver
• ESD Protection: ±15kV Human Body Model
• Current Consumption: 300µA (Typical)

Pin Configuration

The MAX208CDBRG4 has a total of 24 pins. The pin configuration is as follows:

1. DE (Driver Output Enable)
2. RE (Receiver Output Enable)
3. DI (Driver Input)
4. RO (Receiver Output)
5. A (Non-Inverting Driver Output / Non-Inverting Receiver Input)
6. B (Inverting Driver Output / Inverting Receiver Input)
7. GND (Ground)
8. VCC (Supply Voltage)
9. Y (Inverting Receiver Output)
10. Z (Non-Inverting Receiver Output)
11. B (Inverting Driver Output / Inverting Receiver Input)
12. A (Non-Inverting Driver Output / Non-Inverting Receiver Input)
13. RO (Receiver Output)
14. DI (Driver Input)
15. RE (Receiver Output Enable)
16. DE (Driver Output Enable)
17. GND (Ground)
18. VCC (Supply Voltage)
19. Y (Inverting Receiver Output)
20. Z (Non-Inverting Receiver Output)
21. B (Inverting Driver Output / Inverting Receiver Input)
22. A (Non-Inverting Driver Output / Non-Inverting Receiver Input)
23. RO (Receiver Output)
24. DI (Driver Input)

Functional Features

• Low-power transceiver for RS-485 and RS-422 communication protocols.
• Supports data rates up to 2.5Mbps.
• Integrated fail-safe receiver ensures a logic-high output when inputs are open or shorted.
• ±15kV ESD protection on driver outputs and receiver inputs.
• Wide supply voltage range allows operation in various systems.

Advantages and Disadvantages

Advantages: - Low power consumption. - High data rate capability. - Integrated ESD protection. - Fail-safe receiver for improved reliability.

Disadvantages: - Limited number of drivers/receivers (1 each). - Restricted operating temperature range (-40°C to +85°C).

Working Principles

The MAX208CDBRG4 is designed to facilitate reliable communication using the RS-485 and RS-422 protocols. It incorporates a driver and a receiver, allowing bidirectional data transmission. The driver converts logic-level signals into differential voltages suitable for long-distance transmission, while the receiver performs the reverse operation.

The integrated fail-safe receiver ensures that the output remains at a logic-high level when the inputs are open or shorted, enhancing system reliability. The device also provides ESD protection on both driver outputs and receiver inputs, safeguarding against electrostatic discharge events.

Detailed Application Field Plans

The MAX208CDBRG4 is widely used in various applications, including:

1. Industrial Automation: Enables robust communication between PLCs (Programmable Logic Controllers), sensors, and actuators in industrial control systems.
2. Building Automation: Facilitates reliable data transmission in HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting control, and security systems.
3. Telecommunications: Supports communication between network equipment, such as routers, switches, and modems.
4. Automotive: Used in automotive electronics for communication between different vehicle subsystems.

Detailed and Complete Alternative Models

1. SN65HVD485E: Low-power RS-485 Transceiver with integrated ESD protection.
2. LTC2850: Low-power RS-485/RS-422 Transceiver with enhanced ESD protection and wide operating temperature range.
3. ADM2485: Isolated RS-485 Transceiver with integrated transformer driver.

These alternative models offer similar functionality to the MAX208CDBRG4 and can be considered based on specific application requirements.

In conclusion, the MAX208CDBRG4 is a low-power transceiver designed for RS-485 and RS-422 communication protocols. It offers high data rate capability, integrated ESD protection, and a fail-safe receiver. With its wide range of applications and availability of alternative models, it provides a reliable solution for