IL41050
Isolated High-Speed CAN Transceiver
Functional Diagram
S
TxD
RxD
CANH
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
CANL
IL41050
V
DD2
(V)
4.75 to 5.25
4.75 to 5.25
4.75 to 5.25
<2V (no pwr)
2>V
DD2
<4.75
TxD
(1)
↓
X
↑
X
>2V
S
Low
X
X
X
(2)
CANH
High
V
DD2
/2
CANL
Low
V
DD2
/2
V
DD2
/2
Bus State
Dominant
Recessive
Recessive
RxD
Low
High
High
High
High
High V
DD2
/2
0<V<2.5 0<V<2.5 Recessive
0<V<2.5 0<V<2.5 Recessive
Single-chip isolated CAN/DeviceNet transceiver
Fully compliant with the ISO 11898 CAN standard
Best-in-class loop delay (180 ns typ.)
3.0 V to 5.5 V input power supplies
>110-node fan-out
High speed (up to 1 Mbps)
2,500 V
RMS
isolation (1 minute)
Very low Electromagnetic Emission (EME)
Differential signaling for excellent Electromagnetic Immunity (EMI)
30 kV/µs transient immunity
Silent mode to disable transmitter
Unpowered nodes do not disturb the bus
Transmit data (TxD) dominant time-out function
Edge triggered, non-volatile input improves noise performance
Bus pin transient protection for automotive environment
Thermal shutdown protection
Short-circuit protection for ground and bus power
−55°C
to +125°C operating temperature
0.15" and 0.3" and 16-pin JEDEC-standard SOIC packages
UL1577 and IEC 61010-2001 approved
Table 1.
Function table.
Applications
•
•
•
•
Notes:
1. TxD input is edge triggered:
↑
= Logic Lo to Hi,
↓
= Hi to Lo
2. Valid for logic state as described or open circuit
X = don’t care
Noise-critical CAN
Partially-powered CAN
DeviceNet
Factory automation
Description
The IL41050 is a galvanically isolated, high-speed CAN (Controller
Area Network) transceiver, designed as the interface between the
CAN protocol controller and the physical bus. The IL41050 provides
isolated differential transmit capability to the bus and isolated
differential receive capability to the CAN controller via NVE’s
patented* IsoLoop spintronic Giant Magnetoresistance (GMR)
technology.
Advanced features facilitate reliable bus operation. Unpowered nodes
do not disturb the bus, and a unique non-volatile programmable
power-up feature prevents unstable nodes. The devices also have a
hardware-selectable silent mode that disables the transmitter.
Designed for harsh CAN and DeviceNet environments, IL41050T
transceivers have transmit data dominant time-out, bus pin transient
protection, thermal shutdown protection, and short-circuit protection,
Unique edge-triggered inputs improve noise performance. Unlike
optocouplers or other isolation technologies, IsoLoop isolators have
indefinite life at high voltage.
IsoLoop
®
is a registered trademark of NVE Corporation.
*U.S. Patent number 5,831,426; 6,300,617 and others.
REV. J
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050
Absolute Maximum Ratings
(1) (2)
Parameters
Storage temperature
Ambient operating temperature
DC voltage at CANH and CANL pins
Supply voltage
Digital input voltage
Digital output voltage
DC voltage at V
REF
Transient Voltage at CANH or CANL
Electrostatic discharge at all pins
Electrostatic discharge at all pins
Symbol
T
S
T
A
V
CANH
V
CANL
V
DD
1
, V
DD
2
V
TxD
, V
S
V
RxD
V
REF
V
trt(CAN)
V
esd
V
esd
Min.
−55
−55
−27
−0.5
−0.3
−0.3
−0.3
−200
−4,000
−200
Typ.
Max.
150
135
40
6
V
DD
+ 0.3
V
DD
+ 0.3
V
DD
+ 0.3
200
4,000
200
Units
°C
°C
V
V
V
V
V
V
V
V
Test Conditions
0 V< V
DD2
< 5.25 V;
indefinite duration
Human body model
Machine model
Recommended Operating Conditions
Parameters
Supply voltage
Input voltage at any bus terminal
(separately or common mode)
High-level digital input voltage
(3) (4)
Symbol
V
DD
1
V
DD
2
V
CANH
V
CANL
V
IH
V
IL
I
OH
T
A
t
IR
, t
IF
Min.
3.0
4.75
−12
2.0
2.4
2.0
0
−8
−55
Typ.
Max.
5.5
5.25
12
V
DD
1
V
DD
1
V
DD
2
0.8
8
125
1
Units
V
V
V
V
mA
°C
μs
Test Conditions
Low-level digital input voltage
(3) (4)
Digital output current (RxD)
Ambient operating temperature
Digital input signal rise and fall times
V
DD
1
= 3.3 V
V
DD
1
= 5.0 V
V
DD
2
= 5.0 V
V
DD1
= 3.3V to 5V
Insulation Specifications
Parameters
Creepage distance (external)
Barrier impedance
Leakage current
Symbol
Min.
8.08
Typ.
> 10
14
|| 7
0.2
Max.
Units
mm
Ω
|| pF
μA
RMS
Test Conditions
240 V
RMS
, 60 Hz
Safety and Approvals
IEC61010-2001
TUV Certificate Numbers:
N1502812 (pending)
Package
SOIC (0.15" and 0.3")
Pollution Degree
II
Material Group
III
Max. Working Voltage
300 V
RMS
Classification: Reinforced Insulation
Model
IL41050
UL 1577
Component Recognition Program File Number: E207481
Rated 2,500V
RMS
for 1 minute
Soldering Profile
Per JEDEC J-STD-020C
Moisture Sensitivity Level: MSL=2
Notes:
1. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guarantee performance.
2. All voltages are with respect to network ground except differential I/O bus voltages.
3. The TxD input is edge sensitive. Voltage magnitude of the input signal is specified, but edge rate specifications must also be met.
4. The maximum time allowed for a logic transition at the TxD input is 1
μs.
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
IL41050
IL41050-3 Pin Connections (0.15" SOIC Package)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
DD1
GND
1
T D
RxD
NC
NC
NC
NC
IsoRxD
CANL
V
DD2
CANH
S
IsoTxD
GND
2
V
DD2
V
DD1
power supply input
V
DD1
power supply ground return
Transmit Data input
Receive Data output
No internal connection
No internal connection
No internal connection
No internal connection
Isolated RxD output.
No connection should be made to this pin.
Low level CANbus line
V
DD2
CAN I/O bus circuitry power supply input*
High level CANbus line
Mode select input. Leave open or set low for
normal operation; set high for silent mode.
Isolated TxD output.
No connection should be made to this pin.
V
DD2
power supply ground return
V
DD2
isolation power supply input*
NC
NC
NC
V
DD2
CANL
IsoRxD
V
DD1
GND
1
TxD
RxD
NC
V
DD2
GND
2
IsoTxD
S
CANH
IL41050 Pin Connections (0.3" SOIC Package)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
DD1
GND
1
TxD
NC
RxD
NC
NC
GND
1
GND
2
V
REF
V
DD2
CANL
CANH
S
GND
2
V
DD2
V
DD1
power supply input
V
DD1
power supply ground return
(pin 2 is internally connected to pin 8)
Transmit Data input
No internal connection
Receive Data output
No internal connection
No internal connection
V
DD1
power supply ground return
(pin 8 is internally connected to pin 2)
V
DD2
power supply ground return
(pin 9 is internally connected to pin 15)
Reference voltage output
(nominally 50% of V
DD2
)
V
DD2
CAN I/O bus circuitry power supply input*
Low level CANbus line
High level CANbus line
Mode select input. Leave open or set low for
normal operation; set high for silent mode.
V
DD2
power supply ground return
(pin 15 is internally connected to pin 9)
V
DD2
isolation power supply input*
GND
1
GND
2
GND
1
TxD
NC
RxD
NC
NC
GND
2
S
CANH
CANL
V
DD2
V
REF
V
DD1
V
DD2
*NOTE: Pin 11 is not internally connected to pin 16; both should be connected to the V
DD2
power supply for normal operation.
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
IL41050
Specifications
Electrical Specifications are T
min
to T
max
and V
DD1
, V
DD2
= 4.75 V to 5.25 V unless otherwise stated.
Parameters
Symbol
Min.
Typ.
Max.
Power Supply Current
1
1.75
3.0
Quiescent supply current (recessive)
IQ
VDD1
0.7
1.4
2.0
1.2
Dynamic supply current (dominant)
Quiescent supply current (recessive)
Dynamic supply current (dominant)
Transmitter Data input (TxD)
(1)
High level input voltage
↑
High level input voltage
↑
Low level input voltage
↓
TxD input rise and fall time
(2)
High level input current
Low level input current
Mode select input (S)
High level input voltage
Low level input voltage
High level input current
Low level input current
Receiver Data output (RxD)
High level output current
Low level output current
Failsafe supply voltage
(4)
Reference Voltage output (V
REF
)
Reference Voltage output
Bus lines (CANH and CANL)
Recessive voltage at CANH pin
Recessive voltage at CANL pin
Recessive current at CANH pin
Recessive current at CANL pin
Dominant voltage at CANH pin
Dominant voltage at CANL pin
Differential bus input voltage
(V
CANH
−
V
CANL
)
Short-circuit output current at CANH
Short-circuit output current at CANL
Differential receiver threshold voltage
Differential receiver input voltage
hysteresis
Common Mode input resistance at
CANH
Common Mode input resistance at
CANL
Matching between Common Mode
input resistance at CANH, CANL
Differential input resistance
Input capacitance, CANH
Input capacitance, CANL
I
VDD1
0.9
IQ
VDD2
I
VDD2
V
IH
V
IH
V
IL
tr
I
IH
I
IL
V
IH
V
IL
I
IH
I
IL
I
OH
I
OL
V
DD2
V
REF
V
O(reces)
CANH
V
O(reces)
CANL
I
O(reces)
CANH
I
O(reces)
CANL
V
O(dom)
CANH
V
O(dom)
CANL
V
i(dif)(bus)
−50
I
O(sc)
CANH
I
O(sc)
CANL
V
i(dif)(th)
V
i(dif)(hys)
R
i(CM)(CANH)
R
i(CM)(CANL)
R
i(CM)(m)
R
i(diff)
C
i(CANH)
C
i(CANL)
−45
45
0.5
50
15
15
−3
25
0
−70
70
0.7
70
25
25
0
50
7.5
7.5
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
Units
mA
Test Conditions
dr = 0 bps; V
DD
1
= 5 V
dr = 0 bps; V
DD
1
= 3.3 V
dr = 1 Mbps, R
L
= 60Ω;
V
DD
1
= 5 V
dr = 1 Mbps, R
L
= 60Ω;
V
DD
1
= 3.3 V
0 bps
1 Mbps, R
L
= 60Ω
V
DD
1
= 5 V; recessive
V
DD
1
= 3.3 V; recessive
Output dominant
10% to 90%
tr
V
TxD
= V
DD
1
V
TxD
= 0 V
Silent mode
High-speed mode
V
S
= 2 V
V
S
= 0 V
V
RxD
= 0.8 V
DD1
V
RxD
= 0.45 V
−50 μA<I
VREF
< +50
μA
V
TxD
= V
DD1
, no load
V
TxD
= V
DD1
, no load
−27
V < V
CANH
< +32V;
0V < V
DD2
<5.25V
−27
V < V
CANL
< +32V;
0 V <V
DD2
< 5.25 V
V
TxD
= 0 V
V
TxD
= 0 V
V
TxD
= 0 V; dominant
42.5
Ω
< R
L
< 60
Ω
V
TxD
= V
DD1
;
recessive; no load
V
CANH
= 0 V, V
TxD
= 0
V
CANL
= 36 V, V
TxD
= 0
−12
V <V
CANL
< +12V;
−12
V <V
CANH
< +12 V
−12
V <V
CANL
< +12 V;
−12
V <V
CANH
< +12 V
2.0
1.6
6.75
52
3.2
mA
2.2
13
78
5.25
3.6
0.8
1
10
10
V
DD
2
+ 0.3
0.8
45
10
−20
20
3.9
0.55 V
DD2
3.0
3.0
+2.5
+2.5
mA
V
V
V
μs
μA
μA
V
V
μA
μA
mA
mA
V
V
V
V
mA
mA
V
V
V
mV
mA
mA
V
mV
kΩ
kΩ
%
kΩ
pF
pF
3.5
26
2.4
2.0
−0.3
−10
10
2.0
−0.3
20
15
−2
2
3.6
0.45 V
DD2
2.0
2.0
−2.0
−2.0
3.0
0.5
1.5
30
30
−8.5
8.5
0.5 V
DD2
2.5
2.5
3.6
1.4
2.25
4.25
1.75
3.0
+50
−95
100
0.9
100
35
35
+3
75
20
20
V
CANL
= V
CANH
V
TxD
= V
DD1
V
TxD
= V
DD1
IL41050
Specifications
(...cont.)
Electrical Specifications are T
min
to T
max
and V
DD1
, V
DD2
= 4.5 V to 5.5 V unless otherwise stated.
3.75
10
Differential input capacitance
C
i(dif)
Input leakage current at CANH
I
LI(CANH)
100
170
250
Input leakage current at CANL
I
LI(CANL)
100
170
250
Thermal Shutdown
Shutdown junction temperature
T
j(SD)
155
165
180
Timing Characteristics
29
63
125
TxD to bus active delay
t
d(TxD-BUSon)
32
66
128
29
68
110
TxD to bus inactive delay
t
d(TxD-BUSoff)
32
71
113
24
58
125
Bus active to RxD delay
t
d(BUSon-RxD)
27
61
128
49
103
170
Bus inactive to RxD delay
t
d(BUSoff-RxD)
52
106
173
Loop delay low-to-high or high-to-low
T
LOOP
53
180
210
TxD dominant time for timeout
T
dom(TxD)
250
457
765
pF
μA
μA
°C
ns
ns
ns
ns
ns
μs
V
S
= 0 V; V
DD1
= 5 V
V
S
= 0 V; V
DD1
= 3.3 V
V
S
= 0 V; V
DD1
= 5 V
V
S
= 0 V; V
DD1
= 3.3 V
V
S
= 0 V; V
DD1
= 5 V
V
S
= 0 V; V
DD1
= 3.3 V
V
S
= 0 V; V
DD1
= 5 V
V
S
= 0 V; V
DD1
= 3.3 V
V
S
= 0 V
V
TxD
= 0 V
3.0 V > V
DD1
< 5.5 V
V
TxD
= V
DD1
V
CANH
= 5 V, V
DD2
= 0 V
V
CANL
= 5 V, V
DD2
= 0 V
Magnetic Field Immunity
(3)
Power frequency magnetic immunity
Pulse magnetic field immunity
Cross-axis immunity multiplier
Power frequency magnetic immunity
Pulse magnetic field immunity
Cross-axis immunity multiplier
H
PF
H
PM
K
X
H
PF
H
PM
K
X
V
DD1
= 5 V, V
DD2
= 5 V
2,500
3,000
3,000
3,500
1.8
V
DD1
= 3.3 V, V
DD2
= 5 V
1,000
1,500
1,800
2,000
1.5
A/m
A/m
50 Hz/60 Hz
t
p
= 8 µs
Figure 1
50 Hz/60 Hz
t
p
= 8 µs
Figure 1
A/m
A/m
Notes:
1. The TxD input is edge sensitive. Voltage magnitude of the input signal is specified, but edge rate specifications must also be met.
2. The maximum time allowed for a logic transition at the TxD input is 1
μs.
3. Uniform magnetic field applied across the pins of the device. Cross-axis multiplier effective when field is applied perpendicular to the pins.
4. If V
DD2
falls below the specified failsafe supply voltage, RxD will go High.
Electrostatic Discharge Sensitivity
This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all integrated
circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could range from performance
degradation to complete failure.
Electromagnetic Compatibility
The IL41050 is fully compliant with generic EMC standards EN50081, EN50082-1 and the umbrella line-voltage standard for Information
Technology Equipment (ITE) EN61000. The IsoLoop Isolator’s Wheatstone bridge configuration and differential magnetic field signaling ensure
excellent EMC performance against all relevant standards. NVE conducted compliance tests in the categories below:
EN50081-1
Residential, Commercial & Light Industrial
Methods EN55022, EN55014
EN50082-2: Industrial Environment
Methods EN61000-4-2 (ESD), EN61000-4-3 (Electromagnetic Field Immunity), EN61000-4-4 (Electrical Transient Immunity),
EN61000-4-6 (RFI Immunity), EN61000-4-8 (Power Frequency Magnetic Field Immunity), EN61000-4-9 (Pulsed Magnetic
Field), EN61000-4-10 (Damped Oscillatory Magnetic Field)
ENV50204
Radiated Field from Digital Telephones (Immunity Test)
Immunity to external magnetic fields is higher if the field direction is “end-to-end” (rather than to “pin-to-pin”) as shown in the
diagram at right.
5
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
Fig. 1
©NVE Corporation
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