Overview
The ISO7242CDWR from Texas Instruments is a quad-channel digital isolator designed to provide high-speed data transfer while ensuring electrical isolation between different parts of a system. This device is part of the ISO7242x family, which features two channels in each direction, making it versatile for various applications. The ISO7242CDWR uses Texas Instruments’ silicon-dioxide (SiO2) isolation barrier to block high voltage, isolate grounds, and prevent noise currents from interfering with sensitive circuitry. It is particularly useful in conjunction with isolated power supplies to enhance system reliability and safety.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage - Min | 3.15 | V |
| Supply Voltage - Max | 5.5 | V |
| Isolation Voltage | 2500 | Vrms |
| Isolation Type | Capacitive Coupling | - |
| Signaling Rate Options | 25 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 | - |
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)
- More than 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
- Factory Automation: Modbus, Profibus™, DeviceNet™ data buses
- Computer Peripheral Interface
- Servo Control Interface
- Data Acquisition
Q & A
- What is the primary function of the ISO7242CDWR?
The ISO7242CDWR is a quad-channel digital isolator designed to provide electrical isolation and high-speed data transfer between different parts of a system.
- What are the signaling rate options for the ISO7242CDWR?
The device supports 25 and 150 Mbps signaling rates.
- What is the operating temperature range of the ISO7242CDWR?
The device operates over a temperature range of –40°C to +125°C.
- What type of isolation does the ISO7242CDWR use?
The device uses capacitive coupling for isolation.
- What is the maximum isolation voltage of the ISO7242CDWR?
The maximum isolation voltage is 2500 Vrms.
- Does the ISO7242CDWR have ESD protection?
Yes, it has 4-kV ESD protection.
- What are the supply voltage options for the ISO7242CDWR?
The device can operate with 3.3V or 5V supplies on either side.
- What safety certifications does the ISO7242CDWR have?
The device has certifications such as DIN EN IEC 60747-17, UL 1577, IEC 61010-1, and IEC 62368-1.
- What are some common applications for the ISO7242CDWR?
Common applications include factory automation, computer peripheral interfaces, servo control interfaces, and data acquisition.
- Is the ISO7242CDWR still in production?
No, the ISO7242CDWR is no longer in production.
