IL3485-3E NVE, IL3485-3E Datasheet

TXRX ISO BUS 20MBPS RS485 16SOIC

IL3485-3E

Manufacturer Part Number
IL3485-3E
Description
TXRX ISO BUS 20MBPS RS485 16SOIC
Manufacturer
NVE
Series
IsoLoop®r
Datasheet

Specifications of IL3485-3E

Inputs - Side 1/side 2
RS-485
Number Of Channels
1
Isolation Rating
2500Vrms
Voltage - Supply
4.25V, 5V
Data Rate
20Mbps
Propagation Delay
55ns
Output Type
Logic
Package / Case
16-SOIC (3.9mm Width)
Operating Temperature
-40°C ~ 85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
390-1128-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IL3485-3E
Manufacturer:
ADI
Quantity:
62
Part Number:
IL3485-3E
Manufacturer:
NVE
Quantity:
20 000
Functional Diagrams
IL3485 Truth Table
Z = High Impedance
Selection Table
IsoLoop
*U.S. Patent number 5,831,426; 6,300,617 and others.
IL3422 Receiver
IL3485
IL3422
≤−200 mV
≤−200 mV
≥ 200 mV
≥ 200 mV
Model
RE
NVE Corporation
H
L
L
L
V
Open
(A–B)
X
®
is a registered trademark of NVE Corporation.
High Speed RS-485 and RS-422 Isolated Transceivers
Full/Half
R
H
H
Z
L
V
V
Duplex
COIL1
COIL1
half
full
DE
RE
DE
RE
DE
D
D
R
R
H
H
L
L
X
L
≤−200 mV
11409 Valley View Road, Eden Prairie, MN 55344-3617
≥ 200 mV
IL3485
IL3422
V
Open
X = Irrelevant
(A–B)
X
Allowed on Bus
No. of Devices
D
H
X
X
X
X
L
32
32
R
H
H
Z
H
L
L
IL3422 Driver
DE
L
H
H
RE
H
L
L
L
L
L
Data Rate
Mbps
D
X
H
L
20
20
V
A
B
Y
Z
V
A
B
Receive
Receive
Receive
COIL2
COIL2
Mode
Drive
Drive
X
≤−200 mV
≥ 200 mV
V
(Y–Z)
Fail-Safe
Z
yes
yes
Phone: (952) 829-9217
Features
Applications
Description
The IL3485 and IL3422 are galvanically isolated, differential
bus transceivers designed for bidirectional data
communication over balanced transmission lines. The devices
use NVE’s patented* IsoLoop spintronic Giant
Magnetoresistance (GMR) technology. The IL3485 delivers at
least 1.5 V into a 54 Ω load, and the IL3422 at least 2 V into a
100 Ω load, allowing 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.
Both the IL3485 and IL3422 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.”
A capacitor (C
current limit resistor to ensure the full specified performance.
3.3 V / 5 V Input Supply Compatible
20 Mbps Data Rate
Supports Up to 32 Nodes
±15 kV ESD Protection
2500 VRMS Isolation (1 minute)
20 kV/µs Typical Common Mode Rejection
15 kV bus ESD protection
Low EMC Footprint
Thermal Shutdown Protection
−40°C to +85°C Temperature Range
UL1577 and IEC 61010-2001 Approved
0.15" or 0.3" 16-pin SOIC Packages
Data Loggers
P.O.S. Systems
Security Networks
Building Environmental Controls
Industrial Control Networks
Factory Automation
Fax: (952) 829-9189
Boost
; see page 7) must be placed across the
IL3485/IL3422
www.IsoLoop.com
©NVE Corporation
REV. J

Related parts for IL3485-3E

IL3485-3E Summary of contents

Page 1

... These devices are also compatible with 3.3 V input supplies, allowing interface to standard microcontrollers without additional level shifting (Y– Both the IL3485 and IL3422 have current limiting and ≥ 200 thermal shutdown features to protect against output short ≤−200 circuits and bus contentions that may cause excessive power dissipation. The receivers also incorporate a “ ...

Page 2

... Barrier Impedance Leakage Current Safety Approvals IEC61010-2001 TUV Certificate Numbers: N1502812, N1502812-101 Classification: Reinforced Insulation Models IL3422E, IL3485E, IL3422-3E, IL3485-3E UL 1577 Rated 2500 V for 1 minute RMS Component Recognition Program File Number: E207481 Soldering Profile Per JEDEC J-STD-020C, MSL=2 Electrostatic Discharge Sensitivity This product has been tested for electrostatic sensitivity to the limits stated in the specifications ...

Page 3

... IL3485-3 Pin Connections (0.15" SOIC Package Input power supply DD1 2 GND Ground return for Output data from bus 3 Read enable high high impedance) DE Drive enable Coils for DE and D (connect to V COIL1 7 D Data input to bus internal connection 9 GND Ground return for V ...

Page 4

... IL3485 Pin Connections (0.3" SOIC Package Input power supply DD1 2 GND Ground return for Output data from bus 3 Read enable high high impedance) DE Drive enable Coils for DE and D (connect to V COIL1 7 D Data input to bus V ground return for 0.3" package ...

Page 5

... V, C DD1 Symbol Min. Typ (OD ( (OD PZH t 25 PZL t 25 PHZ t 25 PLZ t (LIM) SK |CM |,| Phone: (952) 829-9217 IL3485/IL3422 Max. Units Test Conditions T = 25°C Ω||nH AMB Ω/° 100 Ω Ω Ω or 100 Ω ±0 Ω or 100 Ω 3 ...

Page 6

... DD1 A with a 54 Ω load is either ½ 1.5 V, whichever is greater. OD2 OD1 and V , respectively, that occur when the input is changed from one logic state to the other Phone: (952) 829-9217 IL3485/IL3422 Max. Units Test Conditions T = 25°C Ω||nH AMB Ω/°C ...

Page 7

... Note however that power dissipation in the input coil increases in 210 5000 5000 proportion to the capacitor value. 7 Phone: (952) 829-9217 IL3485/IL3422 The output switches to the low Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation pins for DD Output ...

Page 8

... Approximate Immunity ±20 Gauss ±70 Gauss ±250 Gauss 8 Phone: (952) 829-9217 IL3485/IL3422 Immunity Description A DC current flowing in a conductor 1 cm from the device could cause disturbance A DC current flowing in a conductor 1 cm from the device could cause disturbance A DC current of 200 A flowing in a conductor ...

Page 9

... Cable Length (feet) 100 40 Figure 4. Cable Length vs. Data Rate (30% jitter). NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 100 1K 10K 100K 1M Data Rate (bps) 9 Phone: (952) 829-9217 IL3485/IL3422 10M Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation ...

Page 10

... In RS-422 systems only the receiver end should be terminated. Unterminated Proper termination is imperative when using IL3485 and IL3422 to minimize reflections. Unterminated lines are only suitable for very low data rates and very short cable runs, otherwise line reflections cause problems. Parallel terminations are the most popular. ...

Page 11

... Unit Loads (12 kΩ each), without external fail Nominal V Fail-Safe A-B (inactive) Operation? Loading 238 254 mV 247 mV 11 Phone: (952) 829-9217 IL3485/IL3422 ) at one end of the bus can FS-EXT Yes No Yes Yes Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation ; see FS-INT ...

Page 12

... NOTE: Pin spacing is a BASIC dimension; tolerances do not accumulate 12 Phone: (952) 829-9217 IL3485/IL3422 NOM 0.054 (1.4) 0.072 (1.8) 0.004 (0.1) 0.012 (0.3) 0.287 (7.29) 0.300 (7.62) NOM 0.016 (0.4) 0.050 (1.3) ...

Page 13

... SOIC Channel Configuration 22 = RS-422 85 = RS-485 Base Part Number 34 = Passive-In, 20 Mbps Transceiver Product Family IL = Isolators 13 Phone: (952) 829-9217 Fax: (952) 829-9189 IL3485/IL3422 Valid Part Numbers IL3485E IL3485E TR13 IL3485-3E IL3485-3E TR13 IL3422E IL3422E TR13 IL3422-3E IL3422-3E TR13 RoHS COMPLIANT www.IsoLoop.com ©NVE Corporation ...

Page 14

... Change • ISB-DS-001-IL3485/22-G Changes • • ISB-DS-001-IL3485/22-F Changes • ISB-DS-001-IL3485/22-E Changes • ISB-DS-001-IL3485/22-D Changes • ISB-DS-001-IL3485/22-C Changes • • • ISB-DS-001-IL3485/22-B Changes ISB-DS-001-IL3485/22-A Initial Release NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Changes to current-limiting resistor values (pp. 7 and 10). ...

Page 15

... Corporation does not authorize, nor warrant, any NVE Corporation product for use in life support devices or systems or other critical applications, without the express written approval of the President of NVE Corporation. Specifications are subject to change without notice. ISB-DS-001-IL3485/22-J August 2009 NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 IL3485/IL3422 15 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation ...

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