Спецификации
| Атрибут | Ценность |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Half |
| ReceiverHysteresis | 50 mV |
| DataRate | 1Mbps |
| Voltage-Supply | 3.15V ~ 5.5V |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Обзор
Description
The SN65HVD1781DR is a robust, 3.3 V RS-485 transceiver manufactured by Texas Instruments. It is designed for industrial applications that require reliable communication over long distances and in electrically noisy environments. This device supports data rates up to 200 kbps and is optimized for low power consumption, making it suitable for battery-powered applications.
Key features of the SN65HVD1781DR include:
1. 3.3 V Operation: Compatible with low-voltage systems while still maintaining RS-485 standard compliance.
2. Extended Protection: Offers enhanced electrostatic discharge (ESD) protection and over-voltage protection to withstand harsh environments.
3. Bus-Pin Protection: Withstands up to ±70 V without damage, providing robustness against voltage fluctuations.
4. Failsafe: Implements a failsafe receiver for bus open, short, and idle conditions, ensuring reliable data transmission.
5. Wide Temperature Range: Operates from -40°C to 125°C, suitable for various industrial settings.
Overall, the SN65HVD1781DR is ideal for harsh environment applications where reliable and efficient data transmission is essential.
Key features of the SN65HVD1781DR include:
1. 3.3 V Operation: Compatible with low-voltage systems while still maintaining RS-485 standard compliance.
2. Extended Protection: Offers enhanced electrostatic discharge (ESD) protection and over-voltage protection to withstand harsh environments.
3. Bus-Pin Protection: Withstands up to ±70 V without damage, providing robustness against voltage fluctuations.
4. Failsafe: Implements a failsafe receiver for bus open, short, and idle conditions, ensuring reliable data transmission.
5. Wide Temperature Range: Operates from -40°C to 125°C, suitable for various industrial settings.
Overall, the SN65HVD1781DR is ideal for harsh environment applications where reliable and efficient data transmission is essential.
Equivalent
The SN65HVD1781DR is a RS-485 transceiver. Equivalent products can include:
1. MAX485ESA+ from Maxim Integrated.
2. ADM485ARZ from Analog Devices.
3. AM26C31CDR from Texas Instruments (for general RS-485 applications).
4. LTC1481CN8 from Analog Devices.
These alternatives may have varying specifications, so it's crucial to review datasheets to ensure compatibility with your specific requirements.
1. MAX485ESA+ from Maxim Integrated.
2. ADM485ARZ from Analog Devices.
3. AM26C31CDR from Texas Instruments (for general RS-485 applications).
4. LTC1481CN8 from Analog Devices.
These alternatives may have varying specifications, so it's crucial to review datasheets to ensure compatibility with your specific requirements.
Features
The SN65HVD1781DR is a robust RS-485 transceiver designed for high-speed communication in industrial environments. Key features include:
1. Wide Supply Voltage Range: Operates from 3.0V to 5.5V, providing flexibility for different systems.
2. High Data Rate: Supports data rates up to 200 kbps, making it suitable for fast communications.
3. Enhanced ESD Protection: Offers ±15 kV Human-Body Model (HBM) ESD protection on the bus pins, ensuring reliability in harsh environments.
4. Integrated Protection Features: Includes thermal shutdown, open-circuit, and short-circuit protection, enhancing durability.
5. Low Power Consumption: Features low standby current mode to save power when not actively transmitting or receiving.
6. Fail-safe Receiver: Ensures a known output state when the bus is idle, open, or shorted.
7. Extended Operating Temperature Range: Operates from -40°C to 125°C, suitable for extreme industrial conditions.
These features make the SN65HVD1781DR ideal for robust and reliable communication in industrial and commercial applications.
1. Wide Supply Voltage Range: Operates from 3.0V to 5.5V, providing flexibility for different systems.
2. High Data Rate: Supports data rates up to 200 kbps, making it suitable for fast communications.
3. Enhanced ESD Protection: Offers ±15 kV Human-Body Model (HBM) ESD protection on the bus pins, ensuring reliability in harsh environments.
4. Integrated Protection Features: Includes thermal shutdown, open-circuit, and short-circuit protection, enhancing durability.
5. Low Power Consumption: Features low standby current mode to save power when not actively transmitting or receiving.
6. Fail-safe Receiver: Ensures a known output state when the bus is idle, open, or shorted.
7. Extended Operating Temperature Range: Operates from -40°C to 125°C, suitable for extreme industrial conditions.
These features make the SN65HVD1781DR ideal for robust and reliable communication in industrial and commercial applications.
Pinout
The SN65HVD1781DR is a robust RS-485 transceiver designed for industrial applications. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a brief overview of the pin functions:
1. Pin 1 (R): Receiver output.
2. Pin 2 (RE): Receiver enable. Active low.
3. Pin 3 (DE): Driver enable. Active high.
4. Pin 4 (D): Driver input.
5. Pin 5 (GND): Ground connection.
6. Pin 6 (A): Non-inverting driver output / receiver input.
7. Pin 7 (B): Inverting driver output / receiver input.
8. Pin 8 (VCC): Supply voltage input.
This transceiver is designed for reliable data transmission over long distances in noisy environments, commonly found in industrial communication systems. It supports half-duplex communication with high immunity to electromagnetic interference, and it is suitable for applications that require high-speed data transfer with robust electrical performance.
1. Pin 1 (R): Receiver output.
2. Pin 2 (RE): Receiver enable. Active low.
3. Pin 3 (DE): Driver enable. Active high.
4. Pin 4 (D): Driver input.
5. Pin 5 (GND): Ground connection.
6. Pin 6 (A): Non-inverting driver output / receiver input.
7. Pin 7 (B): Inverting driver output / receiver input.
8. Pin 8 (VCC): Supply voltage input.
This transceiver is designed for reliable data transmission over long distances in noisy environments, commonly found in industrial communication systems. It supports half-duplex communication with high immunity to electromagnetic interference, and it is suitable for applications that require high-speed data transfer with robust electrical performance.
Manufacturer
The SN65HVD1781DR is manufactured by Texas Instruments Incorporated. Texas Instruments, often abbreviated as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. The company is a major producer of chips for calculators, digital signal processors, microcontrollers, and various other electronic devices. TI operates globally and serves a wide range of industries, including automotive, industrial, consumer electronics, and communications. It is known for its innovation in the semiconductor industry and has a strong reputation for producing high-quality electronic components.
Application
The SN65HVD1781DR is a robust RS-485 transceiver commonly used in industrial applications. Its typical application areas include:
1. Industrial Automation: Facilitates reliable communication in PLCs, motor controls, and robotics.
2. Building Automation: Used in HVAC systems, lighting controls, and security systems.
3. Smart Grid: Enhances data transmission in smart meters and energy management systems.
4. Transportation: Supports communications in railways and traffic control systems.
5. Remote Monitoring: Enables data exchange in remote sensors and data acquisition systems.
Its features like high ESD protection, wide operating temperature range, and fault protection make it suitable for harsh environments.
1. Industrial Automation: Facilitates reliable communication in PLCs, motor controls, and robotics.
2. Building Automation: Used in HVAC systems, lighting controls, and security systems.
3. Smart Grid: Enhances data transmission in smart meters and energy management systems.
4. Transportation: Supports communications in railways and traffic control systems.
5. Remote Monitoring: Enables data exchange in remote sensors and data acquisition systems.
Its features like high ESD protection, wide operating temperature range, and fault protection make it suitable for harsh environments.
Package
The SN65HVD1781DR is a transceiver from Texas Instruments, supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package is compact and suitable for surface-mount technology, making it ideal for use in various electronic applications where PCB space is limited.