ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The IL3285 and IL3222 are galvanically isolated, differential bus transceivers designed for bidirectional data communication over balanced transmission lines. The devices use patented IsoLoop spintronic Giant Magnetoresistance (GMR) technology. The IL3285 delivers at least 1.5 V into a 54 Ω load, and the IL3222 at least 2 V into a 100 Ω load for excellent data integrity over long cables. These devices are also compatible with 3.3 V input supplies, allowing interface to standard microcontrollers without additional level shifting. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. Both the IL3285 and IL3222 have current limiting and thermal shutdown features to protect against output short circuits and bus contentions that may cause excessive power dissipation. The receivers also incorporate a “fail-safe if open” design, ensuring a logic high on R if the bus lines are disconnected or “floating.” Receiver input resistance of 96 kΩ is eight times the RS - 485 “Unit Load” (UL) minimum of 12 kΩ. Thus these products are known as “one - eighth UL” transceivers. There can be up to 256 on a network while still complying with the RS - 485 loading specification.

Features

• 3 V to 5 V power supplies
• 5 Mbps data rate
• 1/8 unit load
• 15 kV bus ESD protection
• 20 kV/μs typical common mode rejection
• No carrier or clock for low EMI emissions and susceptibility
• -40 °C to +85 °C temperature range
• Thermal shutdown protection
• 2500 VRMS isolation
• IEC 60747 - 17 (VDE 0884 - 17):2021 - 10; UL 1577
• 0.15" or 0.3" True 8 mm 16 - pin SOIC packages

Applications

• High node - count networks
• Security networks
• Building environmental controls
• Industrial control networks
• Gaming systems