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CA-IS3721LW

Ordering Code CA-IS3721LW Category

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Standard Digital Isolator

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CA-IS3721LW

Order Code CA-IS3721LW Category

Description

CA-IS3721LW

Dual Channel Standard Digital Isolators

The CA‐IS372x devices are high‐performance dual ‐ channel digital isolators with up to 3.75kVRMS (narrow‐ body package) and 5kVRMS (wide‐body package) isolation rating and ultra‐fast data rate. The CA‐IS372x 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‐IS3720 features two channels transferring digital signals in one direction for applications such as isolated digital I/O. The CA‐IS3721/CA‐IS3722 devices have 2 channels with 1 channel in each direction, making them ideal for isolating the Tx and Rx lines of a transceiver, such as RS485, CAN etc. 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‐IS372x family are specified over the ‐40°C to +125°C operating temperature range and are available in 8‐pin SOIC narrow body package, 8‐pin SOIC wide body package and 16‐pin SOIC wide body package.

Features

  • Data rate – DC to 150Mbps
  • Robust isolation barrier
    • High lifetime: >40 years
    • Up to 5000 VRMS isolation rating (Wide body packages)
    • ±150 kV/μs typical CMTI
  • Wide supply range – 2.5V to 5.5V
  • Wide operating temperature range – -40°C to 125°C
  • No start-up initialization required
  • Default output High (CA-IS372xH) and Low (CA-IS372xL) Options
  • High electromagnetic immunity
  • Low power consumption
    • 1.5mA per channel at 1Mbps with VDD = 5.0V
    • 6.6mA per channel at 100Mbps with VDD = 5.0V
  • Best in class propagation delay and skew
    • 12ns typical propagation delay
    • 2ns propagation delay skew (chip -to-chip)
    • 1ns pulse width distortion
    • 5ns minimum pulse width
  • Schmitt trigger inputs
  • Package options
    • Narrow-body SOIC8(S) package
    • Wide-body SOIC8(G) package
    • Wide-body SOIC16(W) package
  • Safety regulatory approvals
    • VDE 0884-11 isolation certification
    • UL according to UL1577
    • IEC 62368-1, IEC 61010-1, GB 4943.1-2011 and GB 8898-2011 certifications

Applications

  • Industrial Automation
  • Motor Control
  • Medical Systems
  • Isolated Power Supplies
  • Solar Inverters
  • Isolated RS485, CAN, RS232 etc.