Data Sheet, Rev. 3.1, Aug. 2007
TLE6251DS
High Speed CAN-Transceiver with Bus wake-up
Automotive Power
Edition 2007-08-20
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2005 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
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Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
Type Package
TLE6251DS PG-DSO-8
High Speed CAN-Transceiver with Bus wake-up
TLE6251DS
Data Sheet 3 Rev. 3.1, 2007-08-20
Features
• CAN data transmission rate up to 1 Mbaud
• Compatible to ISO/DIS 11898
• Supports 12 V and 24 V automotive applications
• Low power mode with remote wake-up via CAN bus
• Wake signaling by RxD change
• No BUS load in stand-by mode
• Wide common mode range for electromagnetic immunity
(EMI)
• Digital inputs compatible to 3.3 and 5 V logic devices
• CAN short circuit proof to ground, battery and VCC
• Split termination to stabilize the recessive level
• TxD time-out function
• Overtemperature protection
• Protected against automotive transients
• Green Product (RoHS compliant)
• AEC Qualified
Description
The CAN-transceiver TLE6251DS is a monolithic integrated circuit in a PG-DSO-8 package for
high speed differential mode data transmission (up to 1 Mbaud) and reception in automotive and
industrial applications. It works as an interface between the CAN protocol controller and the
physical bus lines compatible to ISO/DIS 11898.
As a successor to the first generation of HS CAN (TLE6250), the TLE6251DS is designed to
provide an excellent passive behavior when the transceiver is switched off (mixed networks,
terminal 15/30 applications) and a remote wake-up capability via CAN bus in low power mode.
This supports networks with partially un-powered nodes.
The TLE6251DS has two operation modes, the normal and the stand-by mode. These modes can
be chosen by the STB pin. If the TLE6251DS is in stand-by mode and a message on the bus is
Data Sheet 4 Rev. 3.1, 2007-08-20
TLE6251DS
detected, the TLE6251DS changes the level at the RxD pin corresponding to the bus signal
(wake-up flag).
The TLE6251DS is also designed to withstand the severe conditions of automotive applications
and to support 12 V and 24 V applications.
The IC is based on the Smart Power Technology SPT® which allows bipolar and CMOS control
circuitry in accordance with DMOS power devices existing on the same monolithic circuit.
Pin Configuration and Definitions
Figure 1 Pin Configuration (top view)
Table 1 Pin Definitions and Functions
Pin No. Symbol Function
1TxDCAN transmit data input; 20 kΩ pull-up, LOW in dominant state
2GNDGround
3VCC 5 V supply input; block to GND with 100 nF ceramic capacitor
4RxDCAN receive data output; LOW in dominant state
5SPLITSplit termination output; to support the recessive voltage level of the
bus lines
6 CANL Low line input; LOW in dominant state
7 CANH High line output; HIGH in dominant state
8STBMode control input; internal pull-up, see Figure 3
AEP03389.VSD
1TxD
2
GND
3
V
CC
4RxD
8
7
6
5
CANH
CANL
STB
SPLIT
TLE6251DS
TLE6251DS
Data Sheet 5 Rev. 3.1, 2007-08-20
Functional Block Diagram
Figure 2 Functional Block Diagram
TLE6251DS
Mode Control
Logic
Output
Stage
AEB03388.VSD
8
RxD
4
=
Driver
Temp.-
Protection
+
timeout
TxD
1
STB
Wake-Up
Logic
7
CANH
6
CANL
3
VCC
MUX
Receiver
VCC
5
SPLIT
2
GND
Data Sheet 6 Rev. 3.1, 2007-08-20
TLE6251DS
Application Information
The TLE6251DS has two operation modes, the normal and the standby mode. These modes can
be controlled with the STB pin (see Figure 3, Table 2). The STB pin has an implemented pull-
up, so if there is no signal applied to STB or STB = HIGH, the standby mode is activated. To
transfer the TLE6251DS into the normal mode, STB has to be switched to LOW.
Figure 3 Mode State Diagram
Normal Mode
This mode is designed for the normal data transmission/reception within the HS-CAN network.
Table 2 Truth Table
Mode STB Event RxD BUS
Termination
Normal low bus dominant low VCC/2
bus recessive high
Stand by high wake-up via CAN bus detected low/high1)
1) Signal at RxD changes corresponding to the bus signal during stand by mode. See Figure 6
GND
no wake-up detected high
AEA03391.VSD
STB = 0
Normal
STB = 1
Stand-By
TLE6251DS
Data Sheet 7 Rev. 3.1, 2007-08-20
Transmission
The signal from the µC is applied to the TxD input of the TLE6251DS. Now the bus driver
switches the CANH/L output stages to transfer this input signal to the CAN bus lines.
TxD Time-out Feature
If the TxD signal is dominant for a time t > tTxD the TxD time-out function deactivates the
transmission of the signal at the bus. This is realized to prevent the bus from being blocked
permanently dominant due to an error.
The transmission is released again, after a rising edge at TxD has been detected.
Reduced Electromagnetic Emission
The bus driver has an implemented control to reduce the electromagnetic emission (EME). This
is achieved by controlling the symmetry of the slope, resp. of CANH and CANL.
Overtemperature
The driver stages are protected against overtemperature. Exceeding the shutdown temperature
results in deactivation of the driving stages at CANH/L. To avoid a bit failure after cooling down,
the signals can be transmitted again only after a dominant to recessive edge at TxD.
Figure 4 shows the way how the transmission stage is deactivated and activated again. First an
over temperature condition causes the transmission stage to deactivate. After the over
temperature condition is no longer present, the transmission is only possible after the TxD signal
has changed to recessive level.
Data Sheet 8 Rev. 3.1, 2007-08-20
TLE6251DS
Figure 4 Release of the Transmission after Overtemperature
Reception
The analog CAN bus signals are converted into a digital signal at RxD via the differential input
receiver. The RxD signal is switched to RxD output pin via the multiplexer (MUX), see Figure 2.
In normal mode the split pin is used to stabilize the recessive common mode signal.
Standby Mode
The standby mode is designed to switch the TLE6251DS into a low power mode with minimum
current consumption. The driving stages and the receiver are deactivated. Only the relevant
circuitry to guarantee a correct handling of the CAN bus wake-up is still active. This wake-up
receiver is also designed to show an excellent immunity against electromagnetic noise (EMI).
Change into Standby Mode during CAN Bus Failure
It is possible to change from normal mode into the standby mode if the bus is dominant due to a
bus failure without setting the RxD wake flag to LOW. The advantage is, that the TLE6251DS
can be kept in the standby mode even if a bus failure occurs.
Figure 5 shows this mechanism in detail. During a bus network failure, the bus might be
dominant. Normal communication is not possible until the failure is removed. To reduce the
current consumption, it makes sense to switch over to standby mode. This is possible with the
t
Failure
Overtemp
VCC
Overtemperature
GND
t
TxD
VCC
GND
AET03394.VSD
t
DRR
BUS VDIFF
(CANH-CANL)
TLE6251DS
Data Sheet 9 Rev. 3.1, 2007-08-20
TLE6251DS. If the dominant signal switches back to recessive level, e.g. failure removed, a
wake-up via CAN bus (recessive to dominant signal detected) is possible.
Figure 5 Go-To Standby Mode during Bus Dominant Condition
Wake-up via CAN Message
During standby mode, a dominant CAN message on the bus longer than the filtering time t > tWU1,
leads to the activation of the wake-up. The wake-up during standby mode is signaled with the
RxD output pin. A dominant signal longer t > tWU1 on the CAN bus switches the RxD level to
LOW, with a following recessive signal on the CAN bus longer t > tWU2 the RxD level is switched
to high, see Figure 6.
The µC is able to detect this change at RxD and switch the transceiver into the normal mode.
t
VCC
RxD
STB
(Mode)
t
RDD
AET03393.VSD
t
VCC
Normal Mode
(STB = LOW) Standby Mode (STB = HIGH)
tWU1
VCC
BUS VDIFF
(CANH-CANL)
tWU2
Data Sheet 10 Rev. 3.1, 2007-08-20
TLE6251DS
Figure 6 Wake-up behavior
Split Circuit
The split circuitry is activated during normal mode and deactivated (SPLIT pin floating) during
standby mode. The SPLIT pin is used to stabilize the recessive common mode signal in normal
mode. This is realized with a stabilized voltage of 0.5 VCC at SPLIT.
A correct application of the SPLIT pin is shown in Figure 7. The split termination for the left and
right node is realized with two 60 Ω resistances and one 10 nF capacitor. The center node in this
example is a stub node and the recommended value for the split resistances is 1.5 kΩ.
t
VCC/2
t
Recessive to
Dominant
CANH
CANL
VDIFF(d)
VDIFF(d)
tWU1
VCAN
VCC
BUS VDIFF
(CANH-CANL)
AET03395_TO1.VSD
t
VRxD
GND
VCC
0.2 x VCC
0.8 x VCC
VDIFF(d)
tWU2
VDIFF(d)
TLE6251DS
Data Sheet 11 Rev. 3.1, 2007-08-20
Figure 7 Application of the SPLIT Pin for Normal Nodes and one Stub Node
Other Features
Fail Safe
If the device is supplied but there is no signal at the digital inputs, the TxD and STB have an
internal pull-up path, to prevent the transceiver to switch into the normal mode or send a dominant
signal on the bus.
Un-supplied Node
The CANH/CANL pins remain high ohmic, if the transceiver is un-supplied.
AEA 03 3 90.VSD
Split
Termination
TLE6251 G/DS
CANH
CANL
SPLIT
10
nF
TLE6251 G/DS
CANH
CANL
SPLIT
60
Ω
60
Ω
Split
Termination
10
nF
SPLIT
TLE6251 G/DS
CANLCANH
10
nF
1.5
kΩ
1.5
kΩ
CAN
Bus
Split
Termination
at Stub
60
Ω
60
Ω
Data Sheet 12 Rev. 3.1, 2007-08-20
TLE6251DS
Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause
irreversible damage to the integrated circuit.
Table 3 Absolute Maximum Ratings
Parameter Symbol Limit Values Unit Remarks
Min. Max.
Voltages
Supply voltage VCC -0.3 5.5 V –
CAN bus voltage (CANH,
CANL)
VCANH/L -32 40 V –
CAN bus differential voltage
CANH, CANL, SPLIT
VCAN diff -40 40 V CANH - CANL < |40 V|
CANH - SPLIT < |40 V|
CANL - SPLIT < |40 V|
Input voltage at SPLIT VSPLIT -27 40 V –
Logic voltages at STB, TxD,
RxD
VI-0.3 VCC V0 V < VCC < 5.5 V
Electrostatic discharge
voltage at CANH, CANL,
SPLIT vs. GND
VESD -6 6 kV human body model
(100 pF via 1.5 kΩ)
Electrostatic discharge
voltage
VESD -2 2 kV human body model
(100 pF via 1.5 kΩ)
Temperatures
Storage temperature Tj-40 150 °C–
TLE6251DS
Data Sheet 13 Rev. 3.1, 2007-08-20
Table 4 Operating Range
Parameter Symbol Limit Values Unit Remarks
Min. Max.
Supply voltage VCC 4.75 5.25 V –
Junction temperature Tj-40 150 °C–
Thermal Resistances
Junction ambient Rthj-a –185K/W
1)
Thermal Shutdown (junction temperature)
Thermal shutdown temperature TjsD 150 190 °C–
Thermal shutdown hyst. ∆T–10K–
1) Calculation of the junction temperature Tj = Tamb + P × Rthj-a
Data Sheet 14 Rev. 3.1, 2007-08-20
TLE6251DS
Table 5 Electrical Characteristics
4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Parameter Symbol Limit Values Unit Remarks
Min. Typ. Max.
Current Consumption
Current consumption ICC – 6 10 mA recessive state;
VTxD = VCC
Current consumption ICC – 45 70 mA dominant state;
VTxD = 0 V
Current consumption ICC,stb –2030µA stand-by mode;
TxD = high
Receiver Output RxD
HIGH level output current IRD,H –-4-2mAVRD = 0.8 × VCC
–-100–µA stand-by mode
LOW level output current IRD,L 24–mAVRD = 0.2 × VCC
Short circuit current ISC,RxD –1520mA–
Transmission Input TxD
HIGH level input voltage
threshold
VTD,H 2.0 – – V recessive state
LOW level input voltage
threshold
VTD,L – – 0.8 V dominant state
TxD pull-up resistance RTD 10 20 40 kΩ–
TxD input hysteresis VTD hys – 200 – mV –
Stand By Input (pin STB)
HIGH level input voltage
threshold
VSTB,H 2.0 – – V normal mode
LOW level input voltage
threshold
VSTB,L – – 0.8 V receive-only mode
STB pull-up resistance RSTB 10 20 40 kΩ–
STB input hysteresis VSTB hys – 200 – mV –
TLE6251DS
Data Sheet 15 Rev. 3.1, 2007-08-20
Split Termination Output (pin SPLIT)
Split output voltage VSPLIT 0.3 ×
VCC
0.5 ×
VCC
0.7 ×
VCC
V normal mode;
-500 µA < ISPLIT <
500 µA
VSPLIT 0.45 ×
VCC
0.5 ×
VCC
0.55×
VCC
V normal mode;
no Load
Leakage current ISPLIT -5 0 5 µA standby mode;
-22 V < VSPLIT < 35 V
SPLIT output resistance RSPLIT – 600 – Ω–
Bus Receiver
Differential receiver
threshold voltage,
normal mode
Vdiff,rdN – 0.8 0.9 V recessive to dominant
Vdiff,drN 0.5 0.6 – V dominant to recessive
Differential receiver
threshold,
low power mode
Vdiff,rdLP 0.9 1.15 V recessive to dominant
Vdiff,drLP 0.4 0.8 V dominant to recessive
Common Mode Range CMR -12 – 12 V VCC = 5 V
Differential receiver
hysteresis
Vdiff,hys – 200 – mV –
CANH, CANL input
resistance
Ri10 20 30 kΩrecessive state
Differential input resistance Rdiff 20 40 60 kΩrecessive state
Bus Transmitter
CANL/CANH recessive
output voltage
VCANL/H 2.0 2.5 3.0 V VTxD = VCC;
no load
CANH, CANL recessive
output voltage difference
Vdiff -500 – 50 mV VTxD = VCC;
no load
CANL dominant output
voltage
VCANL 0.5 – 2.25 V VTxD = 0 V;
VCC = 5 V
CANH dominant output
voltage
VCANH 2.75 – 4.5 V VTxD = 0 V;
VCC = 5 V
Table 5 Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Parameter Symbol Limit Values Unit Remarks
Min. Typ. Max.
Data Sheet 16 Rev. 3.1, 2007-08-20
TLE6251DS
CANH, CANL dominant
output voltage difference
Vdiff = VCANH - VCANL
Vdiff 1.5 – 3.0 V VTxD = 0 V;
VCC = 5 V
CANL short circuit current ICANLsc 50 80 200 mA VCANLshort = 18 V
CANH short circuit current ICANHsc -200 -80 -50 mA VCANHshort = 0 V
Leakage current ICANH,L,lk ---5µAVCC = 0 V;
0 V < VCANH,L < 5 V
Dynamic CAN-Transceiver Characteristics
Propagation delay
TxD-to-RxD LOW
(recessive to dominant)
td(L),TR – 150 255 ns CL = 47 pF;
RL = 60 Ω;
VCC = 5 V;
CRxD = 15 pF
Propagation delay
TxD-to-RxD HIGH
(dominant to recessive)
td(H),TR – 150 255 ns CL = 47 pF;
RL = 60 Ω;
VCC = 5 V;
CRxD = 15 pF
Propagation delay
TxD LOW to bus dominant
td(L),T – 50 120 ns CL = 47 pF;
RL = 60 Ω;
VCC = 5 V
Propagation delay
TxD HIGH to bus recessive
td(H),T – 50 120 ns CL = 47 pF;
RL = 60 Ω;
VCC = 5 V
Propagation delay
bus dominant to RxD LOW
td(L),R – 100 135 ns CL = 47 pF;
RL = 60 Ω;
VCC = 5 V;
CRxD = 15 pF
Propagation delay
bus recessive to RxD HIGH
td(H),R – 100 135 ns CL = 47 pF;
RL = 60 Ω;
VCC = 5 V;
CRxD = 15 pF
Min. dominant time for bus
wake-up signal (RxD high
to low)
tWU1 0.75 3 5 µstWU1 = td(L),R + tWU
see Figure 6
Table 5 Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Parameter Symbol Limit Values Unit Remarks
Min. Typ. Max.
TLE6251DS
Data Sheet 17 Rev. 3.1, 2007-08-20
Min. recessive time for bus
wake-up signal (RxD low
to high)
tWU2 0.75 3 5 µstWU2 = td(H),R + tWU
see Figure 6
TxD permanent dominant
disable time
tTxD 0.3 – 1.0 ms –
Table 5 Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Parameter Symbol Limit Values Unit Remarks
Min. Typ. Max.
Data Sheet 18 Rev. 3.1, 2007-08-20
TLE6251DS
Diagrams
Figure 8 Test Circuits for Dynamic Characteristics
AEA03392.VSD
3
GND
2
4
8
1
5
100 nF
5 V
6CANL
7CANH
60 Ω
47 pF
15 pF
VCC
STB
TxD
SPLIT
RxD
TLE6251DS
Data Sheet 19 Rev. 3.1, 2007-08-20
Figure 9 Timing Diagrams for Dynamic Characteristics
AET02926
TxD
V
V
µ
C
GND
V
DIFF d(L), T
t
d(H), T
t
V
DIFF(d)
DIFF(r)
V
t
t
GND
C
µ
V
V
RxD
t
d(L), R
t
d(H), R
t
Cµ
V
0.8
0.2
Cµ
V
d(L), TR
t
d(H), TR
t
Data Sheet 20 Rev. 3.1, 2007-08-20
TLE6251DS
Application
Figure 10 Application Circuit
ECU
ECU
µP
with On Chip
CAN Module
e.g. C164C
C167 C
e.g. TLE 4476
(3.3/5 V) or
TLE 4471
TLE 4276
TLE 4271
e. g. TLE 4270
µP
with On Chip
CAN Module
e.g. C164C
C167 C
AEA 03387.VSD
GND
TLE6251 G
WK
9
GND
2
100
nF
100
nF
100
nF
10 k
Ω
CANH
13
1)
51 µH
CANL
12
V
S
SPLIT
11
INH
7
10
100
nF
GND
V
S
6
14
8
EN
NSTB
NERR
4
RxD
1
TxD
5
V
µC
3
V
CC
V
Q2
INH
V
I
+22
µF
+22
µF
5 V
100
nF
+
22
µF
V
Q1
STB
8
RxD 4
TxD 1
3
V
CC
TLE6251 DS
GND
2
CANH
7
1)
51 µH
CANL
6
SPLIT
5
V
Q
V
I
GND
GND
100
nF
100
nF
+22 µF
5 V
100
nF
+
22
µF
60
Ω
CAN
Bus
60
Ω
V
Bat
4.7 nF
1)
60
Ω
60
Ω
4.7 nF
1)
1) Optional, according to the car manufacturer requirements
TLE6251DS
Data Sheet 21 Rev. 3.1, 2007-08-20
Package Outlines
Figure 11 PG-DSO-8 (PG-DSO-8-16 Plastic Dual Small Outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be
compliant with government regulations the device is available as a green product. Green products
are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to
IPC/JEDEC J-STD-020).
+0.06
0.19
0.35 x 45˚
1)
-0.2
4
C
8 MAX.
0.64
±0.2
6
±0.25
0.2 8x
MC
1.27
+0.1
0.41 0.2 MA
-0.06
1.75 MAX.
(1.45)
±0.07
0.175
B
8x
B
2)
Index Marking
5-0.21)
41
85
A
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Lead width can be 0.61 max. in dambar area
GPS01181
0.1
You can find all of our packages, sorts of packing and others in our
Infineon Internet Page “Products”: http://www.infineon.com/products.
Dimensions in mm
SMD = Surface Mounted Device
Data Sheet 22 Rev. 3.1, 2007-08-20
TLE6251DS
Revision History
Version Date Changes
Rev. 3.1 2007-08-20 RoHS-compliant version of the TLE6251DS
• All pages: Infineon logo updated
• Page 3:
“added AEC qualified” and “RoHS” logo, “Green Product
(RoHS compliant)” and “AEC qualified” statement added to
feature list, package name changed to RoHS compliant
versions, package picture updated, ordering code removed
• Page 21:
Change package drawing to GPS01181
Package name changed to RoHS compliant versions, “Green
Product” description added
• added Revision History
• updated Legal Disclaimer
