ISO1452DWR - 50Mbps 5kVrms Isolated RS-485/RS-422 Transceiver
N.º da peça: ISO1452DWR ✓ AtivoISO1452DWR Visão geral
An isolated differential transceiver is an interface IC that transfers data across a galvanic-isolation barrier while rejecting common-mode noise on the cable. RS-422 supports point-to-point, full-duplex differential signaling, while RS-485 permits multipoint bus communication. The ISO1452 combines these standards with integrated isolation and EMC protection, placing it within the hierarchy of interface ICs, communication transceivers, and industrial interface semiconductors.
The principal features are a 50-Mbps maximum data rate, 5-kVrms isolation rating, full-duplex operation, and robust EMC protection. The bus pins are designed to withstand high levels of IEC electrostatic-discharge and electrical-fast-transient events, reducing the need for additional external protection in harsh industrial environments. Galvanic isolation also prevents ground-potential differences and common-mode currents on the bus from reaching the host electronics.
The ISO1452 architecture is suited to high-speed, noise-sensitive industrial links where the controller and field equipment may be separated by substantial ground offsets. Its full-duplex arrangement uses separate differential driver and receiver paths, avoiding the shared-bus turn-around behavior of half-duplex designs. This can simplify protocol timing, but it requires separate transmit and receive wiring and careful termination at the appropriate ends of each differential pair.
Typical uses include factory automation, motor drives, grid infrastructure, photovoltaic inverters, HVAC equipment, building automation, fieldbus gateways, and industrial test equipment. These applications benefit from the combination of 50-Mbps throughput, 5-kVrms isolation, and EMC protection. The isolation barrier is particularly useful where high-voltage equipment, long cables, or separate power domains create dangerous ground-potential differences.
Designers must observe the RS-422 and RS-485 termination, biasing, common-mode, and layout requirements of the selected bus topology. The wide-body SOIC package should be placed with its isolation barrier and primary-side versus secondary-side circuits clearly separated, while high-current surge paths should be kept away from sensitive logic traces. The exact pin assignments and bypass recommendations should be taken from the manufacturer datasheet rather than inferred from the ordering code.
This page combines verified manufacturer and distributor information with practical selection criteria, application context, and cross-reference guidance. It is intended to help engineers identify whether the ISO1452DWR matches a required data rate, isolation level, bus standard, package, and industrial EMC environment before committing the part to a PCB design.
Alternativas drop-in para ISO1452DWR — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ISO1452DWR (mesmo formato e footprint) — diferindo em EMC Protection, Package, Product Type, Transceiver Configuration.
ISO1410BDWR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ISO1452BDWR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ISO1452DW
✅ Drop-InConsulte o preço
Ver ficha técnica →ISO1452DWR Especificações
| Product Type | Isolated RS-485 and RS-422 transceiver |
| Transceiver Configuration | 1/1 full-duplex transceiver |
| Maximum Data Rate | 50 Mbps |
| Isolation Voltage | 5 kVrms |
| Supported Standards | TIA/EIA RS-485 and RS-422 |
| Isolation Type | Galvanic isolation |
| EMC Protection | Enhanced EMC protection |
| Bus Protection | IEC ESD and IEC EFT bus-pin protection |
| Encapsulamento | 16-pin wide-body SOIC |
| Package Width | 7.50 mm |
| Tipo de montagem | Surface mount |
| Orderable Suffix | DWR |
| Shipping Format | Tape and reel |
| Standard Reel Quantity | 2000 units |
| Status do ciclo de vida | Active |
Guia de Configuração de Pinos do ISO1452DWR 7.50 mm
Configuração de pinos para ISO1452DWR (pacote 7.50 mm). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para ISO1452DWR.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ISO1452DWR é adequado para 6 aplicaçãos: Factory Automation Fieldbus Gateways, Motor Drive Status Communications, Photovoltaic Inverter Monitoring, Grid Infrastructure Telemetry, HVAC and Building Automation, Industrial Test and Measurement.
Factory Automation Fieldbus Gateways
The ISO1452DWR fits isolated factory-fieldbus gateways that must move control data reliably between a controller and remote modules. Its 50-Mbps line rate supports high-speed differential communication, while the 5-kVrms isolation barrier separates the gateway electronics from field wiring that may be exposed to substantial ground offsets. Texas Instruments identifies the ISO1452 family for harsh industrial environments and high IEC ESD and EFT stress on bus pins. The transceiver should be used with a termination and biasing strategy appropriate to the selected RS-485 or RS-422 topology.
Recomendado
Motor Drive Status Communications
The ISO1452DWR is suitable for the control interface between an industrial motor drive and a supervisory controller. Its full-duplex architecture permits simultaneous command and response traffic, and the 50-Mbps capability is well above the bandwidth normally needed for drive telemetry while leaving margin for communication-system timing. The 5-kVrms isolation reduces coupling between drive-side power circuitry and low-level controller hardware. Designers should still verify common-mode limits, cable length, ground-reference behavior, and termination against their specific motor-drive architecture.
Recomendado
Photovoltaic Inverter Monitoring
The ISO1452DWR can connect photovoltaic inverter monitoring electronics to an isolated supervisory bus. Its 50-Mbps differential interface rate supports efficient status and diagnostic transfers, while 5-kVrms isolation helps separate inverter-domain circuitry from external monitoring equipment. The enhanced EMC protection is valuable where cables run near switching power stages and where bus pins may encounter electrostatic-discharge or electrical-fast-transient events. The exact operating voltage, common-mode range, and isolation working-voltage limits must be confirmed from the official datasheet for the deployment environment.
Recomendado
Grid Infrastructure Telemetry
The ISO1452DWR is applicable to telemetry links in grid infrastructure where communications equipment is connected across long, noisy cable runs. The 50-Mbps data rate supports high-throughput differential signaling, and the 5-kVrms isolated barrier helps prevent ground-potential differences and common-mode bus energy from reaching sensitive control electronics. Texas Instruments describes the ISO1452 as EMC protected for harsh industrial environments. System integrators should validate the isolation working voltage, surge strategy, cable protection, and regulatory requirements for the deployed grid equipment.
Recomendado
HVAC and Building Automation
The ISO1452DWR supports isolated communication between HVAC controllers, sensors, actuators, and building-automation equipment. Full-duplex operation can simplify command and status traffic, while the 5-kVrms isolation improves robustness when controllers and field equipment use different power domains. The 50-Mbps line rate provides ample margin for supervisory control and diagnostics. Because building systems often use long cables and shared RS-485 segments, designers must carefully implement termination, fail-safe biasing, isolation-zone spacing, and protective grounding.
Recomendado
Industrial Test and Measurement
The ISO1452DWR is well matched to isolated test equipment that communicates with remote fixtures or instrumentation over differential cabling. Its 50-Mbps capability permits high-speed command traffic, and its 5-kVrms isolation reduces noise and ground-offset interference in measurement systems. EMC-protected bus inputs are useful where test systems are repeatedly connected and disconnected from external cables. Engineers should use short, controlled ground paths around the isolation barrier and confirm that test-system common-mode and leakage requirements remain within the manufacturer-specified limits.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ISO1452DWR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ISO1410BDWR | ISO1452BDWR | ISO1452DW |
|---|---|---|---|---|
| Package | SOIC-16 wide-body, 7.50 mm | SOIC-16 | SOIC-16 | SOIC-16 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Transceiver Configuration | 1/1 full-duplex | 1/1 full-duplex | 1/1 full-duplex | 1/1 full-duplex |
| Galvanic Isolation | Yes | Yes | Yes | Yes |
Principais diferenciais
- Documented 50-Mbps full-duplex operation (vs ISO1452DW)
- Enhanced EMC protection for industrial bus pins (vs ISO1410BDWR)
- 5-kVrms galvanic isolation (vs SN75174DWR)
Notas de projeto
Maintain the manufacturer's recommended copper keepout and creepage around the isolation barrier. Route primary-side and secondary-side ground planes so they remain separated except at the device's specified isolation references. Place protection, termination, and bus components on the field side, and keep high-current surge-return paths away from logic traces. The supplied excerpts do not provide exact dimensions, so spacing must be calculated from the complete datasheet and the system's applicable insulation requirements.
Do not treat a shared SOIC-16 pin count as proof of drop-in compatibility. Before substituting ISO1410BDWR, ISO1452BDWR, or ISO1452DW, compare the complete pinout, supply pins, driver enable and receiver enable functions, isolation ratings, timing, common-mode limits, and fail-safe behavior. Also verify the physical body width and lead geometry of each ordering code; a nominal SOIC-16 designation can conceal narrow-body and wide-body differences.
Use the termination and fail-safe-biasing arrangement required by the actual RS-422 or RS-485 topology rather than placing termination indiscriminately at every node. For point-to-point RS-422, matched termination is generally appropriate at the receiving end; RS-485 buses commonly use termination at the two physical ends. The ISO1452DWR's 50-Mbps capability makes controlled differential routing, reference-plane continuity, and minimized stubs important even in industrial systems.
Informações de conformidade
The supplied search excerpts mention IEC ESD and IEC EFT bus protection but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
