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Product Attributes

Introduction

The CA-IS2092A series are electrically isolated RS-485 transceivers with an integrated isolated DC-DC converter, eliminating the need for a separate isolated power supply in space-constrained isolation designs. The transceiver's logic input and output buffers are separated by a silicon dioxide (SiO2) insulation barrier, providing electrical isolation up to 2.5kV RMS (60 seconds) and a typical common-mode transient immunity (CMTI) of ±150kV/μs. The isolation improves data communication by breaking ground loops and reduces noise where large ground potential differences exist between ports. The integrated DC-DC converter generates a 3.3V or 5V operating voltage for the cable side. The CA-IS2092A is designed for multipoint operation, featuring high ESD protection up to ±20kV HBM on the bus pins. The receiver presents 1/8 unit load, allowing up to 256 transceivers (loads) to be connected on a common bus. The CA-IS2092A provides half-duplex transceiver functionality. The device offers a slow slew rate to minimize EMI and reflections, enabling error-free data transmission up to 0.5Mbps. A separate logic supply input allows fully compatible logic from 2.5V to 5.5V on the logic input lines. The CA-IS2092A is available in an LGA16 package and operates over a temperature range of -40°C to +125°C.

Features

• High performance, compliant with RS-485 EIA/TIA-485 standard, data rate up to 0.5Mbps
• 1/8 unit load, allowing up to 256 nodes on the bus
• 3.0V to 5.5V DC-DC supply voltage range (VDDP)
• 2.5V to 5.5V RS-485 power input (VDDL)
• Integrated DC-DC converter for cable-side power supply with 3.3V and 5V output options
• Highly integrated internal transformer
• Soft-start reduces input inrush current
• Overload and short-circuit protection
• Thermal shutdown
• 2.5kV RMS / 60-second withstand isolation voltage for digital signals (galvanic isolation)
• Typical CMTI of ±150kV/μs
• Long service life: >40 years
• Bus I/O with ±20kV HBM ESD protection
• True failsafe ensures known receiver output state
• Driver current limiting and thermal shutdown
• Wide operating temperature range: –40°C to 125°C
• LGA16 package
• Safety certifications: VDE certification compliant with DIN EN IEC60747-17 (VDE 0884-17):2021-10 (pending), UL certification compliant with UL1577, TUV certification compliant with EN61010-1:2010+A1

Applications

• Industrial automation equipment
• Solar inverters
• Motor drives
• Building automation