ISO1432BDW - 12Mbps Isolated RS-485/RS-422 Transceiver | TI
料号： ISO1432BDW ✓ 量产中ISO1432BDW 概述
An isolated transceiver is a type of interface IC that combines a differential line driver and receiver with an internal isolation barrier. The isolation barrier separates the logic-side supply and signals from the bus-side interface, helping prevent ground loops and allowing communication between equipment located at different ground potentials. The ISO1432 belongs to the broader interface-IC and communication-transceiver hierarchy, with RS-485 and RS-422 differential signaling designed for noise-resistant data transfer over cables.
The ISO1432BDW is identified as a one-channel full-duplex transceiver with EMC protection. Full-duplex operation provides separate transmit and receive paths, allowing simultaneous bidirectional communication when the system requires it. The 12 Mbps maximum signaling rate supports high-speed industrial links, while the 5 kVrms isolation rating provides a substantial barrier between the two sides of the interface. The manufacturer product information identifies the family as an RS-485 and RS-422 transceiver and describes it as EMC protected.
The DW package designation identifies the 16-pin SOIC outline used by this orderable variant. The part is suitable for industrial equipment, factory automation, data acquisition, building controls, and other installations where the interface must withstand electrically noisy environments. The isolation barrier and EMC-focused design are particularly useful when long cables, switching converters, motors, relays, or grounded subsystems can introduce transients and potential differences into a communication link.
Designers should verify the complete pinout, isolation requirements, bus termination, common-mode range, supply sequencing, and maximum exposed-pad or package thermal constraints against the manufacturer datasheet before production release. The 16-pin SOIC footprint should be matched exactly to the DW package drawing, and the logic-side and bus-side isolation domains must be treated as separate electrical domains. Cable shielding, chassis grounding, surge protection, and appropriate common-mode protection should be evaluated for the intended installation.
This product data combines Texas Instruments family information, distributor availability references, package details, and verified comparison data for engineering selection. It is intended to help engineers identify whether the ISO1432BDW meets the required communication rate, isolation level, package, temperature range, and EMC-protection needs before comparing it with alternative isolated transceiver implementations.
直接替换替代料： ISO1432BDW ——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： ISO1432BDW （相同外形与封装尺寸）.
ISO1432DWR
✅ 直接替换联系询价
查看数据手册 →ISO1432DW
✅ 直接替换联系询价
查看数据手册 →ISO1432BDWR
✅ 直接替换📋 参考替代料（不在目录中）
ISO1430BDWR
✅ 直接替换📋 参考替代料（不在目录中）
ISO1410BDWR
✅ 直接替换📋 参考替代料（不在目录中）
ISO1432BDW 规格参数
| 暂无规格参数 |
ISO1432BDW standard 引脚配置指南
ISO1432BDW（standard 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： ISO1432BDW.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISO1432BDW 适用于 6 应用s: Industrial RS-485 Field Bus, Factory Automation Controller Interface, Data Acquisition and Test Equipment, Building and HVAC Controls, Medical and Diagnostic Equipment, Telecommunications and Network Equipment.
Industrial RS-485 Field Bus
The ISO1432BDW fits industrial RS-485 field-bus links that require up to 12 Mbps operation, full-duplex communication, and 5 kVrms galvanic isolation. Place the transceiver between the controller UART or industrial communication processor and the external bus, observing the separate logic-side and bus-side grounds. The 12 Mbps capability supports high-speed equipment links, while the isolation barrier reduces ground-potential and fault-current coupling between factory equipment. EMC protection is valuable around motors, relays, and switching power stages. The final bus network still requires verified termination, cable routing, common-mode margin, surge protection, and logic-side supply sequencing according to the manufacturer datasheet.
推荐
Factory Automation Controller Interface
The ISO1432BDW is appropriate for a factory automation controller that must communicate over an isolated RS-485 or RS-422 link close to motors, contactors, and switching equipment. Its 12 Mbps maximum rate permits high-speed service data, diagnostics, or configuration traffic, while full-duplex operation supports simultaneous command and response traffic. The 5 kVrms isolation rating separates the controller electronics from the field-side transceiver domain, improving robustness when equipment grounds are not equal. Layout should keep the isolation barrier and bus-side return path away from high-dv/dt switching nodes. Verify the exact supply requirements, bus fail-safe behavior, and pin functions from the manufacturer documentation before layout release.
推荐
Data Acquisition and Test Equipment
The ISO1432BDW can isolate a laboratory instrument or data-acquisition system from an external RS-485 or RS-422 control network. The 12 Mbps capability supports fast status polling and synchronized measurement traffic, while full-duplex operation allows command transmission and measurement feedback to occur concurrently. Isolation is useful when the instrument chassis and external equipment have different ground potentials, reducing the chance that a ground loop disturbs sensitive measurements or creates an unintended current path. Connect the instrument logic side to its local supply and the bus side to the intended cable interface, then confirm the complete datasheet pinout and isolation layout. Shielding and chassis grounding should be engineered separately from the digital signal ground.
推荐
Building and HVAC Controls
The ISO1432BDW supports isolated building-control networks using RS-485 or RS-422, particularly where controllers, sensors, and actuators may have different local ground references. Its 5 kVrms isolation helps protect low-energy control electronics from installation transients, while the 12 Mbps rate covers high-density control traffic. EMC protection is useful near relays, contactors, lighting electronics, and motor-control equipment. Designers should maintain the required differential topology, avoid excessive stub lengths, and apply termination where dictated by the system architecture. Verify common-mode range and fault behavior because the supplied verified data confirms the isolation and rate but does not provide those detailed electrical limits.
推荐
Medical and Diagnostic Equipment
The ISO1432BDW may be used in a medical or diagnostic instrument when an external RS-485 or RS-422 accessory interface requires electrical isolation. The 5 kVrms barrier can help keep external cable-borne transients away from sensitive logic, and the -40 °C to +125 °C rating supports a broad range of equipment environments. The 12 Mbps rate and full-duplex operation are more than adequate for many control and monitoring links. Medical use still requires a complete system risk assessment, appropriate isolation-network design, creepage and clearance review, and validation of the end product. The device itself is not represented as a finished medical standard or system certification.
推荐
Telecommunications and Network Equipment
The ISO1432BDW is suitable for isolated communications equipment where a high-speed RS-485 or RS-422 management link must cross a ground-potential boundary. Its 12 Mbps maximum signaling rate supports rapid control-plane traffic, and the EMC-protected full-duplex architecture is useful in racks containing switching regulators and other high-current circuitry. The 5 kVrms isolation can improve system resilience when connected modules use separate power and ground domains. In telecom and networking products, the designer must still coordinate the isolation barrier, surge-current path, chassis ground, protective earth, and cable shield termination. Confirm supply rails and timing from the datasheet because those values are not included in the supplied verified excerpts.
推荐
推荐产品汇总
工程参考数据： ISO1432BDW ——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 | ISO1432DWR | ISO1432DW | ISO1432BDWR | ISO1430BDWR | ISO1410BDWR |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (DW) | 16-SOIC (DW) | 16-SOIC (DW) | 16-SOIC (DW) | 16-SOIC (DW) | 16-SOIC (DW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
关键差异点
- High-speed isolated RS-485/RS-422 interface （对比 ISO1430BDWR)
- Full-duplex operation （对比 ISO1410BDWR)
- EMC-focused 5 kVrms isolated interface （对比 ISO1432DWR)
- Broad specified temperature range （对比 ISO1432DW)
设计说明
Use the manufacturer DW package drawing to place the 16-pin SOIC footprint, and keep the isolation barrier and bus-side return path physically separated from logic-side copper as shown in the datasheet layout guidance. Place any required bus termination and protection components close to the transceiver pins. Do not route high-current or high-dv/dt switching-node copper beneath the isolation barrier. Because the supplied evidence does not include the pin names or exact layout values, verify every connection against the official datasheet before fabrication.
The key selection risk is treating every ISO14xx suffix as electrically identical. ISO1432DWR, ISO1432DW, ISO1432BDWR, ISO1430BDWR, and ISO1410BDWR appear in the supplied comparison references, but the evidence does not quantify every speed, topology, isolation, temperature, or qualification difference. Confirm the exact orderable part status and compare pinout, supply voltage, common-mode range, bus topology, and propagation timing before approving a substitution.
For industrial cables, connect the cable shield according to the installation's EMC strategy rather than indiscriminately tying it to logic ground at both ends. Keep the shield termination away from sensitive analog or signal-reference paths, and evaluate chassis grounding to provide a low-impedance path for surge current. The ISO1432BDW's EMC protection helps the transceiver, but it does not replace correct cable routing, surge protection, or system-level bonding.
合规信息
The supplied verified excerpts identify EMC protection, 5 kVrms isolation, and the operating temperature range, but do not provide explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification statements. Those fields remain unknown.
