Model No: ISOW1412DFMR
Texas Instruments ISOW1412DFMR
Manufacturer: Texas Instruments
SEMICON NO.: ISOW1412DFMR
Package: 20-SOIC
Stock: In stock
Description: IC DGTL ISO 5KV 4CH RS422 RS485
SEMICON NO.: ISOW1412DFMR
Package: 20-SOIC
Stock: In stock
Description: IC DGTL ISO 5KV 4CH RS422 RS485
Quantity :
| Mfr | Texas Instruments |
| Product Type | 4-Channel Digital Isolator with Integrated DC/DC Converter |
| Isolation Rating | 5000 VRMS (1 min, reinforced isolation) |
| Data Rate | Up to 100 Mbps (channel-dependent) |
| Channels | 4 bidirectional channels (configurable as 4x TX/RX) |
| Default Output State | High (default) or low (pin-selectable) |
| Propagation Delay | 11 ns (typical, 3.3V supply) |
| Pulse Width Distortion | 2 ns (typical) |
| Output Power | 3.3V or 5V isolated DC/DC converter (output selectable) |
| Standby Current | Up to 420 mW (isolated supply) |
| Input Voltage Range | 3.0V to 5.5V (primary side) |
| Isolation Voltage | 3000 VDC |
| Operating Temperature | -40°C to +125°C |
| Package / Case | 20-SOIC |
ISOW1412DFMR Isolated RS-485 transceiver
The ISOW1412DFMR is a reinforced 5-kVRMS isolated RS-485/RS-422 transceiver with an integrated low-emissions DC-DC converter, designed for long-distance communication applications. It eliminates the need for a separate isolated power supply, making it ideal for space-constrained designs. The device features a low-emissions DC-DC converter that meets CISPR 32 Class B radiated emission limits on a two-layer PCB, ensuring high efficiency and low noise performance.
Specification characteristics
The ISOW1412DFMR meets or exceeds the TIA/EIA-485A standard and supports a data rate of up to 500 kbps. It features an integrated low-emissions DC-DC converter with typical efficiency of 46% and an output voltage accuracy of ±5%. The device operates with a logic supply (VIO) ranging from 1.71 V to 5.5 V and a power converter supply (VDD) from 3 V to 5.5 V. It supports RS-485 with PROFIBUS compatibility, offering failsafe operation for open, short, and idle bus conditions. The device also includes high common-mode transient immunity (100 kV/µs typical), high ESD bus protection (±16 kV HBM), and operates within a temperature range of -40°C to 125°C. It is available in a 20-pin wide SOIC package and complies with various safety certifications, including VDE reinforced insulation and UL 1577.
Precautions
When using the ISOW1412DFMR, ensure that the device is powered within the specified voltage ranges for VIO and VDD to maintain optimal performance. The integrated DC-DC converter can be disabled using the EN pin to save power when bus communication is not required. Proper layout guidelines should be followed to minimize radiated emissions and ensure compliance with CISPR 32 Class B standards. Additionally, ensure that the device is operated within its specified temperature range to avoid thermal shutdown and maintain reliability.
Application scenarios
The ISOW1412DFMR is suitable for a variety of industrial and commercial applications, including factory automation, building automation, industrial transport, solar inverters, protection relays, and motor drives. Its ability to break ground loops and support long-distance communication makes it ideal for systems requiring high reliability and noise immunity.
Alternative models
Alternative models to the ISOW1412DFMR include the ISOW1432DFMR, which supports a higher data rate of up to 12 Mbps, making it suitable for applications requiring faster communication speeds.
The ISOW1412DFMR is a reinforced 5-kVRMS isolated RS-485/RS-422 transceiver with an integrated low-emissions DC-DC converter, designed for long-distance communication applications. It eliminates the need for a separate isolated power supply, making it ideal for space-constrained designs. The device features a low-emissions DC-DC converter that meets CISPR 32 Class B radiated emission limits on a two-layer PCB, ensuring high efficiency and low noise performance.
Specification characteristics
The ISOW1412DFMR meets or exceeds the TIA/EIA-485A standard and supports a data rate of up to 500 kbps. It features an integrated low-emissions DC-DC converter with typical efficiency of 46% and an output voltage accuracy of ±5%. The device operates with a logic supply (VIO) ranging from 1.71 V to 5.5 V and a power converter supply (VDD) from 3 V to 5.5 V. It supports RS-485 with PROFIBUS compatibility, offering failsafe operation for open, short, and idle bus conditions. The device also includes high common-mode transient immunity (100 kV/µs typical), high ESD bus protection (±16 kV HBM), and operates within a temperature range of -40°C to 125°C. It is available in a 20-pin wide SOIC package and complies with various safety certifications, including VDE reinforced insulation and UL 1577.
Precautions
When using the ISOW1412DFMR, ensure that the device is powered within the specified voltage ranges for VIO and VDD to maintain optimal performance. The integrated DC-DC converter can be disabled using the EN pin to save power when bus communication is not required. Proper layout guidelines should be followed to minimize radiated emissions and ensure compliance with CISPR 32 Class B standards. Additionally, ensure that the device is operated within its specified temperature range to avoid thermal shutdown and maintain reliability.
Application scenarios
The ISOW1412DFMR is suitable for a variety of industrial and commercial applications, including factory automation, building automation, industrial transport, solar inverters, protection relays, and motor drives. Its ability to break ground loops and support long-distance communication makes it ideal for systems requiring high reliability and noise immunity.
Alternative models
Alternative models to the ISOW1412DFMR include the ISOW1432DFMR, which supports a higher data rate of up to 12 Mbps, making it suitable for applications requiring faster communication speeds.
