ISO1430DW - 12Mbps Isolated RS-485/422 | Texas Instruments
MPN: ISO1430DW ✓ ActiveISO1430DW Overview
An isolated transceiver is an interface IC that transfers data across a galvanic barrier while electrically separating the bus-side and logic-side circuits. The ISO1430 belongs to the isolated differential transceiver hierarchy, combining an RS-485/RS-422 interface, signal isolation, and electromagnetic-interference protection. This isolation helps prevent ground-potential differences, fault energy, and common-mode disturbances from reaching the host electronics.
The primary specifications establish its industrial suitability: 12 Mbps maximum data rate, 5 kVrms isolation, half-duplex operation, support for both RS-485 and RS-422, and an operating temperature range of -40 °C to +125 °C. The 16-SOIC package supports surface-mount assembly, while the listed 3-7 business-day lead time provides useful procurement context. The device is identified as RoHS compliant and active.
The ISO1430DW is intended for harsh industrial environments where bus pins may encounter electrostatic-discharge and electrical-fast-transient events. Its EMC protection is a key functional attribute rather than merely a compliance label. The half-duplex architecture supports shared differential buses and reduces the number of physical data paths required when transmit and receive operations occur on the same pair of wires.
Typical uses include industrial automation equipment, factory-floor controllers, building-automation interfaces, motor-control systems, and industrial communications links operating at distances where noise immunity and isolation are important. The RS-422 capability also allows point-to-point or multidrop differential communication arrangements where appropriate termination and biasing are used.
Designers should place protection, termination, and isolation-layout elements according to the manufacturer datasheet and the selected bus topology. Cable length, transceiver data rate, connector design, grounding strategy, and external surge-protection requirements must be evaluated together; the 12-Mbps figure does not guarantee the same usable distance at every data rate.
This product page consolidates verified manufacturer and distributor information, practical application guidance, procurement details, and a conservative drop-in comparison. It also distinguishes verified alternatives from package-only or functionally similar parts that would require additional engineering review.
Drop-in alternatives for ISO1430DW — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ISO1430DW (same form factor and footprint) — differing in Maximum Data Rate, Package, Supported Standards.
ISO1430BDWR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO1410DWR
✅ Drop-InContact for price
View Datasheet →ISO1410BDWR
✅ Drop-In📋 Reference alternative (not in catalog)
ISO1430DW Specifications
| Product Type | EMC-protected isolated RS-485/RS-422 transceiver |
| Maximum Data Rate | 12 Mbps |
| Isolation Rating | 5 kVrms |
| Duplex Mode | Half-duplex |
| Supported Standards | TIA/EIA RS-485 and TIA/EIA RS-422 |
| EMC Protection | EMC protected |
| Operating Temperature Range | -40 °C to +125 °C |
| Package | 16-pin SOIC |
| Mounting Type | Surface mount |
| Lifecycle Status | Active |
| RoHS Status | Compliant |
| Isolation Rating Classification | Basic, reinforced |
| Integrated Isolated Power | No |
| Listed Lead Time | 3-7 business days |
| Manufacturer Minimum Order Quantity | 40 units |
| Distributor Price From | $3.6293 per unit at MOQ 40 |
| Driver and Receiver Configuration | 1/1 transceiver |
ISO1430DW 16-pin soic Pin Configuration Guide
Pin configuration for ISO1430DW (16-pin soic package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ISO1430DW.
Refer to the datasheet for full pin configuration.
Typical Applications
ISO1430DW is suitable for 6 applications: Industrial Automation Communication Bus, Building Automation Controller Interface, Motor Drive and Power-Control Isolation, Industrial Sensor and Remote I/O Link, Factory Data Acquisition Gateway, Process-Control and Instrumentation Network.
Industrial Automation Communication Bus
The ISO1430DW fits industrial automation links that require differential noise immunity and electrical separation between field equipment and a controller. Its 12-Mbps maximum data rate supports demanding short-distance communication, while the 5 kVrms isolation barrier helps prevent ground-potential differences and fault energy from reaching control electronics. The half-duplex interface allows a shared RS-485 bus when only one node transmits at a time. Designers should use the manufacturer’s bus layout, termination guidance, and isolation-capacitor recommendations to preserve EMC performance.
Recommended
Building Automation Controller Interface
The ISO1430DW is suitable for building-automation controllers that connect to long field wiring and remote HVAC, access-control, or sensor modules. The 5 kVrms isolation protects controller electronics from ground offsets and transients, while the EMC-protected RS-485/RS-422 interface improves robustness in electrically noisy buildings. Its -40 °C to +125 °C range allows use in both controlled room equipment and harsher peripheral enclosures. Appropriate bus biasing, termination, surge protection, and connector grounding remain essential for reliable long-cable operation.
Recommended
Motor Drive and Power-Control Isolation
The ISO1430DW can connect a motor-drive controller to an isolated RS-485 command or status network where high switching noise is present. Its 12-Mbps capability supports high-speed control feedback over suitable short bus runs, while the reinforced 5 kVrms isolation reduces coupling between noisy power electronics and the communications side. The EMC protection is particularly valuable around motor systems, but designers must still control cable routing, use proper termination, and place protection devices according to the application’s surge requirements.
Recommended
Industrial Sensor and Remote I/O Link
The ISO1430DW works for remote I/O and sensor concentrators that must communicate across industrial cable spans while remaining isolated from field-side wiring. Its half-duplex RS-485 mode supports economical multidrop wiring, and the same interface can be configured for RS-422 applications where appropriate point-to-point or multidrop topology is used. The 12-Mbps maximum rate permits short, high-speed links, while the 5 kVrms barrier increases system-level protection. Cable length must be reduced as data rate rises, and external surge protection may be needed.
Recommended
Factory Data Acquisition Gateway
The ISO1430DW is appropriate for a factory data-acquisition gateway collecting telemetry from remote instrumentation over an RS-485 or RS-422 network. Its 12-Mbps data rate supports high-throughput short links, and the isolation barrier helps the gateway withstand potential differences between widely distributed field devices. EMC protection is useful in environments containing motor drives and switching power supplies. The gateway should apply termination only where required by its topology, maintain controlled bus impedance, and use shielded cable with correctly implemented grounding.
Recommended
Process-Control and Instrumentation Network
The ISO1430DW can serve in process-control equipment requiring isolated differential communication between instruments and a control cabinet. Its -40 °C to +125 °C operating range supports industrial temperature conditions, and the 5 kVrms isolation helps preserve signal integrity where field equipment may be at a different ground potential. The device supports 12-Mbps signaling, but usable cable distance is a function of rate and topology. Engineers should follow the datasheet for bus termination and isolation-component placement and add surge protection for exposed installations.
Recommended
Recommended Products Summary
Engineering reference data for ISO1430DW — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO1430BDWR | ISO1410DWR | ISO1410BDWR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Maximum Data Rate | 12 Mbps | 12 Mbps | 12 Mbps | 12 Mbps |
| Duplex Mode | Half-duplex | Half-duplex | Half-duplex | Half-duplex |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
Key Differentiators
- High-rate isolated communications (vs ISO1410DWR)
- Wide industrial temperature operation (vs ISO1430BDWR)
- Dual RS-485 and RS-422 support (vs ISO1410BDWR)
Design Notes
Keep the isolated communication and logic domains physically separated as described in the manufacturer datasheet. Place isolation components and their required passive networks on the protected side of the isolation boundary, preserve the specified isolation-creepage area, and avoid routing copper or low-voltage signals beneath the barrier. This prevents the 5 kVrms isolation capability from being undermined by PCB contamination, parasitic coupling, or accidental copper bridges.
Do not select cable length from the 12-Mbps headline rate alone. RS-485 and RS-422 usable distance decreases as signaling rate increases, and the installed cable, connectors, stubs, topology, termination, and grounding influence the practical limit. Use the manufacturer’s communication guidelines, minimize stub lengths, apply termination only where required by the bus topology, and test the completed cable with its intended baud rate and loading.
The ISO1430DW is EMC protected, but that rating does not eliminate the need for a controlled external interface. Use twisted-pair cabling, properly terminated connectors, controlled chassis and signal grounding, and suitable surge protection for exposed cables. Keep switching-power and motor-drive return currents away from the isolated bus path so that common-mode energy does not overwhelm the transceiver’s communication margin.
Follow the ISO1430 datasheet for logic-side and bus-side supply selection, decoupling, and isolation-component requirements. Provide local high-frequency bypassing close to the device and verify startup behavior in systems where bus nodes power up at different times. Bus-side power architecture, isolated supply capability, and enable sequencing can affect interoperability even when the nominal 12-Mbps communication rate is supported.
Compliance Information
The supplied component listing explicitly identifies the ISO1430DW as RoHS compliant. REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals statuses were not supplied and remain unknown.