Overview
The ISO7741FDBQ 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 ISO7741FDBQ features a 3000VRMS isolation rating per UL 1577 and is packaged in a 16-pin QSOP (DBQ) package. It operates over a wide temperature range of –55°C to 125°C, making it suitable for various industrial and automotive applications. The device is known for its low power consumption, high data rate, and enhanced system-level ESD, EFT, and surge immunity.
Key Specifications
| Parameter | Value |
|---|---|
| Data Rate (Max) | 100 Mbps |
| Default Output | Low (for ISO774xF) |
| Forward/Reverse Channels | 3/1 |
| Isolation Rating | 3000 VRMS (DBQ package) |
| Number of Channels | 4 |
| Operating Temperature Range | –55°C to 125°C |
| Package Type | QSOP (DBQ-16) |
| Propagation Delay (Typical) | 10.7 ns (at 5V Supplies) |
| Surge Voltage Rating | Up to 12.8 kV |
| VCC (Min/Max) | 2.25 V / 5.5 V |
Key Features
- High-speed data rate of up to 100 Mbps
- Robust isolation barrier with >30-year projected lifetime at 1500 VRMS working voltage and up to 5000 VRMS isolation rating
- Up to 12.8 kV surge capability and ±100 kV/μs typical CMTI
- Wide supply range: 2.25 V to 5.5 V and level translation
- Default output high (ISO774x) and low (ISO774xF) options
- Wide temperature range: –55°C to 125°C
- Low power consumption, typical 1.5 mA per channel at 1 Mbps
- Low propagation delay: 10.7 ns typical (5V Supplies)
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, and surge immunity
- ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
- Low emissions and wide-SOIC (DW-16) and QSOP (DBQ-16) package options
- Automotive version available: ISO774x-Q1
- Safety-related certifications including DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1
Applications
- Industrial automation
- Motor control
- Power supplies
- Solar inverters
- Medical equipment
- Data buses such as RS-485, RS-232, and CAN
The ISO7741FDBQ is used in conjunction with isolated power supplies to prevent noise currents from interfering with or damaging sensitive circuitry, enhancing system-level ESD, EFT, surge, and emissions compliance.
Q & A
- What is the maximum data rate of the ISO7741FDBQ?
The maximum data rate of the ISO7741FDBQ is 100 Mbps.
- What is the isolation rating of the ISO7741FDBQ?
The isolation rating of the ISO7741FDBQ is up to 3000 VRMS (DBQ package).
- What is the operating temperature range of the ISO7741FDBQ?
The operating temperature range of the ISO7741FDBQ is –55°C to 125°C.
- What are the default output options for the ISO7741FDBQ?
The default output options are high for devices without the suffix F and low for devices with the suffix F.
- What is the typical power consumption per channel at 1 Mbps?
The typical power consumption per channel at 1 Mbps is 1.5 mA.
- What is the propagation delay of the ISO7741FDBQ?
The propagation delay is 10.7 ns typical (at 5V Supplies).
- Does the ISO7741FDBQ have any safety-related certifications?
Yes, it has certifications including DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1.
- What package options are available for the ISO7741FDBQ?
The device is available in 16-pin QSOP (DBQ) and 16-pin SOIC (DW) packages.
- Is the ISO7741FDBQ suitable for automotive applications?
Yes, an automotive version (ISO774x-Q1) is available.
- What is the surge voltage rating of the ISO7741FDBQ?
The surge voltage rating is up to 12.8 kV.
- Does the ISO7741FDBQ have ESD protection?
Yes, it has ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier.
