5V, Half Duplex, 20Mbps, ±15kV ESD Protected, RS-485/RS-422 Transceiver
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Overview
Description
The Intersil ISL4485E is a high speed, BiCMOS 5V powered, single transceiver that meets both the RS-485 and RS-422 standards for balanced communication. Each driver output/receiver input is protected against ±15kV ESD strikes, without latch-up. Unlike competitive devices, this Intersil device is specified for 10% tolerance supplies (4. 5V to 5. 5V). The excellent differential output voltage coupled with high drive-current output stages allow 20Mbps operation over twisted pair networks up to 450 feet in length. The 25kΩ receiver input resistance presents a single unit load to the RS-485 bus, allowing up to 32 transceivers on the network. Receiver (Rx) inputs feature a fail-safe if open design, which ensures a logic high Rx output if Rx inputs are floating. Driver (Tx) outputs are short circuit protected, even for voltages exceeding the power supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to prevent damage if power dissipation becomes excessive. The half duplex configuration multiplexes the Rx inputs and Tx outputs to allow transceivers with Rx and Tx disable functions in 8 lead packages.
Features
- Pb-Free Available (RoHS Compliant)
- High Data Rates up to 20Mbps
- RS-485 I/O Pin ESD Protection ±15kV HBM
- Class 3 ESD Level on all Other Pins >7kV HBM
- Operates from a Single +5V Supply (10% Tolerance)
- 1 Unit Load Allows up to 32 Devices on the Bus
- Low Quiescent Current 700µA
- -7V to +12V Common Mode Input Voltage Range
- Three State Rx and Tx Outputs
- 30ns Propagation Delays, 2ns Skew
- Current Limiting and Thermal Shutdown for driver Overload Protection
Applications
Applications
- SCSI "Fast 20" Drivers and Receivers
- Data Loggers
- Security Networks
- Building Environmental Control Systems
- Industrial/Process Control Networks
- Level Translators
Documentation
| Document title | Document type
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Date Date | |
|---|---|---|---|
| PDF 729 KB | Datasheet | ||
| PDF 365 KB | Application Note | ||
| PDF 207 KB | Application Note | ||
| PDF 474 KB | Application Note | ||
| PDF 366 KB | Application Note | ||
| PDF 178 KB | Application Note | ||
| PDF 513 KB | Application Note | ||
| PDF 826 KB | Application Note | ||
| PDF 443 KB | Application Note | ||
| PDF 582 KB | Application Note | ||
| PDF 440 KB | Application Note | ||
| PDF 338 KB | Application Note | ||
| PDF 365 KB | Application Note | ||
| PDF 375 KB | Application Note | ||
| PDF 4.91 MB 日本語 | Brochure | ||
| PDF 2.95 MB | Brochure | ||
| PDF 156 KB | Other | ||
| PDF 253 KB | Other | ||
| PDF 254 KB | Other | ||
| PDF 106 KB | Product Advisory | ||
| PDF 266 KB | Product Change Notice | ||
| PDF 398 KB | Product Change Notice | ||
| PDF 108 KB | Product Change Notice | ||
| PDF 438 KB | Report | ||
| PDF 266 KB 简体中文 | Technical Brief | ||
| PDF 188 KB | Technical Brief | ||
| PDF 405 KB | Training | ||
| PDF 239 KB | Training | ||
| PDF 920 KB 简体中文 | White Paper | ||
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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
ISL4485EIBZ Last Time Buy Samples Available |
SOICN | Tube | 1960 | Get Samples, |
| SOICN | Reel | 2500 |
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