ISO1410BDW - 500kbps Isolated RS-485/RS-422 | Texas Instruments
Артикул: ISO1410BDW ✓ АктивенISO1410BDW Обзор
An isolated RS-485/RS-422 transceiver combines differential bus signaling, galvanic isolation, and logic-side interfacing. RS-485 is commonly used for multipoint, half-duplex industrial buses, while RS-422 provides differential signaling for communication between two endpoints. In the power-management and interface hierarchy, this device is a digital isolator combined with a physical-layer line transceiver rather than a protocol converter or a general-purpose logic IC. Its capacitive-isolation architecture separates data across the isolation barrier while the transceiver drives or receives differential bus signals.
Key features include support for signaling rates up to 500 kbps, half-duplex operation, EMC-focused bus-pin protection, 5 kVrms isolation, and operation across the full -40°C to +125°C temperature range. The 16-pin DW package provides a wide-body surface-mount footprint with sufficient lead spacing for industrial assembly workflows. The availability of a half-duplex architecture allows a controller to share a communication channel for command and response traffic when the bus is idle.
The ISO1410 product family is positioned between lower-rate and very-high-speed isolated serial interfaces. The supplied TI family description identifies ISO141x devices as supporting up to 500 kbps, while ISO143x devices support up to 12 Mbps and ISO145x devices up to 50 Mbps. This distinction matters when selecting a replacement because signal rate, bus timing, and isolation implementation must match the original design intent. The ISO1410BDW is therefore most appropriate where 500 kbps operation and EMC resilience are sufficient but higher throughput is unnecessary.
Typical uses include industrial RS-485 buses, programmable logic controller communication, factory equipment interfaces, industrial sensor gateways, building-control networks, and isolated host connections. In these systems, the transceiver converts logic-level data into differential RS-485 or RS-422 signals, while its isolation barrier reduces the effect of unequal ground potentials between a controller and field equipment. A termination strategy, biasing network, protective earth connection, and correctly designed transceiver interface remain necessary for reliable operation.
A key design consideration is that isolation does not remove the need for careful bus implementation. The logic and bus-side supply domains should be decoupled appropriately, and the differential pair should be routed as a controlled-impedance network with minimized stub lengths. Designers should also verify the required data rate, cable length, termination values, grounding strategy, and transient requirements against the complete system rather than treating the IC as a complete surge-protection solution.
This product page combines verified manufacturer and distributor information, package and ordering data, comparison criteria, and application-oriented engineering guidance. It also distinguishes documented drop-in options from related family members and identifies where additional verification is required before replacing an installed ISO1410BDW.
Аналоги без доработки для ISO1410BDW — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ISO1410BDW (тот же форм-фактор и посадочное место) — отличается по Package, Operating Temperature Range, EMC Protection, Maximum Data Rate, Isolation Voltage.
ISO1410BDWR
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ISO1410DWR
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Открыть даташит →ISO1410BDW Характеристики
| Product Type | Galvanically isolated RS-485/RS-422 transceiver |
| Maximum Data Rate | 500 kbps |
| Duplex Mode | Half-duplex |
| Isolation Rating | 5 kVrms |
| Number of Transceivers | 1 |
| Logic and Bus Side | Isolated RS-485 and RS-422 |
| Диапазон рабочих температур | -40°C to +125°C |
| Корпус | 16-pin wide-body SOIC (DW) |
| Package Pin Count | 16 pins |
| Тип монтажа | Surface mount |
| EMC Protection | EMC-protected bus pins |
| Isolation Technology | Silicon-dioxide-based capacitive isolation |
| Digital Isolation Channels | 3 channels |
| Supported Standards | TIA/EIA RS-485 and TIA/EIA RS-422 |
Руководство по цоколевке ISO1410BDW в корпусе 16 pins
Цоколевка для ISO1410BDW (корпус 16 pins). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для ISO1410BDW.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
ISO1410BDW подходит для 6 применениеs: Factory Automation RS-485 Bus, PLC and Industrial Controller Interface, Building Automation Network, Industrial Sensor Gateway, Isolated RS-422 Point-to-Point Link, Heavy Equipment Control Module.
Factory Automation RS-485 Bus
The ISO1410BDW fits a factory automation bus that requires reliable differential signaling through electrically noisy equipment areas. Its 500 kbps maximum rate is appropriate for supervisory communication between a controller and remote sensors, actuators, or drives, while the 5 kVrms isolation barrier helps keep bus-side disturbances away from the controller. The half-duplex arrangement allows one pair of conductors to carry commands and responses when the bus is idle. Designers should use the 16-pin DW footprint, provide the required bus-side and logic-side supplies, and apply termination and fail-safe biasing appropriate to the cable topology.
Рекомендуется
PLC and Industrial Controller Interface
The ISO1410BDW is useful when a programmable controller must connect to field equipment over RS-485 or RS-422 with galvanic isolation. The supported rate of up to 500 kbps provides ample bandwidth for command polling, status updates, configuration data, and diagnostic traffic in typical industrial systems. Its -40°C to +125°C operating range supports equipment intended for severe thermal environments. The isolation barrier reduces the impact of ground offsets between cabinets, while the transceiver handles differential line signaling. Firmware timing, turnaround time, termination, and common-mode requirements must still be validated for the complete bus.
Рекомендуется
Building Automation Network
The ISO1410BDW can connect building-control equipment to a half-duplex RS-485 network where long cable runs and different building ground references increase noise or fault-current risk. Its EMC-protected bus interface and 500 kbps capability are well matched to supervisory HVAC, lighting, access, and environmental-control communications. Isolation helps a controller remain operational if a remote unit develops a ground fault. The implementation should include correctly selected line termination, common-mode protection where required, a controlled differential pair, and a documented grounding strategy that does not defeat the intended isolation barrier.
Рекомендуется
Industrial Sensor Gateway
The ISO1410BDW is appropriate for an industrial gateway that aggregates data from remote RS-485 sensors while protecting the host logic through galvanic isolation. The 500 kbps limit supports networks carrying periodic process measurements, status flags, and configuration commands without requiring the 12 Mbps or 50 Mbps performance of faster ISO14xx branches. A field-side transceiver can operate behind the isolation barrier while the logic side remains connected to a microprocessor or system controller. Designers should account for bus direction control, startup glitch behavior, cable length, termination, and the number of connected nodes when establishing reliable communication.
Рекомендуется
Isolated RS-422 Point-to-Point Link
Although ISO1410BDW is identified primarily as a half-duplex isolated RS-485/RS-422 transceiver, it can support RS-422 point-to-point applications that fit its signaling and timing capabilities. The 500 kbps rate is suitable for supervisory data exchange between equipment located in separate cabinets, and the 5 kVrms isolation rating helps manage potential differences between those systems. Designers should use differential routing, appropriate termination at the receiver, and compliant logic-side implementation. Any use that requires full-duplex operation or a rate above 500 kbps should be directed to a more appropriate transceiver.
Рекомендуется
Heavy Equipment Control Module
The ISO1410BDW is suitable for control modules in industrial machinery where an embedded controller communicates with remote drives, instrumentation, or service equipment. The -40°C to +125°C range supports harsh operating conditions, and the isolated interface reduces the chance that bus transients or ground-potential differences will damage the controller. Its 500 kbps limit is appropriate for command, diagnostic, and configuration traffic rather than high-bandwidth sensor streaming. The PCB should provide clean supply decoupling on both isolation sides, a controlled bus pair, and the protection network required by the installation’s surge and ESD environment.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ISO1410BDW — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ISO1410BDWR | ISO1410DWR |
|---|---|---|---|
| Package | 16-SOIC (DW) | 16-SOIC (DW) | 16-SOIC (DW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Maximum Data Rate | 0.5 Mbps | 0.5 Mbps | 0.5 Mbps |
| Duplex Mode | Half-duplex | Half-duplex | Half-duplex |
| Integrated Isolated Power | No | No | No |
| Transceiver Configuration | 1/1 isolated transceiver | 1/1 isolated transceiver | 1/1 isolated transceiver |
| Interface | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 |
Ключевые отличия
- Matches the verified 500 kbps industrial communication class (против ISO1410DWR)
- Uses the same 16-SOIC DW package family (против ISO1410BDWR)
- Provides the same half-duplex RS-485/RS-422 architecture (против ISO1410DWR)
- Supports severe industrial temperature environments (против ISO1410BDWR)
Заметки по проектированию
Keep the RS-485 and RS-422 differential pair routed as a tightly coupled trace pair over a continuous reference plane, minimize vias and stubs, and keep the route away from switching nodes and high-current paths. Place the transceiver close to the connector so surge currents enter the protection network before reaching the device. Maintain the wide-body 16-pin DW land pattern exactly; do not substitute an 8-pin narrow SOIC footprint.
Provide the supply voltages required on both the logic side and bus side, and decouple each domain according to the manufacturer’s recommended schematic and layout guidance. Do not assume that a single shared ground can be used to bypass the isolation barrier. Verify supply sequencing, quiescent current, startup behavior, and the voltage tolerance of every connected controller because the isolation barrier does not regulate either supply rail.
Do not automatically substitute ISO1410BDWR, ISO1410DWR, or ISO1432BDW without checking the official ordering table, isolation suffix, numbered pinout, and bus timing. ISO1410BDWR appears to be a handling or packaging suffix of the target, while ISO1410DWR and ISO1432BDW require additional isolation and speed review. Also remember that a transceiver is not a complete surge-protection network; external protection, termination, and grounding may still be necessary.
Use resistor or RC termination at the receiving endpoint, fail-safe biasing where required, and a common-mode strategy compatible with the isolated bus. Route protective devices to chassis or earth according to the installation’s surge requirements, and keep high-current protective loops away from the sensitive logic-side area. Validate emissions and immunity at the system level because cable shielding, connector construction, and chassis grounding materially affect EMC performance.
Информация о соответствии
The supplied manufacturer and distributor snippets do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. The component is an industrial interface IC, but no automotive qualification is claimed.
