CA-IF4820HD
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RS-485/RS-422 Transceiver
The CA-IF48xx family of devices are low-power transceivers for RS-485/RS-422 communications in harsh environments. All devices have ±30V fault protection for overvoltage conditions on the bus lines that ensure robust protection for the communication interface. They also feature ±15V wide common-mode range (CMR), this feature was specifically designed for systems where there is a large common-mode voltage present due to either nearby electrically noisy equipment or large ground differences due to different earth grounds or long distance transmission. The bus pins of these devices are protected against ±15kV (for the full-duplex transceivers) and ±30kV (for the half-duplex transceivers) electro-static discharge (ESD) shocks, eliminating the need for additional system level protection components. The CA-IF48xx family of devices contains one driver(TX) and one receiver(RX), operates over the +3V to +5.5V supply range, making these devices convenient for designers to use one part with either +3.3V or +5V supply systems. The CA-IF48xxHS/HM/HD devices provide half duplex transceivers, and the CA-IF48xxFS/FM/FD devices provide full-duplex transceivers. The CA-IF4820 and CA-IF4850 can transmit and receive at data rates up to 20Mbps and up to 50Mbps respectively, while the CA-IF4805 is specified for data rates up to 500kbps. These devices also include fail-safe circuitry, guaranteeing a logic high receiver output when the receiver inputs are shorted or open. All devices are specified over the -40°C to +125°C wide operating temperature range and are available in small 8- pin MSOP, 8-pin DFN packages for space constrained applications and 8-pin SOIC for drop-in compatibility.
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![CA-IF4820HD.png](/Public/Uploads/uploadfile/images/20240605/CAIF4820HD.png)
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Features
High-Performance and Compliant with RS-485 EIA/TIA-485 Standard
Low EMI 500kbps Data Rate (CA-IF4805) and up to 50Mbps (CA-IF4850), 20Mbps (CA-IF4820) High-Speed Data Rates
1/8 Unit Load Enables up to 256 Nodes on the Same BusIntegrated Protection for Robust Communication
±30V Fault Protection Range on Driver Outputs/Receiver Inputs
±15V Common-Mode Voltage Range
±15kV Human Body Model ESD Protection for the Full-duplex Devices (CA-IF48xxFS/FM/FD)
±30kV Human Body Model ESD Protection for the Half-duplex Devices (CA-IF48xxHS/HM/HD)
Short-Circuit Protection
Thermal Shutdown
True Fail-Safe Guarantees Known Receiver Output StateLow Power
960µA (max.) @ Receive Mode
Shutdown Current < 5µA3V to 5.5V Supply Voltage Range
Wide Operating Temperature Range
–40°C to 125°C
8 pin SOIC
8 pin MSOP and 8 pin DFN Packages
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Applications
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Motor Drive
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Factory Automation & Control
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Grid Infrastructure
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Home and Building Automation
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Video Surveillance
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Process Control
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Telecommunication Equipment
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Device Information
Part number Package Package size (NOM) CA-IF48xxxD DFN8 3mm*3mm CA-IF48xxxM MSOP8 CA-IF48xxxS SOIC8 3.9mm*4.9mm -
Simplified Functional Diagram
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Technical Documentation
Category
Title
Last Updated
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Title: Datasheet
Last Updated: Nov 21,2023
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