Overview
The ISO1450DW is a high-performance, isolated RS-485/RS-422 transceiver manufactured by Texas Instruments. This device is designed to provide robust galvanic isolation, making it suitable for use in harsh industrial environments. The ISO1450DW integrates the transceiver and isolation components into a single package, eliminating the need for external isolation transformers. This integration enhances reliability, reduces component count, and minimizes board space.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage, Side 1 (VCC1) | 1.71 | - | 5.5 | V |
| Supply Voltage, Side 2 (VCC2) | 3 | - | 5.5 | V |
| Operating Ambient Temperature (TA) | -40 | - | 125 | °C |
| Signaling Rate | - | - | 50 Mbps | - |
| Maximum Working Isolation Voltage (VIOWM) | - | - | 1060 VRMS / 1500 VPK | - |
| Maximum Transient Isolation Voltage (VIOTM) | - | - | 7071 VPK | - |
| Insulation Resistance (RIO) | - | - | > 10^12 Ω | - |
| Barrier Capacitance (CIO) | - | - | 1 pF | - |
Key Features
- Compatible with TIA/EIA-485-A and PROFIBUS at 5V bus-side supply.
- Integrated galvanic isolation, eliminating the need for external isolation transformers.
- Bus I/O protection: ±30kV HBM, ±16kV IEC 61000-4-2 contact discharge, and ±4kV IEC 61000-4-4 electrical fast transient.
- High-speed data transmission up to 50 Mbps.
- Half-duplex operation.
- EMC protected.
- Safety certifications: VDE, CSA, UL, CQC, TUV, and compliance with various international standards (e.g., IEC 60950-1, IEC 62368-1, IEC 60601-1)).
Applications
- Industrial automation and control systems.
- Fieldbus communications (e.g., PROFIBUS).
- Harsh industrial environments requiring galvanic isolation.
- RS-485 and RS-422 network interfaces.
- Electrical stations and power distribution systems.
Q & A
- What is the ISO1450DW?
The ISO1450DW is a high-performance, isolated RS-485/RS-422 transceiver manufactured by Texas Instruments.
- What are the key benefits of using the ISO1450DW?
The key benefits include integrated galvanic isolation, high-speed data transmission up to 50 Mbps, and robust bus I/O protection.
- What are the operating voltage ranges for the ISO1450DW?
The supply voltage for Side 1 (VCC1) ranges from 1.71V to 5.5V, and for Side 2 (VCC2) ranges from 3V to 5.5V).
- What is the maximum working isolation voltage of the ISO1450DW?
The maximum working isolation voltage is 1060 VRMS / 1500 VPK).
- Is the ISO1450DW compatible with PROFIBUS?
Yes, it is compatible with PROFIBUS at a 5V bus-side supply).
- What are the safety certifications for the ISO1450DW?
The device is certified according to various standards including VDE, CSA, UL, CQC, TUV, and compliance with IEC 60950-1, IEC 62368-1, and IEC 60601-1).
- What is the maximum signaling rate of the ISO1450DW?
The maximum signaling rate is 50 Mbps).
- Can the ISO1450DW replace traditional isolation transformers?
Yes, it can replace traditional isolation transformers due to its integrated galvanic isolation).
- What is the operating ambient temperature range for the ISO1450DW?
The operating ambient temperature range is from -40°C to 125°C).
- What package type is the ISO1450DW available in?
The ISO1450DW is available in a SOIC (DW) package with 16 pins).
