SP490ECN-L

Product Overview

• Category: Integrated Circuit (IC)
• Use: Communication and data transmission
• Characteristics: High-speed, low-power consumption, noise immunity
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Serial Transceiver IC
• Packaging/Quantity: Tape and Reel / 2500 units per reel

Specifications

• Supply Voltage: 3.0V to 5.5V
• Data Rate: Up to 250 kbps
• Operating Temperature Range: -40°C to +85°C
• Interface: RS-485
• Number of Channels: 1
• Receiver Hysteresis: 50 mV
• Driver Output Impedance: 13 Ω

Detailed Pin Configuration

The SP490ECN-L has the following pin configuration:

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

Functional Features

• Full-duplex communication
• Half-duplex communication with automatic switching
• Enhanced ESD protection
• Low power shutdown mode
• Thermal shutdown protection
• Short-circuit protection

Advantages and Disadvantages

Advantages

• High-speed data transmission
• Low power consumption
• Excellent noise immunity
• Wide operating voltage range
• Robust ESD protection

Disadvantages

• Limited number of channels (only 1)
• Requires external components for complete functionality

Working Principles

The SP490ECN-L is designed to facilitate reliable communication and data transmission over long distances. It utilizes the RS-485 interface standard, which allows for multi-point communication using differential signaling. The IC incorporates driver and receiver circuits to enable bidirectional data transfer.

When transmitting data, the driver circuit amplifies the digital signals from the A and B inputs and sends them differentially through a twisted pair cable. On the receiving end, the receiver circuit converts the differential signals back into digital data, which can be accessed through the Y and Z outputs.

The DE and RE pins control the direction of data flow. By enabling or disabling these pins, the SP490ECN-L can operate in full-duplex or half-duplex mode, respectively.

Detailed Application Field Plans

The SP490ECN-L is widely used in various applications that require reliable and noise-immune communication. Some of the common application fields include:

1. Industrial Automation: Used for communication between PLCs (Programmable Logic Controllers), sensors, and actuators in industrial control systems.
2. Building Automation: Enables communication between different building automation devices such as HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and security systems.
3. Automotive Electronics: Facilitates communication between different automotive modules, such as engine control units, body control modules, and infotainment systems.
4. Renewable Energy Systems: Allows for communication between various components in solar power systems, wind turbines, and energy storage systems.
5. Access Control Systems: Used for secure communication between access control panels, card readers, and door locks in security systems.

Detailed and Complete Alternative Models

1. MAX485 - Similar functionality and pin configuration, available in DIP and SOIC packages.
2. SN75176 - Compatible with RS-485 standard, offers higher data rates, available in various package options.
3. LTC2850 - Low-power RS-485 transceiver with integrated ESD protection, operates at higher temperatures.

These alternative models provide similar functionality to the SP490ECN-L and can be considered as alternatives based on specific requirements and preferences.

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