IL3585
High Speed Isolated RS-485 Transceivers
Functional Diagrams
Features
•
•
•
•
DE
ISODE
XDE
•
•
•
•
•
•
•
•
•
D
R
RE
A
B
IL3585-3
(narrow-body)
•
•
40 Mbps data rate
3 V to 5 V power supplies
20 ns propagation delay
5 ns pulse skew
50 kV/μs typ.; 30 kV/μs min. common mode transient immunity
Low quiescent supply current
1000 V
RMS
/1500 V
DC
high voltage endurance
44000 year barrier life
15 kV bus ESD protection
Low EMC footprint
Thermal shutdown protection
−40°C
to +85°C temperature range
Meets or exceeds ANSI RS-485 and ISO 8482:1987(E)
UL 1577 recognized; IEC 60747-5-5 (VDE 0884) certified
0.15", 0.3", or True 8™ 16-pin SOIC packages
DE
ISODE
Applications
•
•
•
•
•
D
R
RE
A
B
Factory automation
Industrial control networks
Building environmental controls
Equipment covered under IEC 61010-1 Edition 3
5 kV
RMS
rated IEC 60601-1 medical applications
Description
IL3585
(wide-body)
The IL3585 is a galvanically isolated, high-speed differential bus
transceiver, designed for bidirectional data communication on
balanced transmission lines. The device uses NVE’s patented*
IsoLoop spintronic Giant Magnetoresistance (GMR) technology.
A unique ceramic/polymer composite barrier provides excellent
isolation and virtually unlimited barrier life.
The part is available in an ultraminiature 0.15" 16-pin SOIC
package, a JEDEC-standard 0.3"-wide package, or NVE’s exclusive
True 8™ 16-pin SOIC package for true 8 millimeter creepage.
V
ID
(A-B)
≥
200 mV
≤−200
mV
≥
1.5 V
≤−1.5
V
X
Open
DE
L
L
H
H
X
L
RE
L
L
L
L
H
L
R
H
L
H
L
Z
H
D
X
X
H
L
X
X
Mode
Receive
Receive
Drive
Drive
Hi-Z R
Receive
The IL3585 delivers an exceptional 2.3 V differential output into a
54
Ω
load over the supply range of 4.5 V to 5.5 V. This provides
better data integrity over longer cable lengths, even at data rates as
high as 40 Mbps. The device is also compatible with 3 V supplies,
allowing interface to standard microcontrollers without additional
level shifting.
Current limiting and thermal shutdown features protect against
output short circuits and bus contention that may cause excessive
power dissipation. Receiver inputs feature a “fail-safe if open”
design, ensuring a logic high R-output if A/B are floating.
IsoLoop
®
is a registered trademark of NVE Corporation.
*U.S. Patent number 5,831,426; 6,300,617 and others.
REV. Q
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL3585
Absolute Maximum Ratings
(11)
Parameter
Storage Temperature
Junction Temperature
Ambient Operating Temperature
Voltage Range at A or B Bus Pins
Supply Voltage
(1)
Digital Input Voltage
Digital Output Voltage
ESD (all bus nodes)
Symbol
T
S
T
J
T
A
V
DD
1
, V
DD
2
Min.
−55
−55
−40
−7
−0.5
−0.5
−0.5
15
Typ.
Max.
150
150
85
12
7
V
DD
+ 0.5
V
DD
+ 1
Units
°C
°C
°C
V
V
V
V
kV
Test Conditions
HBM
Recommended Operating Conditions
Parameter
Supply Voltage
Junction Temperature
Input Voltage at any Bus Terminal
(separately or common mode)
High-Level Digital Input Voltage
Low-Level Digital Input Voltage
Differential Input Voltage
(2)
High-Level Output Current (Driver)
High-Level Digital Output Current
(Receiver)
Low-Level Output Current (Driver)
Low-Level Digital Output Current
(Receiver)
Ambient Operating Temperature
Digital Input Signal Rise and Fall Times
Symbol
V
DD
1
V
DD
2
T
J
V
I
V
IC
V
IH
V
IL
V
ID
I
OH
I
OH
I
OL
I
OL
T
A
t
IR
, t
IF
−60
−8
−40
Min.
3.0
4.5
−40
2.4
3.0
0
Typ.
Max.
5.5
5.5
110
12
−7
V
DD
1
0.8
+12 /
−7
60
8
Units
V
°C
V
V
V
V
mA
mA
mA
mA
85
°C
DC Stable
V
DD
1
= 3.3 V
V
DD
1
= 5.0 V
Test Conditions
Insulation Specifications
Parameter
Creepage Distance
IL3585-3E
(external)
IL3585E
Total Barrier Thickness (internal)
Barrier Resistance
Barrier Capacitance
Leakage Current
Comparative Tracking Index
High Voltage Endurance
AC
(Maximum Barrier Voltage
for Indefinite Life)
DC
Barrier Life
Symbol
Min.
4.0
8.03
0.012
Typ.
8.3
0.013
>10
14
3
0.2
Max.
Units
mm
mm
Ω
pF
μA
RMS
V
V
RMS
V
DC
44000
Years
Test Conditions
Per IEC 60601
500 V
f = 1 MHz
240 V
RMS
, 60 Hz
Per IEC 60112
At maximum
operating temperature
100°C, 1000 V
RMS
, 60%
CL activation energy
R
IO
C
IO
CTI
V
IO
≥175
1000
1500
Thermal Characteristics
Parameter
Junction–Ambient
Thermal Resistance
Junction–Case
Thermal Resistance
Power Dissipation
Symbol
IL3585-3E
IL3585E
IL3585-3E
IL3585E
IL3585-3E
IL3585E
θ
J
A
Ψ
JT
P
D
Min.
Typ.
100
60
25
12
Max.
Units
°C/W
°C/W
625
800
mW
Test Conditions
Soldered to double-
sided board; free air;
case temperature
measured on top surface
2
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL3585
Safety and Approvals
IEC 60747-5-5 (VDE 0884)
(File Number 5016933-4880-0001)
•
Working Voltage (V
IORM
) 600 V
RMS
(848 V
PK
); basic insulation; pollution degree 2
•
Transient overvoltage (V
IOTM
) and surge voltage (V
IOSM
) 4000 V
PK
•
Each part tested at 1590 V
PK
for 1 second, 5 pC partial discharge limit
•
Samples tested at 4000 V
PK
for 60 sec.; then 1358 V
PK
for 10 sec. with 5 pC partial discharge limit
IEC 61010-1
(Edition 2; TUV Certificate Numbers N1502812; N1502812-101)
Reinforced Insulation; Pollution Degree II; Material Group III
Part No. Suffix
-3
None
Package
SOIC
Wide-body SOIC/True 8™
Working Voltage
150 V
RMS
300 V
RMS
UL 1577
(Component Recognition Program File Number E207481)
Each part tested at 3000 V
RMS
(4240 V
PK
) for 1 second; each lot sample tested at 2500 V
RMS
(3530 V
PK
) for 1 minute
Soldering Profile
Per JEDEC J-STD-020C, MSL 1
3
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL3585
IL3585-3 (0.15" SOIC Package) Pin Connections
1
2
3
4
5
6
7, 8, 9
V
DD1
GND
1
R
RE
D
DE
NC
Input power supply
Input power supply ground return
Output data from bus
Read data enable
(if RE is high, R= high impedance)
Data input to bus
Drive enable
No internal connection
Transceiver Device Enable input enables the
transceiver from the bus side, or is
connected to ISODE to enable the trans-
ceiver from the controller-side DE input.
(this input should not be left unterminated)
Non-inverting bus line
Inverting bus line
Output transceiver power supply
(normally connected to pin 16)
Isolated DE output
(normally connected to pin 10)
Output power supply ground return.
Output isolation power supply
(normally connected to pin 13)
VDD
1
GND
1
R
RE
D
DE
NC
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDD
2I
GND
2
ISODE
VDD
2X
B
A
XDE
NC
10
XDE
11
12
13
14
15
16
A
B
V
DD2X
ISODE
GND
2
V
DD2I
IL3585-3
IL3585 (0.3" SOIC Package) Pin Connections
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
DD1
GND
1
R
RE
DE
D
NC
GND
1
GND
2
ISODE
NC
A
B
NC
GND
2
V
DD2
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 use 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
4
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
VDD
1
GND
1
R
RE
DE
D
NC
GND
1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDD
2
GND
2
NC
B
A
NC
ISODE
GND
2
IL3585
IL3585
Driver Section
Electrical Specifications
(T
min
to T
max
and V
DD
= 4.5 V to 5.5 V unless otherwise stated)
Typ.
(5)
Parameter
Symbol
Min.
Max.
Units
Input Clamp Voltage
V
IK
−1.5
V
Output voltage
V
O
V
DD
V
(2)
Differential Output Voltage
|V
OD
1
|
V
DD
V
(2)
Differential Output Voltage
|V
OD
2
|
2.5
3
5
V
(2, 6)
Differential Output Voltage
V
OD
3
2.3
5
V
Change in Magnitude of Differential
Δ|V
OD
|
±0.2
V
Output Voltage
(7)
Common Mode Output Voltage
V
OC
3
V
Change in Magnitude of Common
Δ|V
OC
|
±0.2
V
Mode Output Voltage
(7)
1
Output Current
(4)
I
O
mA
−0.8
High Level Input Current
I
IH
10
μA
Low Level Input Current
I
IL
−10
μA
Absolute |Short-circuit Output Current|
I
OS
250
mA
I
DD
1
V
DD
1
= 5 V
4
6
Supply Current
mA
I
DD
1
V
DD
1
= 3.3 V
3
4
Test Conditions
I
L
=
−18
mA
I
O
= 0
I
O
= 0
R
L
= 54
Ω,
V
DD
= 5 V
R
L
= 54
Ω,
V
DD
= 4.5 V
R
L
= 54
Ω
or 100
Ω
R
L
= 54
Ω
or 100
Ω
R
L
= 54
Ω
or 100
Ω
Output Disabled,
V
O
= 12
V
O
=
−7
V
I
= 3.5 V
V
I
= 0.4 V
−7
V < V
O
< 12 V
No Load
(Outputs Enabled)
Notes
(apply to both driver and receiver sections):
1.
2.
3.
4.
5.
6.
7.
8.
9.
All voltages are with respect to network ground except differential I/O bus voltages.
Differential input/output voltage is measured at the noninverting terminal A with respect to the inverting terminal B.
Skew limit is the maximum propagation delay difference between any two devices at 25°C.
The power-off measurement in ANSI Standard EIA/TIA-422-B applies to disabled outputs only and is not applied to combined inputs and
outputs.
All typical values are at V
DD
1
,V
DD
2
= 5 V or V
DD
1
= 3.3 V and T
A
= 25°C.
−7
V < V
CM
< 12 V; 4.5 V < V
DD
< 5.5 V.
Δ|V
OD
| and
Δ|V
OC
| are the changes in magnitude of V
OD
and V
OC
, respectively, that occur when the input is changed from one logic state to
the other.
This applies for both power on and power off, refer to ANSI standard RS-485 for exact condition. The EIA/TIA-422-B limit does not apply
for a combined driver and receiver terminal.
Includes 10 ns read enable time. Maximum propagation delay is 25 ns after read assertion.
10. Pulse skew is defined as |t
PLH
– t
PHL
| of each channel.
11. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guarantee
performance.
12. The relevant test and measurement methods are given in the Electromagnetic Compatibility section on p. 6.
13. External magnetic field immunity is improved by this factor if the field direction is “end-to-end” rather than to “pin-to-pin” (see diagram on p. 6).
5
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
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