Overview
The ISO7240CDWRG4 is a high-speed, 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. It is designed to provide electrical isolation between input and output logic signals, making it suitable for applications requiring high voltage isolation and noise immunity.
The device uses Texas Instruments' silicon-dioxide (SiO2) isolation barrier to separate the logic-input and logic-output buffers. This isolation helps block high voltages, isolate grounds, and prevent noise currents from interfering with sensitive circuitry. The ISO7240CDWRG4 operates with 3.3-V or 5-V supplies and is characterized for operation over a wide ambient temperature range of –40°C to +125°C.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC (16-pin) |
| Package Size | 10.30 mm × 7.50 mm |
| Number of Channels | 4 channels (all in the same direction) |
| Supply Voltage | 3.3-V or 5-V |
| Operating Temperature Range | –40°C to +125°C |
| Isolation Voltage | 2.5 kVRMS for 1 minute per UL 1577 |
| ESD Protection | 4-kV |
| Channel-to-Channel Output Skew | 1 ns Maximum |
| Pulse-Width Distortion (PWD) | 2 ns Maximum |
| Jitter Content | 1 ns Typ at 150 Mbps |
| Safety Certifications | VDE 4000 VPK Basic Insulation, CSA Component Acceptance Notice #5A, IEC 60950-1 |
Key Features
- Selectable default output (high or low failsafe-output function)
- Input disable function to prevent data from being passed across the isolation barrier
- High electromagnetic immunity
- Low channel-to-channel output skew and low pulse-width distortion
- Low jitter content at high data rates (1 ns typ at 150 Mbps)
- 25-year life at rated working voltage
- 5-V tolerant signal input pins regardless of the voltage supply level
Applications
- Industrial Fieldbus
- Computer Peripheral Interface
- Servo Control Interface
- Data Acquisition
Q & A
- What is the ISO7240CDWRG4 used for?
The ISO7240CDWRG4 is used for electrical isolation between input and output logic signals, particularly in applications requiring high voltage isolation and noise immunity.
- What are the operating supply voltages for the ISO7240CDWRG4?
The device operates with 3.3-V or 5-V supplies.
- What is the operating temperature range of the ISO7240CDWRG4?
The device operates over a temperature range of –40°C to +125°C.
- What is the isolation voltage rating of the ISO7240CDWRG4?
The device has a 2.5 kVRMS isolation voltage rating for 1 minute per UL 1577.
- Does the ISO7240CDWRG4 have ESD protection?
Yes, the device has 4-kV ESD protection.
- What are the key safety certifications for the ISO7240CDWRG4?
The device has VDE 4000 VPK Basic Insulation, CSA Component Acceptance Notice #5A, and IEC 60950-1 certifications.
- Can the ISO7240CDWRG4 be used in high-speed applications?
Yes, the device is designed for high-speed applications with low jitter content (1 ns typ at 150 Mbps) and low pulse-width distortion.
- How many channels does the ISO7240CDWRG4 have?
The device has four channels, all in the same direction.
- Does the ISO7240CDWRG4 have an input disable function?
Yes, the device has an input disable function to prevent data from being passed across the isolation barrier.
- Is the ISO7240CDWRG4 suitable for industrial applications?
Yes, it is suitable for industrial fieldbus, servo control interfaces, and other industrial applications.
