SP485RCN-L

Product Overview

• Category: Integrated Circuit
• Use: Communication and Networking
• Characteristics: High-Speed, Low-Power, Half-Duplex RS-485 Transceiver
• Package: 8-Lead SOIC (Small Outline Integrated Circuit)
• Essence: Reliable and efficient communication in industrial environments
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 3.0V to 5.5V
• Data Rate: Up to 20 Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1 Driver, 1 Receiver
• Driver Output: ±60V
• Receiver Input: ±12V
• Driver Output Resistance: 13Ω
• Receiver Input Resistance: 12kΩ
• Shutdown Current: 1μA (max)

Detailed Pin Configuration

The SP485RCN-L has an 8-pin configuration as follows:

1. DE (Driver Enable)
2. RE (Receiver Enable)
3. A (Non-Inverting Data Line)
4. B (Inverting Data Line)
5. GND (Ground)
6. Y (Receiver Output)
7. Z (Driver Output)
8. VCC (Power Supply)

Functional Features

• Half-duplex communication using the RS-485 standard
• Enhanced ESD protection for reliable operation in harsh environments
• Low power consumption for energy-efficient applications
• Wide supply voltage range for compatibility with various systems
• High data rate enables fast and efficient data transmission
• Driver output short-circuit protection for enhanced safety

Advantages and Disadvantages

Advantages: - Robust design suitable for industrial applications - High-speed data transmission capability - Low power consumption - Enhanced ESD protection - Wide supply voltage range

Disadvantages: - Limited to half-duplex communication - Requires external components for complete functionality

Working Principles

The SP485RCN-L is a half-duplex RS-485 transceiver that enables bidirectional communication over a single twisted-pair cable. It uses differential signaling to provide noise immunity and long-distance communication capabilities. The driver section converts logic-level signals into balanced differential voltages, while the receiver section converts the received differential voltages back into logic-level signals. The DE and RE pins control the direction of communication by enabling or disabling the driver and receiver sections.

Detailed Application Field Plans

The SP485RCN-L is widely used in various industrial applications, including:

1. Factory Automation Systems
2. Building Automation Systems
3. Process Control Systems
4. HVAC (Heating, Ventilation, and Air Conditioning) Systems
5. Access Control Systems
6. Security Systems
7. Instrumentation Systems
8. Robotics

Detailed and Complete Alternative Models

1. MAX485 - Maxim Integrated
2. SN75176 - Texas Instruments
3. LTC1480 - Linear Technology
4. ADM485 - Analog Devices
5. ST485 - STMicroelectronics
6. ISL8485 - Renesas Electronics

These alternative models offer similar functionality and can be considered as substitutes for the SP485RCN-L.

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