SN65HVD21ADR

Product Overview

• Category: Integrated Circuit
• Use: Transceiver
• Characteristics: High-speed, low-power, half-duplex communication
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transmits and receives data over a single twisted-pair bus
• Packaging/Quantity: Tape and Reel, 2500 units per reel

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)
• Receiver Input Threshold: ±200 mV
• Driver Output Impedance: 60 Ω

Pin Configuration

The SN65HVD21ADR has the following pin configuration:

1. GND (Ground)
2. VCC (Supply Voltage)
3. RxD (Receiver Data Input)
4. TxD (Transmitter Data Output)
5. DE (Driver Enable)
6. RE (Receiver Enable)
7. RS (Receiver Output)
8. DI (Driver Input)

Functional Features

• Half-duplex communication
• Low power consumption
• Wide supply voltage range
• Built-in ESD protection
• Receiver input threshold hysteresis
• Driver output short-circuit protection

Advantages and Disadvantages

Advantages: - High-speed data transmission - Low power consumption - Wide operating temperature range - Robust ESD protection

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

Working Principles

The SN65HVD21ADR is a transceiver IC designed for half-duplex communication over a single twisted-pair bus. It operates by converting digital signals into differential voltages suitable for transmission over the bus. The receiver section converts the differential voltages back into digital signals. The driver and receiver sections are controlled by the DE (Driver Enable) and RE (Receiver Enable) pins, respectively.

Detailed Application Field Plans

The SN65HVD21ADR is commonly used in various applications, including:

1. Industrial Automation: Used for communication between PLCs (Programmable Logic Controllers), sensors, and actuators in industrial control systems.
2. Automotive Electronics: Enables communication between different electronic modules in vehicles, such as ECUs (Electronic Control Units), sensors, and displays.
3. Building Automation: Facilitates communication between different devices in smart buildings, including HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and security systems.

Detailed and Complete Alternative Models

• MAX485
• LTC485
• ADM2483
• ISO1050

These alternative models offer similar functionality to the SN65HVD21ADR and can be used as replacements depending on specific requirements.

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