Overview
The ISO7231CDWR is a triple-channel digital isolator produced by Texas Instruments. This device is part of the ISO7230 and ISO7231 series, each featuring multiple channel configurations and output enable functions. The ISO7231CDWR uses Texas Instruments’ silicon dioxide (SiO2) isolation barrier to separate logic input and output buffers, effectively blocking high voltage, isolating grounds, and preventing noise currents from interfering with sensitive circuitry. It is designed to operate with isolated power supplies, enhancing the reliability and safety of the system.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Data Rate | 25 and 150 Mbps | - |
| Channel-to-Channel Output Skew | 1 ns maximum | ns |
| Pulse Width Distortion (PWD) | 2 ns maximum | ns |
| Jitter Content | 1 ns typical at 150 Mbps | ns |
| ESD Protection | 4 kV | - |
| Supply Voltage | 3.15 V to 5.5 V | V |
| Isolation Voltage | 2500 Vrms | Vrms |
| Common Mode Transient Immunity | 25 kV/μs | kV/μs |
| Propagation Delay tpLH / tpHL | 42 ns, 42 ns | ns |
| Rise / Fall Time | 2 ns, 2 ns | ns |
Key Features
- 25 and 150 Mbps signaling rate options
- Low channel-to-channel output skew; 1 ns maximum
- Low pulse-width distortion (PWD); 2 ns maximum
- Low jitter content; 1 ns typical at 150 Mbps
- Typical 25-Year Life at Rated Working Voltage
- 4 kV ESD protection
- Operate with 3.3V or 5V supplies
- 3.3V and 5V level translation
- High electromagnetic immunity
- –40°C to 125°C operating range
- Safety Related Certifications: DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1
Applications
- Factory Automation: Modbus, Profibus™, DeviceNet™ Data Buses
- Computer Peripheral Interface
- Servo Control Interface
- Data Acquisition
Q & A
- What is the ISO7231CDWR used for?
The ISO7231CDWR is used as a triple-channel digital isolator to block high voltage, isolate grounds, and prevent noise currents from interfering with sensitive circuitry in various applications such as factory automation, computer peripheral interfaces, servo control interfaces, and data acquisition.
- What are the signaling rate options for the ISO7231CDWR?
The ISO7231CDWR supports signaling rates of 25 Mbps and 150 Mbps.
- What is the operating temperature range of the ISO7231CDWR?
The operating temperature range is from –40°C to 125°C.
- What is the isolation voltage of the ISO7231CDWR?
The isolation voltage is 2500 Vrms.
- Does the ISO7231CDWR support 3.3V and 5V supplies?
- What are the safety certifications for the ISO7231CDWR?
The device has certifications such as DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1.
- What is the typical life expectancy of the ISO7231CDWR at rated working voltage?
The typical life expectancy is 25 years at rated working voltage.
- What is the ESD protection level of the ISO7231CDWR?
The device has 4 kV ESD protection.
- What is the propagation delay of the ISO7231CDWR?
The propagation delay is 42 ns for both tpLH and tpHL.
- What is the common mode transient immunity of the ISO7231CDWR?
The common mode transient immunity is 25 kV/μs.
