Overview
The ISO7742QDBQRQ1, manufactured by Texas Instruments, is a high-performance, automotive-grade digital isolator designed for robust and reliable signal isolation in demanding environments. This device is part of the ISO774x-Q1 family, which is specifically engineered to meet the stringent requirements of automotive applications. With its four-channel configuration, the ISO7742QDBQRQ1 provides two forward and two reverse channels, making it ideal for applications requiring bidirectional communication. Its key strengths include high data rates, low power consumption, and exceptional electromagnetic compatibility (EMC) performance, ensuring reliable operation in noisy environments. The device is housed in a compact SSOP-16 package, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Data Rate | 100 | Mbps | |
| Isolation Voltage | 5000 | VRMS | DW Package |
| CMTI | ±100 | kV/µs | Typical |
| Supply Voltage | 2.25 - 5.5 | V | |
| Propagation Delay | 10.7 | ns | Typical at 5V |
| Operating Temperature | -40 to 125 | °C | |
| Package | SSOP-16 | ||
| Certifications | AEC-Q100, UL 1577, IEC 61010-1 |
Key Features
- High-speed data transmission up to 100 Mbps.
- Robust isolation with a 5000 VRMS rating.
- Low power consumption, typically 1.5 mA per channel at 1 Mbps.
- Excellent EMC performance with system-level ESD, EFT, and surge immunity.
- Default output high (ISO774x) or low (ISO774xF) options.
- Compact SSOP-16 package for space-constrained designs.
Applications
The ISO7742QDBQRQ1 is widely used in automotive systems, industrial automation, and other applications requiring reliable signal isolation. In automotive electronics, it ensures safe and noise-free communication between control units and sensors. In industrial settings, it is employed in motor control, power inverters, and PLCs to isolate high-voltage circuits from low-voltage control systems. Its high-speed and low-power characteristics also make it suitable for consumer electronics, such as smart home devices and IoT applications, where efficient and reliable isolation is critical.
Q & A
1. What is the maximum data rate of the ISO7742QDBQRQ1?
The maximum data rate is 100 Mbps.
2. What is the isolation voltage rating of this device?
The isolation voltage rating is 5000 VRMS for the DW package.
3. Is the ISO7742QDBQRQ1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified and designed for automotive use.
4. What is the typical power consumption of this isolator?
It typically consumes 1.5 mA per channel at 1 Mbps.
5. What are the default output options?
Default output can be high (ISO774x) or low (ISO774xF).
6. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
7. What certifications does the ISO7742QDBQRQ1 have?
It is certified to AEC-Q100, UL 1577, and IEC 61010-1 standards.
8. What package does this device come in?
It is available in an SSOP-16 package.
9. What is the typical propagation delay?
The typical propagation delay is 10.7 ns at 5V.
10. Can this device be used in industrial automation?
Yes, it is suitable for industrial automation applications such as motor control and PLCs.
