SN65HVD11 - 3.3V RS-485 Transceiver | Texas Instruments
料号： SN65HVD11 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.5273 | $1.53 |
| 10 | $1.103 | $11.03 |
| 100 | $0.9758 | $97.58 |
| 500 | $0.9333 | $466.65 |
| 1,000 | $0.8909 | $890.90 |
SN65HVD11 概述
RS-485 is a standard for serial communication systems that use differential signaling to transmit data over long distances and in noisy environments. The SN65HVD11 belongs to the family of RS-485 transceivers, which are essential components in industrial control networks, building automation, and other multi-point data acquisition systems. These transceivers convert logic-level signals to differential voltages that can be transmitted over twisted-pair cables, providing immunity to common-mode noise and enabling communication over distances up to 1200 meters.
Key features of the SN65HVD11 include a 1/8 unit-load option that allows up to 256 transceivers on a single bus, a wide common-mode input range of -7 V to +12 V, and a low quiescent current of 1.1 mA typical. The device also features thermal shutdown protection and a 3-state output for bus sharing. The 8-pin SOIC package (D) is industry-standard, ensuring compatibility with existing PCB layouts.
The SN65HVD11 uses a Power BiCMOS process, which combines low power consumption with high-speed operation. The differential driver outputs a minimum of 1.5 V across a 54-ohm load, while the receiver has a sensitivity of ±200 mV. The device is specified for operation over the industrial temperature range of -40°C to +85°C, making it suitable for harsh environments.
Typical applications include industrial automation, building automation, HVAC systems, and point-of-sale terminals. The SN65HVD11 is also used in motor control and power inverter systems where reliable communication over long distances is required. Its high ESD protection and wide common-mode range make it ideal for factory floor networks.
When designing with the SN65HVD11, ensure proper termination (120-ohm) at both ends of the bus and use a bias network to maintain a defined idle state. The driver enable (DE) and receiver enable (RE) pins allow for half-duplex operation, and the device can be placed in a low-power shutdown mode by driving both pins high.
直接替换替代料： SN65HVD11 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
SN65HVD12D
📋 参考替代料（不在目录中）
SN75HVD11D
📋 参考替代料（不在目录中）
SN65HVD11QD
📋 参考替代料（不在目录中）
ISO1042D
📋 参考替代料（不在目录中）
MAX3485ESA
📋 参考替代料（不在目录中）
ADM3485EARZ
📋 参考替代料（不在目录中）
SN65HVD11 规格参数
| 电源电压 | 3.3 V (3.0 V to 3.6 V) |
| 数据速率 | 10 Mbps |
| Number of Drivers | 1 |
| Number of Receivers | 1 |
| Duplex | Half |
| Bus-Pin ESD Protection | 16 kV HBM |
| Unit Load | 1/8 (up to 256 nodes) |
| Common-Mode Input Range | -7 V to +12 V |
| Receiver Sensitivity | ±200 mV |
| Driver Output Voltage | 1.5 V min (54-ohm load) |
| 静态电流 | 1.1 mA typical |
| 工作温度 | -40°C to +85°C |
| 封装 | 8-SOIC (D) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Standards | TIA/EIA-485-A, ISO 8482:1993 |
SN65HVD11 引脚配置
| 引脚 1 | RO — Receiver output |
| 引脚 2 | RE — Receiver enable (active low) |
| 引脚 3 | DE — Driver enable (active high) |
| 引脚 4 | D — Driver input |
| 引脚 5 | GND — Ground |
| 引脚 6 | A — Non-inverting bus line |
| 引脚 7 | B — Inverting bus line |
| 引脚 8 | VCC — Power supply (3.3V) |
典型应用
SN65HVD11 适用于 6 应用s: Industrial Automation, Building Automation, Motor Control, Point-of-Sale Terminals, Data Acquisition Systems, Telecommunication Infrastructure.
Industrial Automation
The SN65HVD11 is ideal for industrial automation networks where reliable communication over long distances is critical. Its 10 Mbps data rate and 1/8 unit-load support up to 256 nodes, enabling large-scale factory floor monitoring and control. The wide common-mode range of -7V to +12V ensures robust operation in noisy environments with ground potential differences. The device's 16 kV HBM ESD protection safeguards against electrostatic discharge during installation and maintenance, reducing downtime and improving system reliability.
推荐
Building Automation
In building automation systems, the SN65HVD11 provides a cost-effective solution for HVAC control, lighting, and access control networks. Its 3.3-V operation reduces power consumption, while the 1/8 unit-load allows up to 256 devices on a single bus, simplifying wiring and reducing installation costs. The device's high ESD protection and wide common-mode range ensure reliable operation in commercial buildings where electrical noise from HVAC equipment and lighting is prevalent. The 8-SOIC package is compact and suitable for space-constrained controllers.
推荐
Motor Control
The SN65HVD11 is used in motor control systems to communicate between the central controller and remote drives. Its high data rate of 10 Mbps supports real-time control commands, while the robust differential signaling ensures immunity to electromagnetic interference from motor currents. The device's thermal shutdown protection prevents damage during fault conditions, and the wide common-mode range accommodates ground shifts in industrial environments. The 3.3-V supply is compatible with modern MCUs and DSPs used in motor control.
推荐
Point-of-Sale Terminals
The SN65HVD11 is suitable for point-of-sale (POS) terminals that require reliable communication with peripheral devices such as barcode scanners and receipt printers. Its 3.3-V operation aligns with low-power POS system designs, and the 10 Mbps data rate supports fast transaction processing. The device's small 8-SOIC package saves board space, and its high ESD protection ensures durability in high-traffic retail environments. The half-duplex operation is sufficient for most POS communication protocols.
推荐
Data Acquisition Systems
In data acquisition systems, the SN65HVD11 enables communication between remote sensors and a central data logger. Its 1/8 unit-load allows many sensors to share a single bus, reducing wiring complexity. The device's wide common-mode range and high ESD protection ensure reliable data transmission in harsh industrial environments. The 10 Mbps data rate is sufficient for high-speed sampling, and the 3.3-V supply is compatible with battery-powered data loggers. The half-duplex operation is adequate for most sensor polling protocols.
推荐
Telecommunication Infrastructure
The SN65HVD11 is used in telecommunication infrastructure for communication between base station components and network management systems. Its high data rate and robust differential signaling ensure reliable data transfer over long cable runs. The device's 3.3-V operation is compatible with modern telecom power supplies, and its wide common-mode range handles ground potential differences between equipment. The 16 kV ESD protection is critical for outdoor installations where lightning-induced surges are a concern.
推荐
推荐产品汇总
工程参考数据： SN65HVD11 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | SN65HVD12D | SN75HVD11D | ISO1042D | MAX3485ESA |
|---|---|---|---|---|---|
| Package | 8-SOIC (D) | 8-SOIC (D) | 8-SOIC (D) | 8-SOIC (D) | 8-SOIC (D) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Data Rate | 10 Mbps | 20 Mbps | 10 Mbps | 1 Mbps | 10 Mbps |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| ESD Protection | 16 kV HBM | 16 kV HBM | 16 kV HBM | 16 kV HBM | 15 kV HBM |
| Unit Load | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 |
| Common-Mode Range | -7V to +12V | -7V to +12V | -7V to +12V | -12V to +12V | -7V to +12V |
| Isolation | No | No | No | Yes (5 kVrms) | No |
关键差异点
- Higher data rate than ISO1042 （对比 ISO1042D)
- Lower cost than isolated alternatives （对比 ISO1042D)
- Pin-compatible with MAX3485 （对比 MAX3485ESA)
设计说明
Place the SN65HVD11 close to the bus connector to minimize stub length. Use 120-ohm termination resistors at both ends of the bus to prevent signal reflections. Keep the differential traces (A and B) close together and at equal length to maintain signal integrity. A ground plane under the device is recommended to reduce noise.
Decouple the VCC pin with a 0.1 uF ceramic capacitor placed as close as possible to the pin. For noisy industrial environments, add a 10 uF electrolytic capacitor in parallel. The SN65HVD11 operates from 3.3V, and the supply should be stable within 3.0V to 3.6V to ensure proper operation.
Ensure the DE and RE pins are not left floating. Tie RE low and DE high for always-enabled operation, or use a control signal to switch between transmit and receive. Do not exceed the absolute maximum ratings of -0.5V to +4.6V on logic pins. For long cable runs, use proper termination and biasing to maintain a defined idle state.
合规信息
RoHS compliant per TI product page. AEC-Q100 qualified variant available as SN65HVD11QD.
