General Description

The CA-IS3821 devices are high-performance dual-channel digital isolators with precise timing characteristics and low power consumption. The CA-IS3821 devices provide high electromagnetic immunity and low emissions while isolating CMOS digital I/Os. All device versions have Schmitt trigger input for high noise immunity. Each isolation channel consists of a transmitter and a receiver separated by a silicon dioxide (SiO2) insulation barrier. The CA-IS3821 device has one forward and one reverse-direction channel. All devices have a fail-safe mode option. If the input power or signal is lost, the default output is low for devices with the suffix L and high for devices with the suffix H. CA-IS3821 devices have high insulation capability to handle noise and surgeon a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. High CMTI ability promises the correct transmission of digital signals. The CA-IS382x devices are available in SOIC16 pin extra wide body. All products support insulation withstanding up to 5.7kVrms.