Chipanalog CA-IS3731CLW Digital Isolator

Chipanalog CA-IS3731CLW

The CA‐IS373xC devices provide high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS digital I/O. Each isolation channel has a logic input and output buffer separated by capacitive silicon dioxide (SiO2) insulation barrier, and each channel input integrated Schmitt trigger to provide excellent noise immunity. The CA‐IS3730C features 3 channels transferring digital signals in one direction and output enable for the B side is active‐high. The CA‐IS3731C device has two forward and one reverse‐direction channels, making it ideal for applications such as isolated SPI, RS‐485 communication. When the input is either not powered or is open‐circuit, the default output is low for devices with suffix L and high for devices with suffix H. The CA‐IS373xC devices are specified over the –40°C to +125°C operating temperature range and are available in 16‐pin wide‐body SOIC package.

Features

• Data rate
• DC to 40Mbps
• Robust isolation barrier
• High lifetime: >40 years
• Up to 5000VRMS isolation rating (wide‐body package)
• ±150kV/μs typical CMTI
• Wide supply range
• 3.0V to 5.5V
• Wide operating temperature range
• –40°C to 125°C
• No start‐up initialization required
• Default output High (CA‐IS373xCH) and Low (CA‐ IS373xCL) Options
• High electromagnetic immunity
• Low power consumption
• 2.0mA per channel at 1Mbps with VDD = 5.0V
• 3.5mA per channel at 40Mbps with VDD = 5.0V
• Best in class propagation delay and skew
• 22ns typical propagation delay
• 2.5ns propagation delay skew (chip ‐to‐chip)
• 1ns pulse width distortion

Applications

• Industrial Automation
• Motor Control
• Medical Systems
• Isolated Power Supplies
• Solar Inverters
• Isolated ADC, DAC

Device Information

Download Datasheet (PDF)