TH8056
Enhanced Single Wire CAN Transceiver
Features
Fully compliant to GMW3089 V2.4 and J2411 Single Wire CAN specification for Class B
in-vehicle communications
Only 60 µA worst case sleep mode current independent from CAN voltage range
Operating voltage range 5V to 26.5V
Up to 40 kbps bus speed
Up to 100 kbps high-speed transmission mode
Logic inputs compatible with 3.3V and 5V supply systems
Control pin for external voltage regulators
Low RFI due to output wave shaping in normal and high voltage wake up mode
Fully integrated receiver filter
Bus terminals proof against short-circuits and transients in automotive environment
Loss of ground protection, very low leakage current (typ. 20µA at 26.5V and 125°C)
Protection against load dump, jump start
Thermal overload and short circuit protection
Under voltage lockout
Bus dominant time-out feature
Pb-Free 14-pin thermally enhanced and 8-pin SOIC package
Ordering Information
Part No.
TH8056 KDC A
TH8056 KDC A8
Temperature Range
-40 to 125 °C
-40 to 125 °C
Package
SOIC14
SOIC8
Revision
A
A
General Description
The TH8056 is a physical layer device for a single wire data link capable of operating with various CSMA/CR protocols
such as the Bosch Controller Area Network (CAN) version 2.0. This serial data link network is intended for use in
applications where a high data rate is not required and a lower data rate can achieve cost reductions in both the physical
media components and the microprocessor and/or dedicated logic devices that use the network.
The network shall be able to operate in either the normal data rate mode or the high-speed data download mode for
assembly line and service data transfer operations. The high-speed mode is only intended to be operational when the
bus is attached to an off-board service node. This node shall provide temporary bus electrical loads which facilitate
higher speed operation.
The bit rate for normal communications is typically 33.33kbit/s, for high-speed transmissions as described above a typical
bit rate of 83.33kbit/s is recommended. The TH8056 is designed in accordance with the Single Wire CAN Physical Layer
Specification GMW3089 V2.4 and supports many additional features like under-voltage lock-out, time-out for faulty
blocked
input signals, output blanking time in case of bus ringing and a very low sleep mode current.
TH8056 – Datasheet
3901008056
Page 1 of 26
March 2007
Rev 012
TH8056
Enhanced Single Wire CAN Transceiver
Contents
1.
2.
Functional Diagram ....................................................................................................3
Electrical Specification ..............................................................................................4
2.1
2.2
2.3
2.4
2.5
2.6
3.
Operating Conditions.............................................................................................4
Absolute Maximum Ratings ...................................................................................4
Static Characteristics.............................................................................................5
Dynamic Characteristics........................................................................................7
Bus loading requirements......................................................................................8
Timing Diagrams ...................................................................................................9
Functional Description.............................................................................................11
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
TxD Input pin .......................................................................................................11
Mode 0 and Mode 1 pins .....................................................................................11
RxD Output pin ....................................................................................................12
Bus LOAD pin......................................................................................................12
V
bat
INPUT pin....................................................................................................13
CAN BUS pin.......................................................................................................13
INH Pin (TH8056 KDC A8 only)...........................................................................13
State Diagram......................................................................................................14
Power Dissipation................................................................................................15
Application Circuitry.............................................................................................17
4.
5.
Pin Description .........................................................................................................18
Package Dimensions................................................................................................19
5.1
5.2
SOIC14................................................................................................................19
SOIC8..................................................................................................................20
6.
Tape and Reel Specification ....................................................................................21
6.1
6.2
Tape Specification ...............................................................................................21
Reel Specification for SOIC14NB ........................................................................22
7.
ESD/EMC Remarks ...................................................................................................23
7.1
7.2
7.3
7.4
General Remarks ................................................................................................23
ESD-Test .............................................................................................................23
EMC ....................................................................................................................23
Latch Up Test ......................................................................................................23
8.
9.
10.
Revision History .......................................................................................................24
Assembly Information ..............................................................................................25
Disclaimer..............................................................................................................26
TH8056 – Datasheet
3901008056
Page 2 of 26
March 2007
Rev 012
TH8056
Enhanced Single Wire CAN Transceiver
1. Functional Diagram
V
BAT
INH *
TH8056
5V Supply &
References
Biasing&
V
BAT
Monitor
Reverse
Current
Protection
RCOsc
Wave Shaping
TxD
CAN Driver
Time Out
CANH
Feedback-
Loop
Input
Filter
MODE0
MODE
CONTROL
LOAD
Receive
Comparator
Loss of
Ground
Detection
MODE1
Reverse
Current
Protection
Wake up filter
RxD
RxD Blanking
Time Filter
GND
Figure 1 - Block Diagram
* INH terminal is present on TH8056 KDC A only
TH8056 – Datasheet
3901008056
Page 3 of 26
March 2007
Rev 012
TH8056
Enhanced Single Wire CAN Transceiver
2. Electrical Specification
All voltages are referenced to ground (GND). Positive currents flow into the IC.
The absolute maximum ratings (in accordance with IEC 134) given in the table below are limiting values that
do not lead to a permanent damage of the device but exceeding any of these limits may do so. Long term
exposure to limiting values may affect the reliability of the device.
2.1 Operating Conditions
Parameter
Battery voltage
Operating ambient temperature for TH8056 KDC A
Junction temperature
Symbol
V
BAT
T
A
T
J
Min
5.0
-40
-40
Max
18
125
150
Unit
V
°C
°C
2.2 Absolute Maximum Ratings
Parameter
Supply Voltage
Short-term supply voltage
Transient supply voltage
Transient supply voltage
Transient supply voltage
CANH voltage
Transient bus voltage
Transient bus voltage
Transient bus voltage
DC voltage on pin LOAD
DC voltage on pins TxD, MODE1, MODE0,RxD,
ESD capability of any pin (Human Body Model)
Maximum latch – up free current at any Pin
Thermal impedance
[3]
Storage temperature
Junction temperature
[1]
Symbol
V
BAT
V
BAT.ld
V
BAT.tr1
V
BAT..tr2
V
BAT..tr3
V
CANH
V
CANH..tr1
V
CANH.tr2
V
CANH.tr3
V
LOAD
V
DC
ESD
HBM
I
LATCH
Θ
JA
T
stg
T
vj
Condition
Load dump; t<500ms
Jump start; t<1min
ISO 7637/1 pulse 1
[1]
ISO 7637/1 pulses 2
[1]
ISO 7637/1 pulses 3A, 3B
V
BAT
<= 26.5V
V
BAT
= 0
ISO 7637/1 pulse 1
[2]
ISO 7637/1 pulses 2
[2]
ISO 7637/1 pulses 3A, 3B
[2]
via R
T
> 2kΩ
Human body model,
equivalent to discharge
100pF with 1.5kΩ,
in free air, SOIC14
in free air, SOIC8
Min
-0.3
Max
18
40
26.5
100
200
40
40
100
200
40
7
2
500
70
150
150
150
Unit
V
V
V
V
V
V
V
V
V
V
V
kV
mA
K/W
°C
°C
-50
-200
-20
-40
-50
-200
-40
-0.3
-2
-500
-55
-40
ISO 7637 test pulses are applied to VBAT via a reverse polarity diode and >1uF blocking capacitor .
ISO 7637 test pulses are applied to CANH via a coupling capacitance of 1 nF.
[3]
The application board shall be realized with a ground copper foil area >150mm2 (low conductance board in accordance to
JEDEC51-7)
[2]
TH8056 – Datasheet
3901008056
Page 4 of 26
March 2007
Rev 012
TH8056
Enhanced Single Wire CAN Transceiver
2.3 Static Characteristics
Unless otherwise specified all values in the following tables are valid for V
BAT
= 5V to 26.5V and T
AMB
=-40°C
to 125
o
C. All voltages are referenced to ground (GND), positive currents flow into the IC.
Parameter
Operating supply voltage
Low battery operating supply voltage
Short duration Operating supply voltage
Under-voltage lock-out
Supply current, recessive, all active modes
Normal mode supply current, dominant
Symbol
V
BAT
V
BAT_L
V
BAT_JS
V
BATuv
I
BAT
I
BATN [2]
V
BAT
= 18V , TxD open
V
BAT
= 26.5V
MODE0=MODE1=H TxD=L,
R
load
= 200Ω
V
BAT
= 16V
MODE0=H,MODE1=L,TxD=L,
R
load
= 75Ω
V
BAT
= 26.5V
MODE0=L,MODE1=H, TxD=L,
R
load
= 200Ω
V
BAT
=13V, T
amb
< 85°C
PIN CANH
Bus output voltage, low battery
Bus output voltage
Bus output voltage, high-speed mode
Fixed Wake-up Output High Voltage
Offset Wake-up Output High Voltage
Recessive state output voltage
Bus short circuit current
Bus leakage current during loss of ground
Bus leakage current, bus positive
Bus input threshold
Bus input threshold low battery
Fixed Wake-up Input High Voltage
Threshold
Offset Wake-up Input High Voltage
Threshold
TH8056 – Datasheet
3901008056
V
oh_l
V
oh
V
oh
V
ohWuFix
V
ohWuOffset
V
ol
-I
CAN_SHORT
I
LKN_CAN[1]
I
LKP_CAN
V
ih
V
ihlb
V
i
hWuFix
[2]
R
L
> 200Ω,
Normal, high-speed mode,
5V < V
BAT
< 6V
R
L
> 200Ω, Normal mode,
6V < V
BAT
< 26.5V
R
L
> 75Ω, high-speed mode,
8V < V
BAT
< 16V
Wake-up mode, R
L
> 200Ω,
11.2V < V
BAT
< 26.5V
Wake-up mode, R
L
> 200Ω,
5V < V
BAT
< 11.2V
Recessive state or sleep mode,
R
load
= 6.5 kΩ,
V
CANH
= 0V, V
BAT
= 26.5V,
TxD = 0V
Loss of ground, V
CANH
= 0V
TxD high;
Normal, high-speed mode
Normal mode 5V<V
BAT
<6V
Sleep mode, V
BAT
> 11.2V
3.4
4.4
4.2
9.9
V
BAT
– 1.5
-0.2
50
-50
-10
2.0
1.6
6.6
V
BAT
-4.3
2.1
1.7
5.1
5.1
5.1
12.5
V
BAT
0.20
350
10
10
2.2
2.2
7.9
V
BAT
-3.25
V
V
V
V
V
V
mA
µA
µA
V
V
V
V
except high-speed/sleep mode
T<1min, T
amb
< 85°C
(except high-speed mode)
Condition
PIN VBAT
6
5
18
4.0
5
30
12
18
6
26.5
4.8
8
35
V
V
V
V
mA
mA
Min
Typ
Max
Unit
High-speed mode supply current, dominant
I
BATH [2]
60
75
mA
Wake-up mode supply current, dominant
Sleep mode supply current
I
BATW [2]
I
BATS
60
40
75
60
mA
µA
V
ihWuOffset
[2]
Sleep mode
Page 5 of 26
March 2007
Rev 012
Microcontroller MCU
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