Overview
The ISO1432BDW is a galvanically-isolated differential line transceiver designed for TIA/EIA RS-485 and RS-422 applications. Produced by Texas Instruments, this device is engineered to operate in harsh industrial environments, offering high levels of noise immunity and protection against electrostatic discharge (ESD) and electrical fast transient (EFT) events. The ISO1432BDW is packaged in a wide-body SOIC-16 package and is pin compatible with most isolated RS-485 transceivers, making it a versatile choice for various industrial communication systems.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (DW) with 16 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Data Rates | 500kbps, 12Mbps, and 50Mbps |
| Logic-Side Supply (VCC1) | 1.71V to 5.5V |
| Bus-Side Supply (VCC2) | 3V to 5.5V |
| Isolation Voltage | 5000VRMS for 1 minute per UL 1577 |
| ESD Protection | ±30kV HBM, ±16kV IEC 61000-4-2 Contact discharge, ±4kV IEC 61000-4-4 Electrical fast transient |
| Common-Mode Transient Immunity | 100kV/µs (typical) |
| Safety Certifications | 7071VPK VIOTM and 1500VPK VIORM, IEC 60950-1, IEC 62368-1, IEC 60601-1, IEC 61010-1, CQC, TUV, and CSA approvals |
Key Features
- Compatible with TIA/EIA-485-A and PROFIBUS at 5V bus-side supply
- Bus I/O protection and failsafe receiver for bus open, short, and idle conditions
- Low-EMI operation at various data rates
- 1/8 Unit load up to 256 nodes on bus
- Glitch-free power-up and power-down for hot plug-in
- Extended temperature range from –40°C to 125°C
- PIN compatible to most isolated RS-485 transceivers
- Safety-related certifications including 7071VPK VIOTM and 1500VPK VIORM, and various international standards
Applications
The ISO1432BDW is designed for use in harsh industrial environments and is suitable for a variety of applications, including:
- Industrial automation and control systems
- Building automation and control systems
- Medical devices requiring isolation
- Telecommunications and networking equipment
- Automotive and aerospace systems where high reliability is crucial
Q & A
- What is the ISO1432BDW used for?
The ISO1432BDW is a galvanically-isolated differential line transceiver for TIA/EIA RS-485 and RS-422 applications, designed for use in harsh industrial environments.
- What is the operating temperature range of the ISO1432BDW?
The operating temperature range is from –40°C to 125°C.
- What are the supported data rates for the ISO1432BDW?
The device supports data rates of 500kbps, 12Mbps, and 50Mbps.
- What kind of ESD protection does the ISO1432BDW offer?
The device offers ±30kV HBM, ±16kV IEC 61000-4-2 Contact discharge, and ±4kV IEC 61000-4-4 Electrical fast transient protection.
- Is the ISO1432BDW compatible with PROFIBUS?
- What is the isolation voltage of the ISO1432BDW?
The isolation voltage is 5000VRMS for 1 minute per UL 1577.
- Does the ISO1432BDW have any safety certifications?
- Can the ISO1432BDW be used in hot plug-in applications?
- How many nodes can be supported on the bus with the ISO1432BDW?
- What is the common-mode transient immunity of the ISO1432BDW?
