Overview
The ISO7740FDWR is a high-performance, quad-channel digital isolator produced by Texas Instruments. This device is designed to provide robust electromagnetic compatibility (EMC) and high isolation ratings, making it suitable for a wide range of applications that require reliable and isolated data transmission. The ISO7740FDWR features a 5000VRMS isolation rating, a data rate of up to 100Mbps, and a wide operating temperature range from -55°C to 125°C. It is available in a 16-pin SOIC package and is compliant with various safety-related certifications, including UL 1577, DIN EN IEC 60747-17, and IEC 62368-1.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 16-Pin SOIC (DW) | |
| Number of Channels | 4 | |
| Isolation Rating | 5000 | VRMS |
| Data Rate | 100 | Mbps |
| Supply Voltage | 2.25 to 5.5 | V |
| Operating Temperature Range | -55 to 125 | °C |
| Propagation Delay (tpLH / tpHL) | 10.7ns (typical) | ns |
| Common Mode Transient Immunity (CMTI) | ±100kV/µs (typical) | kV/µs |
| Surge Capability | Up to 12.8kV | kV |
| ESD Protection | ±8kV IEC 61000-4-2 contact discharge | kV |
Key Features
- Robust isolation barrier with >30-year projected lifetime at 1500VRMS working voltage and up to 5000VRMS isolation rating.
- High data rate of up to 100Mbps and low propagation delay of 10.7ns (typical).
- Wide supply range: 2.25V to 5.5V and level translation capabilities.
- Default output high (ISO774x) and low (ISO774xF) options.
- Low power consumption, typical 1.5mA per channel at 1Mbps.
- System-level ESD, EFT, and surge immunity, and low emissions.
- Available in 16-pin SOIC and QSOP packages.
- Safety-related certifications including DIN EN IEC 60747-17, UL 1577, IEC 62368-1, and others.
Applications
The ISO7740FDWR is used in various applications that require high isolation and robust EMC performance. These include:
- Industrial control systems: For isolating data buses such as RS-485, RS-232, and CAN to prevent noise currents from interfering with sensitive circuitry.
- Medical devices: Compliant with safety standards like IEC 60601-1, making it suitable for medical equipment.
- Automotive systems: Available in automotive-grade versions (ISO774x-Q1) for use in vehicle control systems.
- Consumer electronics: For applications requiring high-speed data isolation and robust EMC performance.
Q & A
- What is the isolation rating of the ISO7740FDWR?
The ISO7740FDWR has an isolation rating of up to 5000VRMS. - What is the maximum data rate supported by the ISO7740FDWR?
The device supports a data rate of up to 100Mbps. - What is the operating temperature range of the ISO7740FDWR?
The operating temperature range is from -55°C to 125°C. - What types of packages are available for the ISO7740FDWR?
The device is available in 16-pin SOIC and QSOP packages. - Does the ISO7740FDWR have any safety-related certifications?
Yes, it is certified according to DIN EN IEC 60747-17, UL 1577, IEC 62368-1, and other safety standards. - What is the typical propagation delay of the ISO7740FDWR?
The typical propagation delay is 10.7ns. - How much power does the ISO7740FDWR typically consume?
The device typically consumes 1.5mA per channel at 1Mbps. - What is the common mode transient immunity (CMTI) of the ISO7740FDWR?
The CMTI is ±100kV/µs (typical). - Does the ISO7740FDWR have ESD protection?
Yes, it has ±8kV IEC 61000-4-2 contact discharge protection across the isolation barrier. - What are some common applications of the ISO7740FDWR?
Common applications include industrial control systems, medical devices, automotive systems, and consumer electronics.
