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參數資料
| 型號： | IL3485E |
| 廠商： | NVE Corp/Isolation Products |
| 文件頁數： | 1/18頁 |
| 文件大小： | 0K |
| 描述： | TXRX ISO BUS 20MBPS RS485 16SOIC |
| 產品培訓模塊： | IsoLoop® Isolator |
| 標準包裝： | 50 |
| 系列： | IsoLoop® |
| 類型： | 收發器，隔離式 |
| 驅動器/接收器數： | 1/1 |
| 規程： | RS485 |
| 電源電壓： | 3 V ~ 5.5 V，4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 16-SOIC |
| 包裝： | 管件 |
| 其它名稱： | 390-1099-5 |
IL3485/IL3422
IsoLoop is a registered trademark of NVE Corporation.
*U.S. Patent numbers 5,831,426; 6,300,617 and others.
REV. P
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
www.isoloop.com
iso-info@nve.com
NVE Corporation
High Speed Passive Input RS-485 and RS-422 Isolated Transceivers
Functional Diagrams
R
RE
A
B
Z
R
RE
Y
IL3422
IL3485
A
B
V
COIL2
V
COIL1
V
COIL1
V
COIL2
DE
D
DE
D
IL3485 Truth Table
V(A–B)
DE
D
R
RE
Mode
≥ 200 mV
H
L
Drive
≤200 mV
H
L
Drive
≥ 200 mV
L
X
H
L
Receive
≤200 mV
L
X
L
Receive
X
Z
H
X
Open
L
X
H
L
Receive
Z = High Impedance
X = Irrelevant
IL3422 Receiver
RE
R
V(A–B)
H
Z
X
L
H
≥ 200 mV
L
≤200 mV
L
H
Open
IL3422 Driver
DE
D
V(Y–Z)
L
X
Z
H
≥ 200 mV
H
L
≤200 mV
Features
20 Mbps data rate
3 V to 5 V power supplies
Supports up to 32 nodes
15 kV bus ESD protection
2500 VRMS isolation per UL 1577
20 kV/s typical common mode rejection
No carrier or clock for low EMI emissions and susceptibility
40°C to +85°C temperature range
Thermal shutdown protection
UL 1577 recognized; IEC 60747-5-5 (VDE 0884) certified
0.15", 0.3", or True 8 mm 16-pin SOIC packages
Applications
Data loggers
P.O.S. systems
Security networks
Building environmental controls
Industrial control networks
Factory automation
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 load, and the IL3422 at least 2 V
into a 100 load for excellent data integrity over long
cables. These devices are also compatible with 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.”
Selection Table
Model
Full/Half
Duplex
No. of Devices
Allowed on Bus
Data Rate
Mbps
Fail-Safe
IL3485
half
32
20
yes
IL3422
full
32
20
yes
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