Overview
The ISO7742FDWR is a high-performance, quad-channel digital isolator produced by Texas Instruments. This device is designed to provide robust galvanic isolation, protecting sensitive circuitry from high voltage transients and noise. It is particularly suited for applications requiring high insulation ratings, such as industrial automation, communication systems, and power supplies.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (DW)-16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Isolation Rating | Basic, Reinforced (up to 5000VRMS) |
| Number of Channels | 4 (2 forward / 2 reverse) |
| Data Rate (max) (Mbps) | 100 |
| Surge Isolation Voltage (VIOSM) (VPK) | 6400, 12800 |
| Transient Isolation Voltage (VIOTM) (VPK) | 4242, 8000 |
| Withstand Isolation Voltage (VISO) (Vrms) | 3000, 5000 |
| CMTI (min) (V/µs) | 85000 |
| Supply Voltage (max) (V) | 5.5 |
| Supply Voltage (min) (V) | 2.25 |
| Propagation Delay Time (typ) (ns) | 10.7 |
| Current Consumption per Channel (DC) (typ) (mA) | 1.75 |
| Current Consumption per Channel (1 Mbps) (typ) (mA) | 2.325 |
Key Features
- High-speed data transmission up to 100Mbps
- Robust isolation barrier with >30-year projected lifetime at 1500VRMS working voltage
- Up to 5000VRMS isolation rating and up to 12.8kV surge capability
- Wide supply range: 2.25V to 5.5V with level translation
- Default output high and low options
- Low power consumption, typical 1.5mA per channel at 1Mbps
- Low propagation delay: 10.7ns typical (5V Supplies)
- Robust electromagnetic compatibility (EMC) and system-level ESD, EFT, and surge immunity
- ±8kV IEC 61000-4-2 contact discharge protection across isolation barrier
- Safety-related certifications: DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1
Applications
The ISO7742FDWR is commonly used in various applications that require high-speed digital isolation and robust electromagnetic compatibility. These include:
- Industrial automation
- Motor control systems
- Power delivery systems
- Communication systems
- Applications requiring high insulation ratings and noise immunity
Q & A
- What is the primary function of the ISO7742FDWR?
The ISO7742FDWR is a quad-channel digital isolator that provides galvanic isolation to protect sensitive circuitry from high voltage transients and noise. - What is the maximum data rate supported by the ISO7742FDWR?
The maximum data rate supported is 100Mbps. - What are the isolation ratings for the ISO7742FDWR?
The device has isolation ratings of up to 5000VRMS and up to 12.8kV surge capability. - What is the operating temperature range of the ISO7742FDWR?
The operating temperature range is -55°C to 125°C. - What are the supply voltage ranges for the ISO7742FDWR?
The supply voltage ranges from 2.25V to 5.5V. - Does the ISO7742FDWR have any safety-related certifications?
Yes, it has certifications such as DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1. - What is the typical propagation delay of the ISO7742FDWR?
The typical propagation delay is 10.7ns at 5V supplies. - How much current does the ISO7742FDWR typically consume per channel at 1Mbps?
The typical current consumption per channel at 1Mbps is 2.325mA. - Is the ISO7742FDWR resistant to ESD and EFT?
Yes, it is robust against ESD and EFT with ±8kV IEC 61000-4-2 contact discharge protection. - In what package is the ISO7742FDWR available?
The ISO7742FDWR is available in a SOIC (DW)-16 package.
