Overview
The ISO7231CDW is a triple-channel digital isolator produced by Texas Instruments. This device is designed to provide high-speed data transfer with multiple channel configurations and output enable functions. It features logic input and output buffers separated by TI’s silicon dioxide (SiO2) isolation barrier, which helps in blocking high voltage, isolating grounds, and preventing noise currents from interfering with sensitive circuitry. The ISO7231CDW is suitable for use in conjunction with isolated power supplies, enhancing the reliability and safety of the system.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 3 Channel | |
| Isolation Type | Capacitive Coupling | |
| Data Rate | 25 Mb/s | |
| Propagation Delay Time | 32 ns | |
| Supply Voltage - Min | 3.3 V | |
| Supply Voltage - Max | 5 V | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | +125°C | |
| Package / Case | SOIC-16 | |
| ESD Protection | 4kV | |
| Maximum Repetitive Peak Isolation Voltage | 560 VPK (AC voltage, bipolar) | |
| Maximum Transient Isolation Voltage | 4000 VPK |
Key Features
- 25 and 150 Mbps signaling rate options with low channel-to-channel output skew (1 ns maximum) and low pulse-width distortion (2 ns maximum).
- Typical 25-year life at rated working voltage and high electromagnetic immunity.
- Operates with 3.3V or 5V supplies and supports 3.3V and 5V level translation.
- 4kV ESD protection and safety-related certifications including DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1.
- Wide operating temperature range from -40°C to 125°C.
Applications
- Factory Automation: Modbus, Profibus™, DeviceNet™ data buses.
- Computer Peripheral Interface.
- Servo Control Interface.
- Data Acquisition.
Q & A
- What is the primary function of the ISO7231CDW?
The ISO7231CDW is a triple-channel digital isolator designed to isolate high voltage, grounds, and prevent noise currents from interfering with sensitive circuitry.
- What are the available signaling rates for the ISO7231CDW?
The device supports signaling rates of 25 Mbps and 150 Mbps.
- What is the maximum operating temperature of the ISO7231CDW?
The maximum operating temperature is +125°C.
- What type of isolation does the ISO7231CDW use?
The device uses capacitive coupling for isolation.
- What are the safety certifications for the ISO7231CDW?
The device is certified under DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1.
- What is the propagation delay time of the ISO7231CDW?
The propagation delay time is 32 ns.
- Can the ISO7231CDW operate with both 3.3V and 5V supplies?
- What is the ESD protection level of the ISO7231CDW?
The device has 4kV ESD protection.
- In what types of applications is the ISO7231CDW commonly used?
The device is commonly used in factory automation, computer peripheral interfaces, servo control interfaces, and data acquisition.
- What is the package type of the ISO7231CDW?
The device comes in a SOIC-16 package.
