IL485W 查看數據表（PDF） - Unspecified
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IL485W Datasheet PDF : 4 Pages
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Isolated RS485 Interface with
Handshake
IL485W
Function Table
The IL485W is a
galvanically isolated, high-
VID
speed differential bus
transceiver, designed for
bi-directional
data
(A-B)
≥0.2V
DE RE ISODE R
L
L
L
H
communication
on
balanced transmission
≤-0.2V
L
L
L
L
lines. The IL485W uses
patented
IsoLoop®
-7<VID<12 X
H
X
Z
technology and is the first
isolated RS-485 interface
available in a standard 16
≥ 1.5
H
L
H
H
pin SOIC package, which
meets the ANSI Standards
EIA/TIA-422-B
and
≤-1.5
Open
H
L
H
L
L
L
L
H
RS485.
H = High Level
The IL485W has current limiting and thermal shutdown features to
protect against output short circuits and bus contention situations where
these may cause excessive power dissipation.
L = Low Level
X = Irrelevant
With a 1 nsec pulse skew and 16 nsec propagation delay, the IL485W is
ideal for PROFIBUS applications. Use of DE/ISODE and IN1/OUT1
allows the IL485W to perform the handshaking operations of RTSAS
and DTSAS of PROFIBUS.
Z = High Impedance
• 2500 Vrms Isolation (1 min)
• 25 ns Maximum Propagation Delay
• 35 MBaud 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
• 16 Pin SOIC Package
• PROFIBUS International Component Recognition
• UL1577 Approval (pending)
• IEC 61010-1 Approval (pending)
Applications
• PROFIBUS/RS485
• RS-485 Systems
• Multiple Data Point Transmission
PROFIBUS Fault Interrogation
D MODE
X Receive
X Receive
X Receive/
Drive
H Drive
L Drive
X Receive
Dimensions in mm
Functional Diagram (IL485W)
Rhopoint Components Ltd
Tel: +44 (0) 870 608 1188 Fax: +44 (0) 870 241 2255
Germany: +49 (0) 692 199 8606 Fax: +49 (0) 692 199 8595
Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com
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