MAX1488EESD+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: RS-485/RS-422 Transceiver
• Characteristics: High-speed, low-power, half-duplex communication
• Package: 14-pin, small outline integrated circuit (SOIC)
• Essence: Provides a robust and reliable interface for long-distance serial communication
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: +4.5V to +5.5V
• Data Rate: Up to 2.5 Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1 driver, 1 receiver
• Receiver Input Sensitivity: ±200mV
• Driver Output Current: ±60mA
• ESD Protection: ±15kV (Human Body Model)

Pin Configuration

The MAX1488EESD+T has the following pin configuration:

Pin 1: DE (Driver Output Enable) Pin 2: /RE (Receiver Output Enable) Pin 3: A (Non-Inverting Driver Input) Pin 4: B (Inverting Driver Input) Pin 5: GND (Ground) Pin 6: B (Inverting Receiver Output) Pin 7: A (Non-Inverting Receiver Output) Pin 8: VCC (Supply Voltage) Pin 9: Y (Inverting Driver Output) Pin 10: Z (Non-Inverting Driver Output) Pin 11: /RE (Receiver Output Enable) Pin 12: DE (Driver Output Enable) Pin 13: /RE (Receiver Output Enable) Pin 14: GND (Ground)

Functional Features

• Half-duplex communication: Allows bidirectional data transmission on a single pair of wires
• High-speed data transfer: Supports data rates up to 2.5 Mbps
• Low-power consumption: Optimized for energy-efficient operation
• Robust ESD protection: Provides ±15kV protection against electrostatic discharge

Advantages and Disadvantages

Advantages: - High-speed communication enables quick data transfer - Low-power consumption prolongs battery life in portable devices - Robust ESD protection ensures reliability in harsh environments

Disadvantages: - Limited to half-duplex communication, not suitable for full-duplex applications - Requires external components for complete RS-485/RS-422 system implementation

Working Principles

The MAX1488EESD+T is designed to facilitate long-distance serial communication using the RS-485/RS-422 standard. It employs a differential signaling scheme, where data is transmitted as the voltage difference between two wires. The driver section converts logic-level signals into differential voltages, while the receiver section converts the received differential voltages back into logic-level signals.

The driver output enable (DE) and receiver output enable (/RE) pins control the direction of data flow. When DE is high and /RE is low, the driver is enabled and transmits data. Conversely, when DE is low and /RE is high, the receiver is enabled and receives data.

Detailed Application Field Plans

The MAX1488EESD+T is widely used in various industrial and commercial applications that require reliable long-distance communication. Some common application fields include:

1. Industrial Automation: Used in PLCs (Programmable Logic Controllers), SCADA (Supervisory Control and Data Acquisition) systems, and industrial networking equipment.
2. Building Automation: Enables communication between different building automation devices, such as HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and access control systems.
3. Instrumentation: Facilitates communication between measurement devices, such as sensors, transducers, and data loggers.
4. Automotive: Used in automotive systems for communication between different electronic control units (ECUs), such as engine management systems, body control modules, and infotainment systems.

Detailed and Complete Alternative Models

1. MAX485EESA+: Similar to MAX1488EESD+T but available in an 8-pin SOIC package.
2. SN75176BP: RS-485/RS-422 transceiver with similar specifications, available in a DIP package.
3. LTC2850IMS#PBF: Low-power RS-485 transceiver with integrated ESD protection, available in a 10-pin MSOP package.

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

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