ISO1412DWR - 500kbps Full-Duplex 5kVrms Isolated RS-485/RS-422 | Texas Instruments
料号： ISO1412DWR ✓ 量产中ISO1412DWR 概述
直接替换替代料： ISO1412DWR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ISO1412DWR （相同外形与封装尺寸） ——差异在于 Duplex Mode, Operating Temperature Range, Package, Supported Standards.
ISO1410DWR
✅ 直接替换联系询价
查看数据手册 →ISO1410BDWR
✅ 直接替换📋 参考替代料（不在目录中）
ISO1411DWR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ISO1412DWR
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →ISO1412DW
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ISO1412DWR 规格参数
| Product Type | Isolated differential bus transceiver |
| Supported Standards | TIA/EIA RS-485 and TIA/EIA RS-422 |
| 数据速率 | 500 kbps |
| Duplex Mode | Full duplex |
| Transmitter Count | 1 |
| Receiver Count | 1 |
| Isolation Voltage | 5 kVrms |
| Supply Voltage Range | 1.71 V to 5.5 V |
| 工作温度范围 | -40 °C to 125 °C |
| 封装 | 16-pin SOIC, DW package |
| 安装类型 | Surface mount |
| EMC Protection | EMC protected |
| ESD/EFT Protection | High-level bus-pin transient tolerance |
| Galvanic Isolation | Yes |
| Differential Signaling | RS-485 and RS-422 |
ISO1412DWR 16-pin soic, dw package 引脚配置指南
ISO1412DWR（16-pin soic, dw package 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： ISO1412DWR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISO1412DWR 适用于 6 应用s: Factory Automation and PLC Fieldbus Links, Motor Drives and Industrial Controls, Photovoltaic Inverter Monitoring, Building Automation and HVAC Equipment, Grid Infrastructure Communication, Fieldbus Gateways and Serial-to-Ethernet Bridges.
Factory Automation and PLC Fieldbus Links
The ISO1412DWR fits isolated factory-automation links that require reliable RS-485 or RS-422 communication at up to 500 kbps. Its 5-kVrms isolation separates the controller interface from the fieldbus, helping reduce ground-loop and high-potential hazards. The full-duplex 1/1 transceiver architecture supports simultaneous transmit and receive paths, while the EMC-focused design is appropriate for industrial cables near motors and switching equipment. Designers should verify the ISO1412 family pinout, termination strategy, and logic-side supply requirements against the manufacturer datasheet before releasing a PLC or remote-I/O board.
推荐
Motor Drives and Industrial Controls
The ISO1412DWR is suitable for command and diagnostic links in motor-drive and industrial-control systems where the communications transceiver must withstand electrically noisy environments. Its 500-kbps data rate is suitable for many high-speed serial-control networks, while 5-kVrms isolation provides a substantial barrier between the host controller and bus circuitry. The 16-pin SOIC DW package supports compact, surface-mounted implementation. Engineers should still validate common-mode range, cable length, termination, fail-safe biasing, and transient withstand conditions for the exact industrial network.
推荐
Photovoltaic Inverter Monitoring
The ISO1412DWR can connect photovoltaic inverter monitoring electronics to an isolated RS-485 or RS-422 supervisory network. Its 5-kVrms isolation is useful when inverter power stages and external communications equipment may be at different ground potentials, while the EMC protection focus supports operation around high-energy switching converters. The 500-kbps full-duplex capability is adequate for supervisory commands, status reporting, and diagnostic data. Board designers should follow the manufacturer’s isolation and bus-layout guidance, including placement of isolation boundaries, return paths, and protection components.
推荐
Building Automation and HVAC Equipment
The ISO1412DWR is appropriate for building-automation controllers and HVAC equipment that exchange RS-485 data with remote sensors, actuators, or supervisory panels. The transceiver combines a 500-kbps data rate, full-duplex operation, and 5-kVrms isolation in a 16-pin SOIC package. Isolation helps maintain communication integrity across systems with long cable runs or different ground references. For dependable deployment, verify the ISO1412 datasheet for logic thresholds, bus termination, receiver fail-safe behavior, and recommended surge-protection arrangements.
推荐
Grid Infrastructure Communication
ISO1412DWR devices can provide isolated serial communication between grid-monitoring electronics and field equipment operating across substantial ground-potential differences. Its 500-kbps full-duplex interface is suitable for supervisory telemetry, protection information, and configuration traffic, while the 5-kVrms isolation barrier improves system separation. The EMC-protected construction is relevant in substations and outdoor installations where ESD and electrical-fast-transient disturbances are common. Field engineers must confirm isolation lifetime, working voltage, surge coordination, and cable-routing requirements in addition to the basic bus specification.
推荐
Fieldbus Gateways and Serial-to-Ethernet Bridges
The ISO1412DWR fits fieldbus gateways and serial-to-Ethernet bridges that need an isolated industrial-side RS-485 or RS-422 port. At 500 kbps, it accommodates high-speed legacy fieldbus traffic while the full-duplex configuration can support simultaneous control and monitoring. Its 5-kVrms isolation helps keep the gateway’s Ethernet and processing domains separated from the field wiring. For gateway designs, verify bus direction-control logic, termination under the selected network topology, isolation capacitance, and grounding strategy against the manufacturer datasheet.
推荐
推荐产品汇总
工程参考数据： ISO1412DWR ——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 | ISO1410DWR | ISO1410BDWR | ISO1411DWR | ISO1412DW |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOIC-16 (DW) | SOIC-16 (DW) | SOIC-16 (DW) | SOIC-16 (DW) | SOIC-16 (DW) |
关键差异点
- Verified full-duplex operation （对比 ISO1410DWR)
- Explicit 5-kVrms isolation rating （对比 ISO1410BDWR)
- Broad specified temperature range （对比 ISO1410DWR)
- Verified EMC-focused product positioning （对比 ISO1412DW)
设计说明
Maintain a clear isolation boundary between the logic-side and bus-side networks. Keep the bus traces away from sensitive input, clock, and reference traces, and do not route ground or plane copper across the isolation barrier unless the manufacturer application guidance explicitly permits it. Confirm the exact DW-package pin assignments from the ISO1412 datasheet before fixing the PCB footprint and isolation-clearance requirements.
Do not treat the SOIC-16 package name alone as proof of drop-in compatibility. Before replacing the ISO1412DWR with ISO1410DWR, ISO1410BDWR, or another ISO14xx member, compare every pin, supply rail, logic threshold, isolation rating, driver level, receiver threshold, timing specification, and bus protection parameter. The supplied search excerpts do not provide enough data to guarantee production interchangeability.
Use the manufacturer-recommended bus protection and termination arrangement for the selected RS-485 or RS-422 topology. Place transient-protection components close to the connector and bus pins, keep their return paths short, and avoid long unprotected stubs. The ISO1412 family is described as EMC protected, but integrated protection does not remove the need for correct cable entry, surge coordination, grounding, and isolation-layout practices.
Provide local decoupling at the device supply pins using the capacitance and placement specified by the Texas Instruments ISO1412 datasheet. Check the logic-side voltage against the 1.71 V to 5.5 V supply range, and verify whether the bus-side interface requires an external reference or bias arrangement. Do not infer capacitor values from generic RS-485 guidance because the verified excerpts do not specify the recommended network.
合规信息
The verified excerpts do not provide explicit compliance statements for the exact ISO1412DWR orderable part. A comparison-page snippet mentions RoHS and REACH for ISO1410DWR versus ISO1412DWR, but no exact values were supplied, so no compliance conclusion has been inferred.
