Overview
The ISO7741DBQ is a high-performance, quad-channel digital isolator produced by Texas Instruments. This device is part of the ISO774x family, which offers robust isolation barriers and high electromagnetic immunity. The ISO7741DBQ is specifically designed with three forward and one reverse-direction channel, making it versatile for various applications. It features a wide supply range of 2.25V to 5.5V and supports data rates up to 100Mbps. The device is available in a 16-pin QSOP package and is certified under several safety standards, including UL 1577, DIN EN IEC 60747-17, and IEC 61010-1, among others.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Isolation Rating | 3000 VRMS | - |
| Data Rate | 100 Mbps | - |
| Supply Voltage Range | 2.25V to 5.5V | V |
| Operating Temperature Range | -55°C to 125°C | °C |
| Propagation Delay | 10.7 ns (typical at 5V) | ns |
| Power Consumption per Channel | 1.5 mA (typical at 1 Mbps) | mA |
| Package Type | QSOP (DBQ-16) | - |
| Surge Capability | Up to 12.8 kV | kV |
| ESD Protection | ±8 kV IEC 61000-4-2 contact discharge | kV |
Key Features
- Robust isolation barrier with up to 5000 VRMS isolation rating and up to 12.8 kV surge capability.
- Wide supply range: 2.25V to 5.5V and level translation within this range.
- Default output high (ISO774x) and low (ISO774xF) options.
- Low power consumption, typical 1.5mA per channel at 1Mbps.
- Low propagation delay: 10.7ns typical (5V Supplies).
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, and surge immunity.
- ±8kV IEC 61000-4-2 contact discharge protection across the isolation barrier.
- Low emissions and high electromagnetic immunity.
- Enable pins for putting outputs in high impedance and reducing power consumption.
- Safety-related certifications including UL 1577, DIN EN IEC 60747-17, IEC 61010-1, and others.
Applications
- Industrial automation.
- Motor control.
- Power supplies.
- Solar inverters.
- Medical equipment.
- Used in conjunction with isolated power supplies to prevent noise currents on data buses such as RS-485, RS-232, and CAN.
Q & A
- What is the isolation rating of the ISO7741DBQ?
The ISO7741DBQ has an isolation rating of 3000 VRMS.
- What is the maximum data rate supported by the ISO7741DBQ?
The ISO7741DBQ supports data rates up to 100 Mbps.
- What is the operating temperature range of the ISO7741DBQ?
The operating temperature range is -55°C to 125°C.
- What type of package is the ISO7741DBQ available in?
The ISO7741DBQ is available in a 16-pin QSOP package.
- Does the ISO7741DBQ have ESD protection?
Yes, it has ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier.
- What are the safety certifications for the ISO7741DBQ?
The device is certified under UL 1577, DIN EN IEC 60747-17, IEC 61010-1, and other safety standards.
- What is the typical power consumption per channel at 1 Mbps?
The typical power consumption per channel at 1 Mbps is 1.5 mA.
- Can the ISO7741DBQ be used in automotive applications?
Yes, an automotive version (ISO774x-Q1) is available.
- What is the propagation delay of the ISO7741DBQ?
The propagation delay is typically 10.7 ns at 5V supplies.
- Is the ISO7741DBQ scheduled for obsolescence?
Yes, the ISO7741DBQ is scheduled for obsolescence and will be discontinued by the manufacturer.
