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IL3585 の電気的特性と機能

IL3585のメーカーはNVEです、この部品の機能は「PROFIBUS Compatible Isolated RS485 Interface」です。


製品の詳細 ( Datasheet PDF )

部品番号 IL3585
部品説明 PROFIBUS Compatible Isolated RS485 Interface
メーカ NVE
ロゴ NVE ロゴ 




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IL3585 Datasheet, IL3585 PDF,ピン配置, 機能
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IL3585
PROFIBUS Compatible Isolated RS485 Interface
Functional Diagram
VID (A-B)
200 mV
-200 mV
1.5 V
-1.5 V
X
DE RE
LL
LL
HL
HL
XH
R
H
L
H
L
Z
Features
3.3 / 5 V Input Supply Compatible
2500 VRMS Isolation (1 min)
20 ns Propagation Delay
40 Mbps Data Rate
5 ns Pulse Skew
20 kV/us Transient Immunity
Thermal Shutdown Protection
-40°C to +85°C Temperature Range
PROFIBUS Compliant
16 Pin SOIC Package
UL1577 Approval Pending
IEC 61010-1 Approval Pending
D Mode
X Receive
X Receive
H Drive
L Drive
Applications
Security Networks
ProfiBus DP and FMS Networks
Building Environmental Controls
Industrial Control Networks
Gaming Systems
Factory Automation
X Hi Z R
Description
DataShee
The IL3585 is a galvanically isolated, high-speed differential bus
DataSheet4Utr.acnosmceiver, designed for bi-directional data communication on
balanced transmission lines. Isolation is achieved through patented*
Isoloop® technology. The IL3585 offers an exceptional 2.5 V
differential output into a 54 load, which translates to better data
integrity over longer cable lengths, even at data rates as high as 40
Mbps. The device is also compatible with 3.3V input supplies,
allowing interface to standard microcontrollers without the need for
additional level shifting components.
The IL3585 has current limiting and thermal shutdown features to
protect against output short circuits and bus contention situations
which may cause excessive power dissipation.
Isoloop® is a registered trademark of NVE Corporation.
DataShee*ItSU4B.US-D..PcSa-o0tem0n1t-nILu6m1b2e-rA5,,8Ja3n1u,4a2ry6;260,,320000,6517 and others.
NVE Corp., 11409 Valley View Road, Eden Prairie, MN 55344-3617, U.S.A.
Telephone: 952-829-9217, Fax 952-829-9189, www.isoloop.com
© 2005 NVE Corporation

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IL3585 pdf, ピン配列
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Pin Connections
1 VDD1
2 GND1
3R
4 RE
5 DE
6D
7 NC
8 GND1
9 GND2
10 ISODE
et4U.com
11
12
13
14
15
16
NC
A
B
NC
GND2
VDD2
Input Power Supply
Input Power Supply Ground Return. (Pin 2
is internally connected to Pin 8)
Output Data from Bus
Read Data Enable (if RE is high, R= high
impedance)
Drive Enable
Data Input to Bus
No Internal Connection
Input Power Supply Ground Return. (Pin 8
is internally connected to Pin 2)
Output Power Supply Ground Return. (Pin 9
is internally connected to Pin 15)
Isolated DE Output for us in Profibus
applications where the state of the isolated
drive enable node needs to be monitored.
No Internal Connection
Non-inverting bus line
Inverting bus line
No Internal Connection
Output Power Supply Ground Return. (Pin
15 is internally connected to Pin 9)
Output Power Supply
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IL3585
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IL3585 電子部品, 半導体
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IL3585
Power Consumption
Isoloop devices achieve their low power consumption by detecting
the edge transitions of the input logic signal and converting these to
narrow current pulses. This technique creates a supply current
which is proportional to data rate, which has obvious advantages
over optocouplers whose power consumption is dependent on
mark:space ratio.
Table 2. Typical Dynamic Supply Currents.
Data Rate (Mbps)
1
10
20
40
IDD1
300 µA
3 mA
6 mA
12 mA
IDD2
300 µA
3 mA
6 mA
12 mA
Power Supplies
It is required that low ESR capacitors such as ceramic are used to
decouple the supplies. Both VDD1 and VDD2 must be bypassed with
47 nF capacitors. These should be placed as close as possible to
VDD pins for proper operation. In addition, V DD2 should have a
10 µF tantalum capacitor connected in parallel with the 47 nF
capacitor.
DC Correctness
et4U.com The IL3585 incorporates a patented refresh circuit which
effectively maintains the correct output state with respect to data
input. At power up, the bus outputs will follow the Function TDabalteaSheet4U.com
shown on Page 1. It is recommended that the DE input is always
held low during power up to eliminate false drive data pulses from
the bus. The use of an external power supply monitor to minimize
glitches caused by slow power-up and power-down transients is not
required.
Application Information_______________________
Receiver Features
The IL3585 receiver includes a “fail-safe if open” function that
guarantees a high level receiver output if the receiver inputs are
unconnected (floating). IL3585 receiver outputs have tri-state
capability via the active low RE input.
Driver Features
The RS-485 driver is a differential output device that delivers at
least 1.5 V across a 54 load. The drivers feature low propagation
delay skew to maximize bit width and to minimize EMI. The
IL3585 drivers have tri-state capability via the active high DE
input.
Receiver Data Rate, Cables and Terminations
This device is intended for network lengths up to 4000', but the
maximum system data rate decreases as the transmission line length
increases. Twisted pair cable should be used in all networks since
they tend to pick up noise and other electromagnetically induced
voltages as common mode signals, which are effectively rejected
by the differential receivers in these ICs.
DataShee
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6
NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

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