IL485W-M 查看數據表（PDF） - RHOPOINT COMPONENTS

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IL485W-M

Isolated RS485 Interface With Handshake

RHOPOINT COMPONENTS 

IL485W

Isolated RS485 Interface With Handshake

Functional Diagram

DE

D

R

RE

OUT1

IL485W

ISODE

A

B

IN1

VID (A–B)

≥ 200 mV

≤−200 mV

−7<VI<12

≥ 1.5 V

≤−1.5 V

Open

DE RE ISODE R D Mode

LL

L

H X Receive

LL

L

L X Receive

XH

X

Z X Receive/Drive

HL

H

H H Drive

HL

H

L L Drive

LL

L

H X Indeterminate

H = High Level, L = Low Level

X = Irrelevant, Z = High Impedance

RE IN1 OUT1

L

L

L

L

H

H

H

X

Z

Features

• 2500 VRMS Isolation (1 min.)

• 25 ns Maximum Propagation Delay

• 35 Mbps Data Rate

• 1 ns Pulse Skew (typ.)

• Designed for Multi-point Transmission

on Long Bus Lines in Noisy Environments

• ±60 mA Driver Output Capability

• Thermal Shutdown Protection

• Meets or Exceeds ANSI RS-485 and ISO 8482:1987(E)

• −40°C to +85°C Temperature Range

• PROFIBUS International Component Recognition

• 16-Pin SOIC Package

• UL1577 and IEC 61010-2001 Approval

Applications

• Profibus/RS485 Systems

• Multiple Data Point Transmission

Description

The IL485W is a galvanically isolated, high-speed differential bus

transceiver, designed for bidirectional data communication on

balanced transmission lines. The devices use NVE’s patented*

IsoLoop spintronic Giant Magnetoresistance (GMR) technology. The

IL485W is the first isolated RS-485 interface in a standard 16-pin

SOIC package that meets the ANSI Standards EIA/TIA-422-B and

RS-485 and is compatible with 3.3V input supplies.

The IL485W has current limiting and thermal shutdown features to

protect against output short circuits and bus contention situations that

could cause excessive power dissipation.

With 1 ns pulse skew and 16 ns propagation delay, the IL485W is

ideal for PROFIBUS applications.

DE/ISODE and IN1/OUT1 allow isolated RTSAS and DTSAS

handshaking.

Isoloop is a registered trademark of NVE Corporation.

*U.S. Patent number 5,831,426; 6,300,617 and others.

REV. N

NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©2008 NVE Corporation

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