Overview
The ISO7241CDWR is a quad-channel digital isolator produced by Texas Instruments. This device is part of the ISO7241x family, which features three channels in the same direction and one channel in the opposite direction. The ISO7241CDWR is designed to provide high isolation between logic-input and logic-output buffers, separated by Texas Instruments’ silicon-dioxide (SiO2) isolation barrier. This isolation helps block high voltages, isolate grounds, and prevent noise currents from interfering with or damaging sensitive circuitry. The device operates with 3.3V or 5V supplies and is characterized for operation over an ambient temperature range of –40°C to +125°C.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (DW) with 16 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Signaling Rate Options | 25 and 150 Mbps |
| Channel-to-Channel Output Skew | 1 ns Maximum |
| Pulse-Width Distortion (PWD) | 2 ns Maximum |
| Jitter Content at 150 Mbps | 1 ns Typical |
| Isolation Voltage | 2500 Vrms |
| Common Mode Transient Immunity (CMTI) | 25 kV/μs |
| ESD Protection | 4 kV |
| Voltage Supply Compatibility | 3.3V or 5V on either side |
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
- Selectable default output (for ISO7240CF devices)
- 25-year life at rated working voltage
- 4 kV ESD protection
- Operates with 3.3V or 5V supplies
- High electromagnetic immunity
- Safety-related certifications: DIN EN IEC 60747-17 (VDE 0884-17), UL 1577 component recognition program, IEC 61010-1, IEC 62368-1
Applications
The ISO7241CDWR is suitable for various applications requiring high isolation and reliability, such as:
- Industrial control systems
- Medical devices
- Automotive systems
- Power supplies and DC-DC converters
- Communication and networking equipment
- Any system requiring isolation between high-voltage and low-voltage domains
Q & A
- What is the operating temperature range of the ISO7241CDWR?
The operating temperature range is –40°C to +125°C.
- What are the signaling rate options for the ISO7241CDWR?
The device supports 25 and 150 Mbps signaling rates.
- What is the isolation voltage of the ISO7241CDWR?
The isolation voltage is 2500 Vrms.
- Does the ISO7241CDWR have ESD protection?
Yes, it has 4 kV ESD protection.
- Can the ISO7241CDWR operate with different voltage supplies?
Yes, it can operate with 3.3V or 5V supplies on either side.
- What safety certifications does the ISO7241CDWR have?
The device has certifications such as DIN EN IEC 60747-17 (VDE 0884-17), UL 1577 component recognition program, IEC 61010-1, and IEC 62368-1.
- What is the typical jitter content at 150 Mbps for the ISO7241CDWR?
The typical jitter content at 150 Mbps is 1 ns.
- How many channels does the ISO7241CDWR have and in what configuration?
The device has four channels, with three channels in the same direction and one channel in the opposite direction.
- What is the common mode transient immunity (CMTI) of the ISO7241CDWR?
The CMTI is 25 kV/μs.
- What is the package type and pin count of the ISO7241CDWR?
The device comes in a SOIC (DW) package with 16 pins.
