ISO1450DWR - 50Mbps Isolated RS-485/422 | Texas Instruments
Teilenummer: ISO1450DWR ✓ AktivISO1450DWR Übersicht
An isolated RS-485 or RS-422 transceiver is an interface IC that transfers differential data across a bus while electrically separating the logic-side circuitry from the cable-side circuitry. The isolation barrier helps protect low-voltage host electronics from ground-potential differences, surge energy, and industrial noise. Within the hierarchy of interface semiconductors, the ISO1450 is a differential line transceiver, a digital isolator, and ultimately a network and industrial communication interface IC.
The ISO1450DWR supports a maximum data rate of 50 Mbps in half-duplex operation. Its EMC protection is intended to help bus pins withstand electrostatic-discharge and electrical-fast-transient events encountered in harsh industrial environments. The 5-kVrms isolation rating is the central safety feature for factory automation, grid infrastructure, motor drives, and building-control systems. Operation from -40°C to +125°C supports a broad range of industrial temperature conditions.
The 16-pin SOIC (DW) package provides a conventional surface-mount footprint suitable for high-volume PCB assembly. Because the transceiver is half-duplex, driver and receiver paths share the bus connection, and the system must control transmit and receive states without contention. Isolation also requires careful treatment of bus-side supply voltage, ground, and printed-circuit-board creepage rather than treating the isolation barrier as a decorative layout feature.
Typical uses include isolated RS-485 links in PLC systems, photovoltaic inverters, HVAC controllers, industrial gateways, motor-control equipment, and building-automation nodes. Its 50-Mbps capability is useful for factory protocols, while 5-kVrms isolation supports applications where ground offsets or transient events could damage unprotected host circuitry.
Designers should verify the complete pin assignment and isolation-component requirements in the manufacturer datasheet. PCB layout should preserve isolation creepage and clearance, route bus traces away from sensitive logic, use suitable protection networks where the application requires them, and provide correctly decoupled isolated-side supplies. The verified source data does not provide the complete pin table, pricing, electrical thresholds, or lifecycle details needed to substitute assumptions.
This page consolidates verified manufacturer and distributor information with practical selection, layout, and comparison guidance. It distinguishes confirmed ISO1450DWR specifications from parameters that still require datasheet or quotation confirmation, helping engineers evaluate the 50-Mbps, 5-kVrms isolated interface without treating incomplete cross-reference information as a guaranteed drop-in replacement.
Drop-in-Alternativen für ISO1450DWR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ISO1450DWR (gleiche Bauform und Footprint) – abweichend in Package.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernISO1450DWR Technische Daten
| Product Type | Isolated RS-485 and RS-422 transceiver |
| Manufacturer | Texas Instruments |
| Maximum Data Rate | 50 Mbps |
| Duplex Mode | Half-duplex |
| Isolation Voltage | 5-kVrms |
| Supported Standards | TIA/EIA RS-485 and RS-422 |
| EMC Protection | EMC protected |
| ESD Protection | Bus pins withstand high-level IEC electrostatic-discharge events |
| EFT Protection | Bus pins withstand high-level IEC electrical-fast-transient events |
| Betriebstemperaturbereich | -40°C to +125°C |
| Gehäuse | 16-pin SOIC (DW) |
| Montageart | Surface mount |
| Transceiver Configuration | 1 transmitter and 1 receiver |
ISO1450DWR 16-pin soic (dw) Pinbelegungsleitfaden
Pinbelegung für ISO1450DWR (16-pin soic (dw)-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für ISO1450DWR.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ISO1450DWR ist geeignet für 6 Anwendungs: Industrial PLC and Factory Automation, Motor Drive and Power Electronics, Photovoltaic Inverter Monitoring, HVAC and Building Automation, Isolated Fieldbus Gateway, Grid and Utility Communications.
Industrial PLC and Factory Automation
The ISO1450DWR fits isolated PLC-to-fieldbus links that combine long cable runs with electrically noisy machinery. Its 50-Mbps maximum data rate provides ample bandwidth for common industrial protocols, while the 5-kVrms isolation barrier separates PLC logic from ground-shifted bus equipment. The half-duplex architecture suits multidrop RS-485 networks when the controller arbitrates transmit and receive states. The 16-pin SOIC (DW) package supports standard surface-mount assembly, although the exact bus-side and logic-side supply requirements must be confirmed from the manufacturer datasheet.
Empfohlen
Motor Drive and Power Electronics
ISO1450DWR is appropriate for command or feedback links between a motor controller and external equipment where switching nodes can create large common-mode disturbances. The confirmed 50-Mbps capability supports high-speed communications, and 5-kVrms isolation reduces the risk that transient activity on a field cable reaches the controller. Designers should retain the isolation boundary through bus-side power, protection components, and PCB layout. Cable termination, common-mode range, and fault-mode behavior must be validated for the specific motor-drive topology.
Empfohlen
Photovoltaic Inverter Monitoring
The ISO1450DWR can connect a photovoltaic inverter controller to monitoring equipment across a potentially noisy or ground-isolated communications link. Its documented 50-Mbps rate provides headroom for fast status reporting, and the 5-kVrms barrier helps protect control electronics from outdoor-cable transients. The device's -40°C to +125°C operating range is relevant to wide-temperature inverter environments. Final suitability still depends on the bus standard, connector selection, surge requirements, and whether the installed transceiver supports the exact inverter protocol.
Empfohlen
HVAC and Building Automation
ISO1450DWR supports isolated supervisory links between HVAC controllers, sensors, actuators, and building-network equipment. Its 50-Mbps half-duplex performance is more than sufficient for typical control and status traffic while offering margin for diagnostic data. The 5-kVrms isolation rating is valuable where long building cables connect equipment with different grounding potentials. For a real installation, engineers should verify protocol timing, common-mode limits, termination strategy, and the building's surge-protection requirements before releasing the design.
Empfohlen
Isolated Fieldbus Gateway
ISO1450DWR is suited to a gateway that translates between a host processor and an external RS-485 or RS-422 fieldbus. The isolation barrier separates the gateway's sensitive digital side from the line-side connector, while 50-Mbps operation supports demanding fieldbus traffic and diagnostic services. The SOIC (DW) package simplifies high-volume assembly and is appropriate for compact DIN-rail or embedded gateway hardware. Designers must preserve isolation spacing, use a compliant isolated-side supply, and verify the exact receiver failsafe behavior for disconnected or shorted cables.
Empfohlen
Grid and Utility Communications
The ISO1450DWR can be evaluated for utility communication equipment requiring a protected differential bus and a high isolation barrier. Its 50-Mbps data-rate capability supports high-throughput telemetry, and the documented EMC protection targets industrial transient environments. However, grid equipment may impose additional standards, fault-energy, temperature, and regulatory requirements beyond those established by the supplied data. Engineers should use the complete Texas Instruments datasheet and application-specific certification evidence before treating the device as suitable for high-energy grid installations.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ISO1450DWR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Package | 16-pin SOIC (DW) |
| Brand | Texas Instruments |
| Product Type | Isolated RS-485 and RS-422 transceiver |
| Maximum Data Rate | 50 Mbps |
| Duplex Mode | Half-duplex |
| Isolation Voltage | 5-kVrms |
| EMC Protection | EMC protected |
| Operating Temperature Range | -40°C to +125°C |
| Transceiver Configuration | 1 transmitter and 1 receiver |
Wichtigste Unterscheidungsmerkmale
- High-speed isolated differential interface (vs. ISO1410BDWR)
- Documented EMC-focused positioning (vs. ISO1410BDWR)
- Broad industrial temperature support (vs. ISO1410BDWR)
Designhinweise
Maintain the manufacturer-specified creepage and clearance across the isolation barrier. Keep bus-side copper, protection components, and test points away from logic-side copper so that soldering residue, rework, and conductive contamination cannot bridge the barrier. Route the differential pair together, avoid stubs, and use a continuous reference plane where the datasheet permits. Verify final spacing after adding connectors and surge-protection devices.
Use the transceiver's EMC protection as part of a complete protection strategy rather than as a substitute for a correctly designed cable interface. Place bus-side protection close to the connector, route protected copper before traces reach the transceiver, and keep switching power loops away from the differential pair. Confirm the external protection device's capacitance, standoff voltage, and pulse rating against the bus's actual surge exposure.
Do not assume that two devices in the same SOIC family are drop-in compatible merely because their package drawings match. The transceiver's supply pins, isolation architecture, enable or direction-control behavior, bus pin names, and fail-safe characteristics must all match. The supplied web data did not establish verified drop-in alternatives, so any substitution requires comparison with the complete Texas Instruments pinout and electrical tables.
Provide the required logic-side and bus-side supplies independently, with local decoupling placed close to the relevant device pins. The isolated bus side cannot be assumed to share the host ground merely because the communications link is differential. Confirm supply tolerances, startup behavior, and isolation-component requirements in the manufacturer datasheet before selecting output regulators or transformer-based isolated supplies.
Compliance-Informationen
The supplied verified excerpts mention IEC ESD and EFT bus-pin ruggedness but do not provide formal RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for ISO1450DWR. Compliance status must be confirmed from the current manufacturer product page or declarations.