Datasheet
LIN Transceiver for Automotive
BD41030FJ-C
General Description
BD41030FJ-C is the best transceiver for BUS system
which need LIN (Local Interconnect Network) master
and slave protocol.
BD41030FJ-C is available in small SOP package and
low standby electricity consumption in sleep mode.
Key Specifications
Supply Voltage:
Supply Current (Sleep mode):
Supply Current:
(Standby mode; Recessive)
Supply Current:
(Normal mode; Recessive)
Supply Current:
(Normal mode; Dominant)
5V to 27V
1μA to 8μA
100μA to 1000μA
100μA to 1000μA
200μA to 2000μA
Features
AEC-Q100 Qualified
Absolute maximum ratings of LIN pin is -27V to+40V
Max transmission rate 20kbps
Low Electro Magnetic Emission (EME)
High Electro Magnetic Immunity (EMI)
High impedance at power off for bus
Interface (RXD/TXD) with protocol layer
corresponds to 3.3V/5.0V logic.
Built-in terminator for LIN slave
Standby power consumption in sleep mode
Transmit data(TXD) dominant time-out function
Resistant to LIN-BAT/GND short-circuit
Built-in Thermal Shut Down(TSD)
(Note1:Grade1)
(Note 1)
Package(s)
SOP-J8
W(Typ) x D(Typ) x H(Max)
4.90mm x 6.00mm x 1.65mm
Applications
LIN communication for Automotive networks.
SOP-J8
Typical Application Circuit(s)
Figure 1. Typical Application Circuit
〇Product
structure : Silicon monolithic integrated circuit
.
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〇This
product has no designed protection against radioactive rays
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BD41030FJ-C
Datasheet
Contents
General Description ........................................................................................................................................................................1
Features..........................................................................................................................................................................................1
Applications ....................................................................................................................................................................................1
Key Specifications...........................................................................................................................................................................1
Package(s)......................................................................................................................................................................................1
Typical Application Circuit(s) ...........................................................................................................................................................1
Contents .........................................................................................................................................................................................2
Pin Configuration(s) ........................................................................................................................................................................3
Pin Description(s) ...........................................................................................................................................................................3
Block Diagram(s) ............................................................................................................................................................................3
Description of Block(s) ....................................................................................................................................................................4
Absolute Maximum Ratings ............................................................................................................................................................6
Recommended Operating Conditions .............................................................................................................................................6
Electrical Characteristics.................................................................................................................................................................7
Typical Performance Curves......................................................................................................................................................... 11
Timing Chart .................................................................................................................................................................................34
Application Example(s) .................................................................................................................................................................36
Power Dissipation .........................................................................................................................................................................37
I/O equivalent circuit(s) .................................................................................................................................................................38
Operational Notes
.......................................................................................................................................................................39
Ordering Information .....................................................................................................................................................................41
Marking Diagrams.........................................................................................................................................................................41
Physical Dimension, Tape and Reel Information...........................................................................................................................42
Revision History............................................................................................................................................................................43
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Pin Configuration(s)
(TOP VIEW)
RXD
NSLP
NWAKE
TXD
1
2
3
4
8
7
6
5
INH
BAT
LIN
GND
Datasheet
Figure 2. Pin Configuration
Pin Description(s)
Pin No.
1
2
3
4
5
6
7
8
Pin Name
RXD
NSLP
NWAKE
TXD
GND
LIN
BAT
INH
Table 1. Pin Description
Function
Received data output pin (Open Drain).
“L” is output at standby mode.
Sleep control input pin (“L” Active mode).
Shift to sleep mode by “L” input in normal mode.
Local wake-up input pin (“L” Active mode).
Active at leading edge.
Transmission data input pin(“L” Active mode)
Ground
LIN bus input and output pin.
Power supply pin.
Sleep status indicator.
“Hi-z” at sleep mode and “H” in the other modes.
Block Diagram(s)
Figure 3. Block diagram
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Description of Block(s)
Datasheet
1. Sleep mode
In sleep mode, the transmit/receive function is not available and BD41030FJ-C is under the condition of low power
consumption mode. In this mode BD41030FJ-C shifts to sleep mode at startup of power supply (V
BAT
) when NSLP is “L”
or in normal mode also when pin NSLP is “L”.
During sleep mode, one of the following wake-up events triggers a shift of state:
・Pin
NWAKE
“H”→“L”
(Shift to standby mode)
・Pin
LIN
“H”→“L”→“H”
(Shift to standby mode)
・Pin
NSLP
“L”→“H”
(Shift to normal mode)
The above-mentioned wake-up events shift the mode when a state remains for a given period of time (t
NWAKE
, t
BUS
,
t
gotonorm
). Hereinafter, a wake-up event on pin NWAKE is defined as Local wake-up, and a wake-up event on pin LIN is
defined as Remote wake-up.
2. Standby mode
When a wake-up event occurs on pin NWAKE or pin LIN in sleep mode, BD41030FJ-C shifts to standby mode.
In standby mode, pins become the following state:
・Pin
INH
“H”
(≒V
BAT
voltage)
・Pin
RXD
“L”
(Informs the microcontroller of being in standby mode.)
・Pin
LIN Slave resistor ON
BD41030FJ-C shifts from standby mode to normal mode when pin NSLP input switches to “H”.
3. Normal mode
BD41030FJ-C shifts to normal mode when pin NSLP switches to “H” in sleep mode or standby mode. In normal mode,
data can be transmitted or received through the bus line. When receiving data, the transceiver informs a LIN bus input
from pin RXD to the microcontroller. When transmitting data, the transceiver converts a TXD input signal to a
slew-rate-controlled LIN bus signal and informs the bus line of the converted signal. The maximum operating frequency
in this mode is 10 kHz.
From this mode, BD41030FJ-C shifts to sleep mode when pin NSLP input switches to “L” and this state remains for a
given period of time (t
gotosleep
).
Figure 4. State Transition Chart
Table 2. The state of the pin in each mode
MODE
Sleep mode
Standby mode
Normal mode
NSLP
L
L
H
TXD
pull-down
pull-down
pull-down
RXD
Hi-z
L
H：recessive state
L：dominant state
INH
Hi-z
H
H
TRANSMITTER
OFF
OFF
ON
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Datasheet
4. TXD dominant time-out counters Fail-safe function
A TXD dominant time-out counter prevents the bus line from being driven to a permanent dominant state (blocking all
network communication) in case pin TXD input is forced permanently low by a hardware and/or software application
failure. The timer is trigged by a negative edge on pin TXD and in case the value exceeds the internal timer value (t
dom
),
the transmitter becomes disabled and drives the bus line into a recessive state. The timer is reset by a positive edge on
pin TXD input.
5. Fail-safe function
・Pin
TXD provides a pull-down to GND in order to force a predefined level on input pin TXD in case the pin TXD is not
connected.
・Pin
NSLP provides a pull-down to GND in order to force the transceiver into sleep mode in case the pin NSLP is not
connected.
・Pin
RXD is “Hi-z” in case of lost power supply on pin V
BAT
.
・The
output driver at pin LIN will be off when junction temperature exceeds T
J
activating the TSD circuit without relation
to input signal at pin TXD. However, when junction temperature drops below T
J
the output driver at pin LIN will depend
again on the input signal at pin TXD.
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