Fault Protected, Extended Common Mode Range, RS-485/RS-422 Transceivers
Jump to Page Section:
Overview
Description
The ISL31470E, ISL31472E, ISL31475E, and ISL31478E are fault protected, extended common-mode range differential transceivers that exceed the RS-485 and RS-422 standards for balanced communication. The RS-485 bus pins (driver outputs and receiver inputs) are protected against overvoltages up to ±60V. Additionally, these transceivers operate in environments with common-mode voltages up to ±15V (exceeds the RS-485 requirement), making this RS-485 family one of the more robust on the market. Transmitters deliver an exceptional 2. 5V (typical) differential output voltage into the RS-485 specified 54Ω load. This yields better noise immunity than standard RS-485 ICs, or allows up to six 120Ω terminations in star topologies. The receiver (Rx) inputs feature a Full Fail-Safe design that ensures a logic high Rx output if the Rx inputs are floating, shorted, or on a terminated but undriven (idle) bus. The Rx outputs feature high drive levels - typically 15mA at VOL = 1V (to ease the design of opto-coupled isolated interfaces). Half duplex (Rx inputs and Tx outputs multiplexed together) and full duplex pinouts are available. For an RS-485 family with a ±25V extended common-mode range, see the ISL31490E datasheet.
Features
- Fault protected RS-485 bus pins: up to ±60V
- Extended common-mode range: ±15V larger than required for RS-485
- 1/4 unit load for up to 128 devices on the bus
- High transient overvoltage tolerance: ±80V
- Full fail-safe (open, short, terminated) RS-485 receivers
- High Rx IOL for opto-couplers in isolated designs
- Hot plug circuitry - Tx and Rx outputs remain three-state during power-up/power-down
- Choice of RS-485 data rates: 250kbps to 15Mbps
- Low quiescent supply current: 2.3mA
- Ultra low shutdown supply current: 10µA
- Pb-free (RoHS compliant)
Applications
Applications
- Utility Meters/Automated Meter Reading Systems
- High Node Count Systems
- PROFIBUS™ and Field Bus Networks, and Factory Automation
- Security Camera Networks
- Building Lighting and Environmental Control Systems
- Industrial/Process Control Networks
Documentation
| Title | Type | Date | |
|---|---|---|---|
PDF1.40 MB
|
Datasheet
|
||
PDF365 KB
|
Application Note
|
||
PDF207 KB
|
Application Note
|
||
PDF474 KB
|
Application Note
|
||
PDF366 KB
|
Application Note
|
||
PDF178 KB
|
Application Note
|
||
PDF513 KB
|
Application Note
|
||
PDF826 KB
|
Application Note
|
||
PDF443 KB
|
Application Note
|
||
PDF582 KB
|
Application Note
|
||
PDF440 KB
|
Application Note
|
||
PDF338 KB
|
Application Note
|
||
PDF365 KB
|
Application Note
|
||
PDF375 KB
|
Application Note
|
||
Brochure
|
|||
PDF2.95 MB
|
Brochure
|
||
PDF156 KB
|
Other
|
||
PDF253 KB
|
Other
|
||
PDF254 KB
|
Other
|
||
PDF208 KB
|
Price Increase Notice
|
||
PDF266 KB
|
Product Change Notice
|
||
PDF152 KB
|
Product Change Notice
|
||
PDF438 KB
|
Report
|
||
Technical Brief
|
|||
PDF188 KB
|
Technical Brief
|
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
ISL31472EIBZ Active Samples Available |
SOICN | Tube | 1960 | Get Samples, |
| SOICN | Reel | 2500 |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product