Isolated RS-485/RS-422Transceiver with integrated isolating power
Isolated RS-485/RS-422Transceiver with integrated isolating power

Product Details

General Description

The CA-IS309x family of devices is galvanically-isolated RS-485/RS-422 transceivers with built-in isolated DC-DC converter, that eliminates the need for a separate isolated power supply in space constrained isolated designs. All devices of this family have the logic input and output buffers separated by a silicon oxide (SiO2) insulation barrier that provides up to 5kVRMS (60s) of galvanic isolation and ±150kV/μs typical CMTI. Isolation improves data communication by breaking ground loops and reduces noise where there are large differences in ground potential between ports. An integrated DC-DC converter generates the 3.3V or 5V operating voltage for the cable-side.

The CA-IS309x family of devices is designed for high-speed multi-drop operation with high ESD protection of up to ±8kV HBM and ±12kV IEC 61000-4-2 Contact Discharge ESD protection on the bus pins. The receiver is 1/8-unit load, allowing up to 256 transceivers (loads) on a common bus. The CA-IS3090 and CA-IS3096 full-duplex transceivers are designed for bidirectional data communications on multipoint bus transmission lines simultaneously. The CA-IS3092 and CS-IS3098 provide half-duplex transceivers, the driver and receiver enable pins let any node at any given moment be configured in either transmit or receive mode which decreases cable requirements. See the Ordering Information for the different duplex, data rate and VISO level options.

The CA-IS309x series devices are available in wide-body 20-pin SOIC and 16-pin SOIC packages which are the industry standard isolated RS-485/RS-422 package, and operate over -40°C to +125°C temperature range.

High-Performance and Compliant with RS-485 EIA/TIA-485 StandardUp to 10Mbps(CA-IS3096/98 only) data rate
1/8 unit load enables up to 256 nodes on the bus
3V to 5.5V supply voltage range
Integrated DC-DC Converter for Cable-side Power3.3V and 5V output options for the CA-IS3092 and CA-IS3098 (VISO ≤ VCC)
High integration with internal transformer
Soft-start reduces input inrush current
Overload and short-circuit protection
Thermal shutdown
Integrated Protection for Robust Communication5kVRMS withstand isolation voltage for 60s (galvanic isolation)
±150kV/μs typical CMTI
High lifetime: >40 years
±8kV Human Body Model(HBM) ESD, ±12kV IEC 61000-4-2 Contact Discharge ESD protection on bus I/O, ±6kV HBM ESD protection on logic I/O
True fail-safe guarantees known receiver output state
Wide operating temperature range: –40°C to 125°C
Safety Regulatory Approvals(pending)7071VPK VIOTM and 849VPK VIORM per DIN VDE V0884-11:2017-01
5kVRMS isolation for 1 minute per UL 1577
IEC 60950-1, IEC 60601-1 and EN 61010-1 certifications
CQC, TUV, and CSA certifications
PackagesSOIC16-WB(W) , SOIC20-WB(W)

◎ Industrial Automation Equipment
◎ Grid infrastructure
◎ Solar inverter
◎ Motor drivers

Device information
Part NumberPackageBody Size (NOM)
CA-IS3090T SOIC20-WB(T) 12.80mm×7.50mm
CA-IS3096TSOIC20-WB(T) 12.80mm×7.50mm
Simplified Channel Structure

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