MAX4901ETA+T

Product Overview

• Category: Integrated Circuits (ICs)
• Use: RS-485/RS-422 Transceiver
• Characteristics:
  • High-speed data transmission
  • Low power consumption
  • ESD protection
  • Wide supply voltage range
• Package: 8-pin TDFN (Thin Dual Flat No-Lead)
• Essence: MAX4901ETA+T is a high-performance RS-485/RS-422 transceiver designed for industrial communication applications.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 3V to 5.5V
• Data Rate: Up to 25Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1/1
• ESD Protection: ±15kV Human Body Model (HBM), ±15kV IEC 61000-4-2 Air-Gap Discharge, ±8kV IEC 61000-4-2 Contact Discharge

Pin Configuration

The MAX4901ETA+T has the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| RO DI |-- Pin 2: Receiver Output (RO) --| RE DE |-- Pin 3: Receiver Enable (RE) / Driver Enable (DE) --| DE RE |-- Pin 4: Driver Enable (DE) / Receiver Enable (RE) --| DI RO |-- Pin 5: Driver Input (DI) --| A B |-- Pin 6: Differential Bus Line A --| B A |-- Pin 7: Differential Bus Line B --| GND VCC |-- Pin 8: Supply Voltage (VCC) |___________| ```

Functional Features

• High-speed data transmission: The MAX4901ETA+T supports data rates up to 25Mbps, making it suitable for applications requiring fast communication.
• Low power consumption: This transceiver is designed to minimize power consumption, making it ideal for battery-powered devices or energy-efficient systems.
• ESD protection: With built-in ESD protection, the MAX4901ETA+T safeguards against electrostatic discharge, ensuring reliable operation in harsh environments.
• Wide supply voltage range: The transceiver operates within a wide supply voltage range of 3V to 5.5V, providing flexibility in various applications.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability - Low power consumption - ESD protection for enhanced reliability - Wide supply voltage range for versatility

Disadvantages: - Limited number of drivers/receivers (1/1)

Working Principles

The MAX4901ETA+T is based on the RS-485/RS-422 standard, which uses differential signaling for robust long-distance communication. It employs a driver to convert logic-level signals into balanced differential signals, while the receiver converts the received differential signals back into logic-level signals. The transceiver's enable pins allow control over the direction of data flow.

Detailed Application Field Plans

The MAX4901ETA+T is widely used in industrial automation, building automation, and other applications that require reliable long-distance communication. Some specific application areas include:

1. Factory Automation: The transceiver enables communication between PLCs (Programmable Logic Controllers), sensors, and actuators in industrial automation systems.
2. HVAC Control Systems: It facilitates communication between thermostats, temperature sensors, and HVAC equipment, enabling efficient climate control in buildings.
3. Access Control Systems: The transceiver is used in access control systems to transmit data between card readers, controllers, and electronic locks.
4. Security Systems: It enables communication between security sensors, alarm panels, and surveillance equipment, ensuring reliable operation of security systems.

Detailed and Complete Alternative Models

• MAX481: RS-485/RS-422 Transceiver with 1 driver and 1 receiver
• MAX1487: RS-485/RS-422 Transceiver with 2 drivers and 2 receivers
• SN65HVD485E: RS-485 Transceiver with 1 driver and 1 receiver
• LTC2850: Low Power RS-485 Transceiver with 1 driver and 1 receiver

These alternative models offer similar functionality to the MAX4901ETA+T and can be considered based on specific application requirements.

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