Features
•
Capability of Single-wire Operation
•
Hardware Fault Recognition
•
Inputs with High Common-mode and Differential-mode Interference Rejection Above
100 V
PP
due to External Filters at the Receiver Input
•
Immunity Against Electromagnetic Interference
•
Immunity Against Ground-voltage Offsets < 6V
•
Ruggedized Against ESD by MIL-STD-883C, Method 3015
Can Transceiver
IC
B10011S
Benefits
Systems which employ this device have the following benefits compared to solutions
using discrete components:
•
High Reliability
Applications
•
Especially Suited for Truck and Van Applications
•
Interface Between Truck and Trailer
•
Interface Between Dashboard and Engine
1. Description
The CAN driver IC B10011S is a low-speed, high-level interface for 24V (27V) opera-
tion with transmission levels according to ISO WD 11992-1 (point-to-point interface
between trucks and trailers). It is developed for signal levels of 8V/16V and a speed of
up to 250 kbits/s.
This device allows transmission, that is insensitive to electromagnetic interference.
Such interferences may especially occur in truck applications where (due to the length
of the wires) high common-mode voltages (e.g., 50) can be coupled into the lines.
This device contains a fault recognition circuit that detects faults on one of the two
wires, which are normally used for transmission. If a fault occurs the operation can be
switched from double-wire to single-wire mode thus, allowing proper operation even if
one wire is broken, has a short-cut or a high series resistance.
Rev. 4749C–AUTO–09/05
Figure 1-1.
Block Diagram
1
2
3
4
5
6
7
8
V
DD
V
SS
2.5 V
Error
control
+4.3 V
V
CC
Select
control
Compa-
rators
16
15
14
13
12
11
10
GND
9
Output
control
B10011S
2
B10011S
4749C–AUTO–09/05
B10011S
2. Pin Configuration
Figure 2-1.
Pinning SO16
ASEL
BSEL
ER
RX1
RX0
TX0
VDD
VSS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
F1
F0
S+
VCC
H'
L'
GND
S-
Table 2-1.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Description
16-lead SOIC (SO16), Small Outline Gull - Wing
Symbol
ASEL
BSEL
ER
RX1
RX0
TX0
VDD
VSS
S-
GND
L’
H’
VCC
S+
F0
F1
Function
Select control input
Select control input
Error signal output
Reference voltage 2.5V
Receiver output
Transmitter input
Controller supply voltage 5V
Controller supply voltage 0V
Collector of internal NPN switch
Vehicle ground 0V
Data out driver
Data out driver
Vehicle power supply 24V
Control output for external PNP
Receiver input
Receiver input
3
4749C–AUTO–09/05
3. Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters
Supply voltage
Controller supply voltage
Input voltage at any input
Junction temperature
Storage temperature range
Soldering temperature (for 10s maximum)
Symbol
V
CC
V
DD
V
in
T
j
T
stg
T
sld
Value
–0.5 to +36
–0.5 to +5.5
–0.5 to V
DD
150
–55 to +150
260
Unit
V
V
V
°C
°C
°C
Operating Conditions
Parameters
Supply voltage car battery
Controller supply voltage
Control input voltage
Input voltage
Operating temperature
Symbol
V
CC
V
DD
A
sel
, B
sel
T
x0
T
amb
Value
7 to 32
4.75 to 5.25
0 to V
DD
0 to V
DD
–40 to +105
Unit
V
V
V
V
°C
4. Operating Modes
0 = 0V, 1 = 5V
A
sel
0
1
0
1
B
sel
0
0
1
1
R
x0
3.8V
From H
From L
From L-H
Mode
H, L drivers disabled, L load disabled, S-, S+ disabled station not in operation, but
consuming current
Single-wire H, L driver, L load, S-, S+ disabled
Single-wire L, H driver disabled
Two-wire operation, normal mode
ER (error signal) is low when normal operation is disturbed by line faults (interruption, short to
ground or to V
CC
, H to L short disturbance by high voltage transients). After a waiting period due
to transient delays, the controller is asked to test if single-wire operation is possible by changing
the A
sel
and B
sel
state.
A
sel
and B
sel
have an internal pull-up resistor. Therefore, the no-connect state is 1, but connec-
tion to V
DD
is recommended when not in use.
4
B10011S
4749C–AUTO–09/05
B10011S
5. Pulse Diagram
The pulse diagram for two connected, identical stations is shown below. The resistor levels have
to be kept constant when additional stations are connected.
Figure 5-1.
Pulse Diagram
TX0
5V
dominant
0V
4 ms min
(1)
5V
RX0
recessive
t
0V
t
27 V
L
18 V
H
9V
0V
t
27 V
L'
18 V
H'
9V
0V
(1)
t
Filter has to be changed if short distances are to be allowed
5
4749C–AUTO–09/05
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