Overview
The ISO721QDRQ1 is a high-speed digital isolator manufactured by Texas Instruments. It is designed to provide electrical isolation between logic input and output buffers using a silicon dioxide (SiO2) insulation barrier. This barrier offers up to 4000V of current isolation, making it suitable for applications requiring noise immunity and protection for sensitive circuits. The device supports data rates from 0 Mbps (DC) to 100 Mbps and operates with supply voltages of 3.3V, 5V, or a combination of both. Its fault-safe circuitry ensures a logic high output in the absence of input signals, enhancing system reliability.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Isolation Voltage | 4000 | Vpk | Peak isolation voltage |
| Data Rate | 100 | Mbps | Maximum data rate |
| Supply Voltage | 3.3, 5 | V | Dual supply option |
| Propagation Delay | 17 | ns | Typical value |
| Operating Temperature | -40 to 125 | °C | Industrial range |
| Output Type | CMOS | - | Compatible with 5V logic |
| Package | 8-SOIC | - | Standard package |
Key Features
- High-speed data transmission up to 100 Mbps.
- Robust isolation with a 4000Vpk silicon dioxide barrier.
- Fault-safe output defaults to logic high in case of input signal loss.
- Supports dual supply voltages (3.3V and 5V) for versatile applications.
- Low propagation delay of 17 ns ensures real-time signal integrity.
Applications
The ISO721QDRQ1 is ideal for applications requiring high-speed digital isolation, such as industrial automation, motor control, and power supply systems. Its robust isolation capabilities make it suitable for environments with high electrical noise, ensuring reliable communication between sensitive circuits. Additionally, it is used in medical equipment and automotive electronics where safety and signal integrity are critical.
Q & A
What is the maximum data rate supported by ISO721QDRQ1?
The ISO721QDRQ1 supports a maximum data rate of 100 Mbps.
What is the isolation voltage of ISO721QDRQ1?
The isolation voltage is 4000Vpk.
What are the supply voltage options for ISO721QDRQ1?
It supports 3.3V, 5V, or a combination of both.
What is the typical propagation delay of ISO721QDRQ1?
The typical propagation delay is 17 ns.
What is the operating temperature range of ISO721QDRQ1?
It operates within a temperature range of -40°C to 125°C.
What is the output type of ISO721QDRQ1?
The output type is CMOS, compatible with 5V logic.
What package does ISO721QDRQ1 come in?
It is available in an 8-SOIC package.
What is the fault-safe feature of ISO721QDRQ1?
In the absence of input signals, the output defaults to a logic high state.
Is ISO721QDRQ1 suitable for automotive applications?
Yes, it is suitable for automotive electronics due to its robust isolation and reliability.
Can ISO721QDRQ1 be used in medical equipment?
Yes, its high isolation voltage and fault-safe design make it suitable for medical applications.
