Overview
The ISO7742FDBQR is a high-performance, quad-channel digital isolator produced by Texas Instruments. This device is part of the ISO774x family, which is designed to provide robust isolation and high electromagnetic immunity. The ISO7742FDBQR features a 3000VRMS isolation rating per UL 1577 and is available in a 16-pin QSOP (DBQ) package. It is suitable for a wide range of applications requiring reliable and high-speed data isolation.
Key Specifications
| Specification | Value |
|---|---|
| Package | QSOP (DBQ-16) |
| Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Isolation Rating (VRMS) | 3000 (DBQ package) |
| Data Rate | 100Mbps |
| Supply Voltage Range | 2.25V to 5.5V |
| Propagation Delay (typical at 5V Supplies) | 10.7ns |
| Power Consumption (typical per channel at 1Mbps) | 1.5mA |
| CMTI (typical) | ±100kV/µs |
| Surge Capability | Up to 12.8kV |
| ESD Protection | ±8kV IEC 61000-4-2 contact discharge |
Key Features
- Robust isolation barrier with >30-year projected lifetime at 1500VRMS working voltage
- Up to 5000VRMS isolation rating (DW package) and 3000VRMS (DBQ package)
- Up to 12.8kV surge capability
- Wide supply range: 2.25V to 5.5V and level translation
- Default output high (ISO774x) and low (ISO774xF) options
- Low power consumption and low propagation delay
- Robust electromagnetic compatibility (EMC) and system-level ESD, EFT, and surge immunity
- Automotive version available: ISO774x-Q1
- 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 ISO7742FDBQR is used in various applications that require high-speed data isolation and robust electromagnetic compatibility. These include:
- Industrial control systems
- Automotive systems (with the ISO774x-Q1 version)
- Medical devices requiring high isolation and low emissions
- Data communication systems such as RS-485, RS-232, and CAN
- Isolated power supplies and other circuits where noise currents need to be prevented from interfering with sensitive circuitry
Q & A
- What is the isolation rating of the ISO7742FDBQR? The ISO7742FDBQR has a 3000VRMS isolation rating per UL 1577 in the DBQ package.
- What is the data rate of the ISO7742FDBQR? The data rate is up to 100Mbps.
- What is the operating temperature range of the ISO7742FDBQR? The operating temperature range is -55°C to 125°C.
- What are the package options for the ISO774x devices? The devices are available in 16-pin SOIC (DW) and QSOP (DBQ) packages.
- Does the ISO7742FDBQR have automotive certification? Yes, an automotive version (ISO774x-Q1) is available.
- What is the typical power consumption per channel at 1Mbps? The typical power consumption is 1.5mA per channel at 1Mbps.
- What is the propagation delay of the ISO7742FDBQR? The propagation delay is typically 10.7ns at 5V supplies.
- Does the ISO7742FDBQR have ESD protection? Yes, it has ±8kV IEC 61000-4-2 contact discharge protection across the isolation barrier.
- What safety certifications does the ISO7742FDBQR have? 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.
- How many channels does the ISO7742FDBQR have and what are their directions? The ISO7742FDBQR has four channels, with two forward and two reverse-direction channels.
