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The CA-IS374x devices are high-performance four-channel, unidirectional digital isolators with up to 3.75kVRMS (narrow-body package) or 5kVRMS (wide-body package) isolation rating and ultra-fast data rate. The CA-IS374x devices offer high electromagnetic immunity and low emissions at low power consumption, while isolating different ground domains and block high-voltage/high-current transients from sensitive or human interface circuitry. Each isolation channel has a logic input and output buffer separated by capacitive silicon dioxide (SiO2) insulation barrier, the integrated Schmitt trigger on each input provide excellent noise immunity.
The CA-IS374x family offers all possible unidirectional channel configurations to accommodate any 4-channel design, including SPI, RS-485, and digital I/O applications. The CA-IS3740 features 4 channels transferring digital signals in one direction and output enable for the B side is active-high. The CA-IS3741 device has three forward and one reverse-direction channels, making it ideal for applications such as isolated SPI, RS-485 communication. The CA-IS3742 provides further design flexibility with two channels in each direction for isolated RS-232 or other applications. Both CA-IS3741 and CA-IS3742 come with individual enable control pins for each side of the isolator which can be used to put the outputs in high impedance for multi-master driving applications to reduce power consumption.
The CA-IS374x family features default outputs. 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, see the Ordering Information for suffixes associated with each option.
The CA-IS374x family devices are specified over the -40°C to +125°C operating temperature range and are available in 16-pin SOIC, 16-pin SSOP narrow body packages and 16-pin SOIC wide body package.
◎ Industrial Automation
◎ Motor Control
◎ Medical Systems
◎ Isolated Power Supplies
◎ Solar Inverters
◎ Isolated SPI, RS485, CAN etc.
| Part Number | Package | Package Size (NOM) |
|---|---|---|
| CA-IS3740 CA-IS3741 CA-IS3742 | SOIC16-NB (N) | 9.90 mm × 3.90 mm |
| CA-IS3740 CA-IS3741 CA-IS3742 | SOIC16-WB(W) | 10.30 mm × 7.50 mm |
| CA-IS3740 CA-IS3741 CA-IS3742 | SSOP16-NB(B) | 4.90 mm × 3.90 mm |
GNDA and GNDB are the isolated grounds for A side and B side respectively.
The CA-IS374x devices are high-performance four-channel, unidirectional digital isolators with up to 3.75kVRMS (narrow-body package) or 5kVRMS (wide-body package) isolation rating and ultra-fast data rate. The CA-IS374x devices offer high electromagnetic immunity and low emissions at low power consumption, while isolating different ground domains and block high-voltage/high-current transients from sensitive or human interface circuitry. Each isolation channel has a logic input and output buffer separated by capacitive silicon dioxide (SiO2) insulation barrier, the integrated Schmitt trigger on each input provide excellent noise immunity.
The CA-IS374x family offers all possible unidirectional channel configurations to accommodate any 4-channel design, including SPI, RS-485, and digital I/O applications. The CA-IS3740 features 4 channels transferring digital signals in one direction and output enable for the B side is active-high. The CA-IS3741 device has three forward and one reverse-direction channels, making it ideal for applications such as isolated SPI, RS-485 communication. The CA-IS3742 provides further design flexibility with two channels in each direction for isolated RS-232 or other applications. Both CA-IS3741 and CA-IS3742 come with individual enable control pins for each side of the isolator which can be used to put the outputs in high impedance for multi-master driving applications to reduce power consumption.
The CA-IS374x family features default outputs. 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, see the Ordering Information for suffixes associated with each option.
The CA-IS374x family devices are specified over the -40°C to +125°C operating temperature range and are available in 16-pin SOIC, 16-pin SSOP narrow body packages and 16-pin SOIC wide body package.
◎ Industrial Automation
◎ Motor Control
◎ Medical Systems
◎ Isolated Power Supplies
◎ Solar Inverters
◎ Isolated SPI, RS485, CAN etc.
| Part Number | Package | Package Size (NOM) |
|---|---|---|
| CA-IS3740 CA-IS3741 CA-IS3742 | SOIC16-NB (N) | 9.90 mm × 3.90 mm |
| CA-IS3740 CA-IS3741 CA-IS3742 | SOIC16-WB(W) | 10.30 mm × 7.50 mm |
| CA-IS3740 CA-IS3741 CA-IS3742 | SSOP16-NB(B) | 4.90 mm × 3.90 mm |
GNDA and GNDB are the isolated grounds for A side and B side respectively.
