Overview
The ISO7240CDWR is a quad-channel digital isolator produced by Texas Instruments. This device is part of the ISO7240x family, which features multiple channel configurations and output-enable functions. The ISO7240CDWR has all four channels in the same direction and is designed to block high voltage, isolate grounds, and prevent noise currents from interfering with sensitive circuitry. It uses Texas Instruments’ silicon-dioxide (SiO2) isolation barrier to separate the logic-input and logic-output buffers. The device can be powered from 3.3V or 5V supplies on either side and operates over a temperature range of –40°C to +125°C.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (DW), 16 pins |
| Operating Temperature Range | –40°C to +125°C |
| Signaling Rate Options | 25 Mbps and 150 Mbps |
| Channel-to-Channel Output Skew | 1 ns Maximum |
| Pulse-Width Distortion (PWD) | 2 ns Maximum |
| Jitter Content | 1 ns Typ at 150 Mbps |
| ESD Protection | 4 kV |
| Supply Voltage | 3.3V or 5V |
| Safety Certifications | DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1 |
Key Features
- 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 (ISO7240CF)
- > 25-year life at rated working voltage
- 4-kV ESD protection
- Operates with 3.3V or 5V supplies
- High electromagnetic immunity
- –40°C to +125°C operating temperature range
- Safety-related certifications: DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1
Applications
- Industrial fieldbus
- Computer peripheral interface
- Servo control interface
- Data acquisition systems
Q & A
- What is the ISO7240CDWR used for?
The ISO7240CDWR is used as a quad-channel digital isolator to block high voltage, isolate grounds, and prevent noise currents from interfering with sensitive circuitry.
- What are the signaling rate options for the ISO7240CDWR?
The signaling rate options are 25 Mbps and 150 Mbps.
- What is the operating temperature range of the ISO7240CDWR?
The operating temperature range is –40°C to +125°C.
- What type of ESD protection does the ISO7240CDWR have?
The device has 4-kV ESD protection.
- Can the ISO7240CDWR operate with different supply voltages?
Yes, it can operate with 3.3V or 5V supplies on either side.
- What safety certifications does the ISO7240CDWR have?
The device has certifications such as DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1.
- What is the channel configuration of the ISO7240CDWR?
The ISO7240CDWR has all four channels in the same direction.
- Does the ISO7240CDWR have any input noise filtering?
Yes, devices with the C suffix (C option) have a noise-filter at the input to prevent transient pulses from being passed to the output.
- Can the ISO7240CDWR be used in data acquisition systems?
Yes, it is suitable for use in data acquisition systems.
- What is the typical jitter content of the ISO7240CDWR at 150 Mbps?
The typical jitter content is 1 ns at 150 Mbps.
