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Product Detailed Parameters
- Description：DGTL ISOLTR 5KV 4CH GP 20-SOIC
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR)
- Number of Channels：4
- Voltage - Isolation：5000Vrms
- Rise / Fall Time (Typ)：2.5ns, 2.5ns
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Grade：-
- Qualification：-
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Overview
The SI88443BD-ISR is a high-data-rate digital isolator from Skyworks Solutions, featuring four unidirectional channels and an integrated DC-DC converter. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage with a common-mode transient immunity of 40 kV/µs. The device supports data rates up to 100 Mb/s, operates within a supply voltage range of 3 V to 5.5 V, and exhibits propagation delays of 18 ns (high-to-low) and 23 ns (low-to-high). It is housed in a 20-SOIC package and functions across temperatures from -40°C to +125°C.
Feature Summary
- Integrates a high-efficiency isolated DC-DC converter for power delivery across the isolation barrier.
- Provides robust signal isolation via capacitive coupling with high common-mode transient immunity.
- Features a shutdown pin for low-power management and reduced standby current consumption.
Applications
- Industrial automation systems requiring galvanic isolation
- Medical equipment with safety isolation requirements
- Power electronics and motor control interfaces
Procurement Notes
Verify that the specific part number matches the required channel configuration and isolation voltage ratings for your design. Confirm compliance with RoHS standards and moisture sensitivity levels before integration. Check official documentation for lifecycle status updates, as this component may be subject to obsolescence notices or replacement recommendations.
Selection Notes
Select this component when a single-channel input requires three isolated outputs with independent power domains. Ensure the application benefits from the integrated DC-DC converter to simplify board layout. Verify that the 20-SOIC package dimensions fit the available PCB space and thermal constraints.
Part Context
This device belongs to the Si88443 family of high-performance digital isolators. It is designed to replace traditional optocouplers by offering superior speed, reliability, and smaller form factors. The series supports various channel configurations and isolation voltages for diverse interface needs.
Replacement Considerations
SI88443BC-ISR is listed as a similar alternative. Verify if the substitute maintains the same integrated DC-DC converter functionality and isolation specifications.
FAQ
Does the SI88443BD-ISR include an isolated power supply?
Yes, it features an integrated DC-DC converter that provides power to the output side.
What is the maximum data rate supported by this isolator?
The device supports data rates up to 100 Mb/s.
