Overview
The ISO7842FDWW from Texas Instruments is a high-performance, quad-channel digital isolator designed to provide robust electrical isolation and reliable data transfer in various industrial and medical applications. This device features a reinforced isolation barrier with a maximum transient isolation voltage of 8000 VPK, ensuring high electromagnetic immunity and low emissions. The ISO7842FDWW supports signaling rates up to 100 Mbps and operates over a wide supply range of 2.25 V to 5.5 V, making it versatile for different system requirements.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Signaling Rate | 0 | 100 | Mbps | ||
| Supply Voltage Range | 2.25 | 5.5 | V | ||
| Junction Temperature | –55 | 150 | °C | ||
| Ambient Temperature | –55 | 125 | °C | ||
| High-level Input Voltage | VIH | 0.7 × VCCI | VCCI | V | |
| Low-level Input Voltage | VIL | 0 | 0.3 × VCCI | V | |
| Maximum Power Dissipation | 200 | mW | |||
| Maximum Isolation Voltage | 8000 | VPK | |||
| Package Type | 16-pin SOIC (DWW) |
Key Features
- High-performance, quad-channel digital isolator with up to 100 Mbps signaling rate.
- Wide supply range of 2.25 V to 5.5 V and level translation capability.
- Reinforced isolation with 8000 VPK transient isolation voltage and certifications from VDE, CSA, CQC, and TUV.
- Low power consumption and high electromagnetic immunity.
- Enable pins for high impedance output and multi-master driving applications.
- Available in 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.
Applications
- Industrial Automation
- Motor Control
- Power Supplies
- Solar Inverters
- Medical Equipment
- Hybrid Electric Vehicles
Q & A
- What is the maximum signaling rate of the ISO7842FDWW?
The maximum signaling rate is up to 100 Mbps.
- What is the supply voltage range for the ISO7842FDWW?
The supply voltage range is from 2.25 V to 5.5 V.
- What are the key certifications for the ISO7842FDWW?
The device is certified according to VDE, CSA, CQC, and TUV standards.
- What is the maximum transient isolation voltage of the ISO7842FDWW?
The maximum transient isolation voltage is 8000 VPK.
- What are the package options for the ISO7842FDWW?
The device is available in 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.
- What are some of the key applications for the ISO7842FDWW?
Key applications include industrial automation, motor control, power supplies, solar inverters, medical equipment, and hybrid electric vehicles.
- How does the ISO7842FDWW handle power consumption?
The device is designed for low power consumption, with supply currents varying based on the operating conditions and signaling rates.
- What is the purpose of the enable pins on the ISO7842FDWW?
The enable pins can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption.
- What is the default output state if the input power or signal is lost?
The default output is high for the ISO7842 device and low for the ISO7842F device.
- How does the ISO7842FDWW enhance electromagnetic compatibility?
The device has been designed with innovative chip design and layout techniques to significantly enhance electromagnetic compatibility and ease system-level ESD, EFT, surge, and emissions compliance.
