SN65HVD251PE4

Product Overview

• Category: Integrated Circuit
• Use: Transceiver
• Characteristics: High-speed, low-power, half-duplex communication
• Package: 8-pin PDIP (Plastic Dual In-Line Package)
• Essence: Provides a reliable and efficient solution for industrial communication networks
• Packaging/Quantity: Available in tubes of 50 units

Specifications

• Supply Voltage Range: 3 V to 5.5 V
• Data Rate: Up to 1 Mbps
• Operating Temperature Range: -40°C to +85°C
• ESD Protection: ±16 kV HBM (Human Body Model)
• Current Consumption: 2.7 mA (typical)

Pin Configuration

The SN65HVD251PE4 has the following pin configuration:

```

---

| | --| VCC GND|-- Pin 1: Ground --| A B |-- Pin 2: Bus Line A --| Y Z |-- Pin 3: Bus Line B --| RE DE |-- Pin 4: Receiver Enable --| RO DI |-- Pin 5: Receiver Output --| DI RO |-- Pin 6: Driver Input --| DE RE |-- Pin 7: Driver Enable --| GND VCC |-- Pin 8: Power Supply |___________| ```

Functional Features

• Half-duplex communication transceiver
• Supports RS-485 and RS-422 standards
• Low power consumption
• Wide supply voltage range
• Built-in ESD protection
• Receiver and driver enable control
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - High-speed data transmission - Reliable communication over long distances - Suitable for industrial environments - Low power consumption

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

Working Principles

The SN65HVD251PE4 is a half-duplex transceiver that enables bidirectional communication between two bus lines, A and B. It supports RS-485 and RS-422 standards, providing reliable data transmission over long distances in industrial environments. The transceiver operates by enabling the receiver or driver based on the control signals received from the connected microcontroller or system.

Detailed Application Field Plans

The SN65HVD251PE4 is widely used in various applications, including:

1. Industrial Automation: Enables communication between PLCs (Programmable Logic Controllers), sensors, and actuators in factory automation systems.
2. Building Automation: Facilitates data exchange between HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and security systems.
3. Energy Management: Allows communication between smart meters, energy monitoring devices, and control systems for efficient energy management.
4. Transportation Systems: Supports communication in automotive networks, railway systems, and traffic control systems.
5. Communication Infrastructure: Used in network equipment, such as routers, switches, and gateways, for reliable data transmission.

Detailed and Complete Alternative Models

1. MAX485: Similar half-duplex transceiver with RS-485 compatibility.
2. LTC485: Low-power RS-485 transceiver with integrated ESD protection.
3. ADM2483: Isolated RS-485 transceiver with integrated DC/DC converter.
4. SN75176: Half-duplex RS-485 transceiver with wide supply voltage range.

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