Overview
The ISO7131CCDBQR is a low-power, triple-channel digital isolator produced by Texas Instruments. This device is part of the ISO71xxCC series, designed to provide high-speed data isolation with integrated noise filters, making it suitable for noise-prone applications. The ISO7131CC features three isolation channels, with two forward and one reverse-direction channel, enabling robust and reliable data transmission across different voltage domains.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC1, VCC2) | 2.7 | 5.5 | V | |
| Signaling Rate (VCC ≥ 4.5 V) | 50 | Mbps | ||
| Signaling Rate (VCC < 4.5 V) | 40 | Mbps | ||
| Propagation Delay (Typical at 3.3 V) | 23 | ns | ||
| Isolation Voltage (1 minute) | 2500 | VRMS | ||
| Ambient Temperature | -40 | 125 | °C | |
| Supply Current per Channel (Typical at 3.3 V, 1 Mbps) | 1.9 | 2.7 | 3.8 | mA |
Key Features
- High-Speed Data Isolation: Supports up to 50 Mbps data rate with 5-V supplies and up to 40 Mbps with 3.3-V or 2.7-V supplies.
- Integrated Noise Filters: Built-in filters on the inputs to enhance noise immunity in noise-prone applications.
- Low Power Consumption: Typical supply current per channel is 1.9 mA at 1 Mbps with 3.3-V supplies.
- Robust Design: Features a silicon dioxide (SiO2) insulation barrier for reliable isolation.
- Wide Temperature Range: Operates from -40°C to 125°C.
- Transient Immunity: Offers 50-kV/µs transient immunity.
- Default Output State Option: Available with default output state as low (suffix F) or high.
Applications
- General-Purpose Isolation: Suitable for various isolation needs in industrial and commercial environments.
- Industrial Fieldbus: Compatible with protocols such as Profibus, Modbus, and DeviceNet.
- Serial Interfaces: Can be used in RS-232, RS-485, and Serial Peripheral Interface (SPI) applications.
- Data Acquisition Systems: Can be combined with precision analog-to-digital converters and mixed-signal microcontrollers for advanced isolated data acquisition systems.
Q & A
- What is the maximum signaling rate of the ISO7131CC?
The ISO7131CC supports up to 50 Mbps with 5-V supplies and up to 40 Mbps with 3.3-V or 2.7-V supplies.
- What is the typical propagation delay of the ISO7131CC?
The typical propagation delay is 23 ns at 3.3 V.
- What is the isolation voltage rating of the ISO7131CC?
The device is rated for 2500 VRMS isolation voltage for 1 minute.
- What is the operating temperature range of the ISO7131CC?
The device operates from -40°C to 125°C.
- How much power does the ISO7131CC typically consume per channel at 1 Mbps with 3.3-V supplies?
The typical supply current per channel is 1.9 mA at 1 Mbps with 3.3-V supplies.
- Does the ISO7131CC have built-in noise filters?
- What are the default output state options for the ISO7131CC?
The device is available with default output state as low (suffix F) or high.
- Can the ISO7131CC be used in industrial fieldbus applications?
- Is the ISO7131CC suitable for serial interface applications?
- Can the ISO7131CC be part of an advanced isolated data acquisition system?
