Preliminary specification
File under Integrated Circuits, IC18
1999 Sep 27
Page 2
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
FEATURES
• Fully compatible with the
“ISO 11898”
standard
• High speed (up to 1 Mbaud)
• Transmit Data (TXD) dominant time-out function
• Bus lines protected against transients in an automotive
environment
• Silent mode in which the transmitter is disabled
• Differential receiver with wide common-mode range for
high ElectroMagnetic Immunity (EMI)
• Input levels compatible with 3.3 V devices
GENERAL DESCRIPTION
The TJA1050 is the interface between the CAN protocol
controller and the physical bus. The device provides
differential transmit capability to the bus and differential
receive capability to the CAN controller.
The TJA1050 is the successor to the PCA82C250 high
speed CAN transceiver. The most important
improvements are:
• Much lower ElectroMagnetic Emission (EME) due to
optimal matchingofthe CANH and CANL output signals
• Improved behaviour in case of an unpowered node.
• Thermally protected
• Short-circuit proof to battery and ground
• An unpowered node does not disturb the bus lines
• At least 110 nodes can be connected.
QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
CC
V
CANH
V
CANL
V
i(dif)(bus)
t
PD(TXD-RXD)
supply voltage4.755.25V
DC voltage at CANH0 < VCC< 5.25 V; no time limit−27+40V
DC voltage at CANL
differential bus input voltagedominant1.53V
propagation delay TXD to RXD;
VS=0V−250ns
see Fig.4
T
amb
operating ambient temperature−40+125°C
ORDERING INFORMATION
TYPE
NUMBER
NAMEDESCRIPTIONVERSION
PACKAGE
TJA1050TSO8plastic small outline package; 8 leads; body width 3.9 mmSOT96-1
TJA1050U−bare die−
1999 Sep 272
Page 3
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
BLOCK DIAGRAM
PINNING
handbook, full pagewidth
TXD
RXD
V
V
CC
0.5V
CC
GND
3
GND
2
25
kΩ
25
kΩ
MGS374
7
CANH
CANL
6
8
S
60 µA
V
CC
GND
200
µA
1
V
CC
4
GND
5
ref
TXD
DOMINANT
TIME-OUT
TIMER
REFERENCE
VOLTAGE
RECEIVER
TJA1050
TEMPERATURE
PROTECTION
DRIVER
Fig.1 Block diagram.
SYMBOLPINDESCRIPTION
TXD1transmit data input; reads in data
from the CAN controller to the bus
line drivers
GND2ground
V
CC
3supply voltage
RXD4receive data output; reads out
data from the bus lines to the
CAN controller
V
ref
5reference voltage output
CANL6LOW-level CAN bus line
CANH7HIGH-level CAN bus line
S8select input for
high speed mode/silent mode
handbook, halfpage
TXD
1
V
CC
RXD
2
TJA1050T
3
4
7
6
5
MGS375
Fig.2 Pin configuration.
8
S
CANHGND
CANL
V
ref
1999 Sep 273
Page 4
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
FUNCTIONAL DESCRIPTION
The TJA1050 is the interface between the CAN protocol
controller and the physical bus. It is primarily intended for
high speed automotive applications using baud rates from
40 kbaud up to 1 Mbaud. It provides differential transmit
capability to the bus and differential receiver capability to
the CAN protocol controller. It is fully compatible to the
“ISO 11898”
standard.
A current-limiting circuit protects the transmitter output
stage from damage caused by accidental short-circuit to
either positive or negative battery voltage, although power
dissipation increases during this fault condition.
Athermalprotection circuit protects theICfromdamage by
switching off the transmitter if the junction temperature
exceeds a value of approximately 165 °C. Because the
transmitter dissipates most of the power, the power
dissipation and temperature of the IC is reduced. All other
IC functions continue to operate. The transmitter off-state
resets when TXD goes HIGH. The thermal protection
circuit is particularly needed whena bus line short-circuits.
The CANH and CANL lines are protected fromautomotive
electrical transients (according to
“ISO 7637”
; see Fig.6)
and are also protected from Electro-Static-Discharge
(ESD) of up to 4 kV from the human body.
Control line S (pin 8) allows two operating modes to be
selected; high speed mode or silent mode.
High speed mode is the normal operating mode and is
selected by connecting pin S to ground. It is the default
mode if pin S is unconnected.
In the silent mode, the transmitter is disabled. All other IC
functions continue to operate. The silent mode is selected
by connecting pin S to VCC.
A ‘TXD Dominant Time-out’ timer circuit prevents the bus
linesbeing driven toa permanent dominantstate(blocking
all network communication) if TXD is forced permanently
LOW by a hardware and/or software application failure.
The timer is triggered by a negative edge on TXD. If the
duration of the LOW-level on TXD exceeds the internal
timer value, the transmitter isdisabled, drivingthe businto
a recessive state. The timer is reset by a positive edge on
TXD.
Table 1 Function table of the CAN transceiver
(X = don’t care)
V
CC
TXDSCANHCANLBUS STATE RXD
4.75 to 5.25 V00 (or floating)HIGHLOWdominant0
4.75 to 5.25 VX10.5 × V
4.75 to 5.25 V1 (or floating)X0.5 × V
CC
CC
<2 V (not powered)XX0 V <CANH< V
2V<V
< 4.75 V>2 VX0 V <CANH< V
CC
CC
CC
0.5 × V
CC
0.5 × V
CC
0 V <CANL< V
0 V <CANL< V
recessive1
recessive1
recessiveX
CC
recessiveX
CC
1999 Sep 274
Page 5
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134). All voltages are referenced to GND (pin 2).
Positive currents flow into the IC.
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
CC
V
CANL
V
TXD
V
and V
ref
V
trt(CANH)
V
trt(CANL)
V
esd
T
stg
T
amb
T
j
, V
, V
CANH
RXD
,
supply voltage−0.3+5.25V
DC voltage at CANL and CANH0 < VCC< 5.25 V;
−27+40V
no time limit
,
DC voltage at TXD, RXD, V
S
and S−0.3VCC+ 0.3 V
ref
transient voltage at CANH and CANLtime limit is 1 µs−55+55V
note 1−200+200V
electrostatic discharge at CANH; CANLnote 3−4+4kV
electrostatic discharge at TXD; V
RXD; V
and S
ref
CC
;
note 3−2+2kV
electrostatic discharge at all pinsnote 4−200+200V
storage temperature−55+150°C
operating ambient temperature−40+125°C
junction temperaturenote 2−40+150°C
Notes
1. The waveforms of the applied transients shall be in accordance with
“ISO 7637 part 1”
, test pulses 1, 2, 3a and 3b,
(see Fig.6).
2. In accordance with
“IEC 747-1”
. An alternative definition of Tjis: Tj=T
amb
+P×R
th(j-a)
, where R
is a fixed value
th(j-a)
to be used for the calculation of Tj. The rating for Tj limits the allowable combinations of power dissipation (P) and
ambient temperature (T
amb
).
3. Human body model; C = 100 pF R = 1.5 kΩ.
4. Machine model; C = 200 pF R = 25 Ω.
THERMAL CHARACTERISTICS
According to IEC 747-1.
SYMBOLPARAMETERCONDITIONSVALUEUNIT
R
th(j-a)
thermal resistance from junction to
in free air160K/W
ambient; TJA1050T(SO8)
QUALITY SPECIFICATION
Quality specification
“SNW-FQ-611 part D”
is applicable.
1999 Sep 275
Page 6
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
CHARACTERISTICS
VCC= 4.75 to 5.25 V; T
(pin 2); positive currents flow into the IC; all parameters are guaranteed over the ambient temperature range by design,
but only 100% tested at T
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
= −40 to +125 °C; RL=60Ωunless specified otherwise; all voltages are referenced to GND
delay TXD to bus activeVS= 0 Vtbftbf150ns
delay TXD to bus inactive
delay bus active to RXDtbftbf100ns
delay bus inactive to RXD
1999 Sep 277
Page 8
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
TEST AND APPLICATION INFORMATION
+
5 V
handbook, halfpage
TXD
V
RXD
15 pF
µF
100
47
nF
V
CC
ref
1
5
4
3
TJA1050
GND S
CANH
7
R
L
60 Ω
CANL
6
82
C
L
100 pF
handbook, full pagewidth
TXD
CANH
CANL
V
i(dif)(bus)
RXD
t
d(TXD-BUSon)
t
d(BUSon − RXD)
MGS376
Fig.3 Test circuit for timing characteristics.
0.9 V
(1)
0.5 V
0.3V
CC
0.7V
t
d(TXD-BUSoff)
HIGH
LOW
dominant
(BUS on)
recessive
(BUS off)
HIGH
CC
LOW
t
d(BUSoff − RXD)
(1) V
i(dif)(bus)
= V
CANH
− V
CANL
t
PD(TXD − RXD
)
Fig.4 Timing diagram for AC characteristics.
1999 Sep 278
t
PD(TXD − RXD
)
MGS377
Page 9
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
handbook, full pagewidth
handbook, full pagewidth
V
RXD
+
5 V
hysteresis
0.50.9
Fig.5 Hysteresis of the receiver.
100
47
nF
µF
V
CC
1
5
TJA1050
4
3
82
GND S
7
6
CANH
CANL
TXD
V
ref
RXD
15 pF
1 nF
1 nF
MGS378
HIGH
LOW
V
i(dif)(bus)
TRANSIENT
GENERATOR
MGS379
The waveforms of the applied transients shall be in accordance with
“ISO 7637 part 1”
Fig.6 Test circuit for automotive transients.
1999 Sep 279
, test pulses 1, 2, 3a and 3b.
Page 10
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
+
TX0
RX0
5 V
47
µF
TXD
V
ref
RXD
100
nF
1
5
4
V
CC
3
TJA1050
GND S
120 Ω
CANH
7
CAN
CANL
6
82
MGS380
BUS LINE
120 Ω
handbook, full pagewidth
SJA1000
CAN
CONTROLLER
Fig.7 Application information.
BONDING PAD LOCATIONS FOR TJA1050UTable 2 Bonding pad locations
All x/y coordinates represent the position of the centre of
each pad (in µm) with respect to x/y = 0 of the die (see
Fig.8).
SYMBOLPAD
8
andbook, halfpage
765
TXD1103103
GND2740.585
TJA1050U
test pad
V
CC
RXD41371.5111
V
ref
3886.5111
513941094
CANL610061111
x
0
0
1
y
234
MGS381
CANH7542.51111
S81031097
COORDINATES
xy
Fig.8 Bonding pad locations.
1999 Sep 2710
Page 11
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
PACKAGE OUTLINE
SO8: plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
y
Z
8
pin 1 index
1
D
c
5
A
2
A
1
4
e
w M
b
p
E
H
E
detail X
A
X
v M
A
Q
(A )
L
p
L
A
3
θ
02.55 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
mm
OUTLINE
VERSION
SOT96-1
A
max.
1.75
0.069
A1A2A
0.25
1.45
0.10
1.25
0.010
0.057
0.004
0.049
IEC JEDEC EIAJ
076E03S MS-012AA
0.25
0.01
b
3
p
0.49
0.25
0.36
0.19
0.019
0.0100
0.014
0.0075
UNIT
inches
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
(1)E(2)
cD
5.0
4.8
0.20
0.19
REFERENCES
4.0
3.8
0.16
0.15
1.27
0.050
1999 Sep 2711
eHELLpQZywv θ
1.05
1.0
0.4
0.039
0.016
0.7
0.6
0.028
0.024
0.250.10.25
0.010.010.0410.004
EUROPEAN
PROJECTION
6.2
5.8
0.244
0.228
(1)
0.7
0.3
0.028
0.012
ISSUE DATE
95-02-04
97-05-22
o
8
o
0
Page 12
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
SOLDERING
Introduction to soldering surface mount packages
Thistext gives averybriefinsight to acomplextechnology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
There is no soldering method that is ideal for all surface
mount IC packages.Wave soldering is not alwayssuitable
for surface mount ICs, or for printed-circuit boards with
high population densities. In these situations reflow
soldering is often used.
Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
tothe printed-circuit boardby screen printing,stencillingor
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
infrared/convection heating in a conveyor type oven.
Throughput times (preheating, soldering andcooling) vary
between 100 and 200 seconds depending on heating
method.
Typical reflow peak temperatures range from
215 to 250 °C. The top-surface temperature of the
packages should preferable be kept below 230 °C.
Wave soldering
Conventional single wave soldering is not recommended
forsurface mount devices (SMDs)orprinted-circuit boards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
If wave soldering is used the following conditions must be
observed for optimal results:
• Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
• For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint
longitudinal axis is preferred to be parallel to the
transport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis
must be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
• Forpackages with leads onfoursides, the footprint must
be placedat a 45° angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
During placement and before soldering,the packagemust
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Manual soldering
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300 °C.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320 °C.
1999 Sep 2712
Page 13
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
Suitability of surface mount IC packages for wave and reflow soldering methods
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the
Drypack information in the
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
The package footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable for SSOP andTSSOP packages with a pitch (e) equalto or larger than 0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
1999 Sep 2713
Page 14
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
BARE DIE DISCLAIMER
All die are tested and are guaranteed to comply with all data sheet limits up to the point of wafer sawing for a period of
ninety (90) days from the date of Philips' delivery. If there are data sheet limits not guaranteed, these will be separately
indicated in the data sheet. There is no post waffle pack testing performed on individual die. Although the most modern
processes are utilized for wafer sawing and die pick and place into waffle pack carriers, Philips Semiconductors has no
control of third party procedures in the handling, packing or assembly of the die. Accordingly, Philips Semiconductors
assumes no liability for device functionality or performance of the die or systems after handling, packing or assembly of
the die. It is the responsibility of the customer to test and qualify their application in which the die is used.
1999 Sep 2714
Page 15
Philips SemiconductorsPreliminary specification
High speed CAN transceiverTJA1050
NOTES
1999 Sep 2715
Page 16
Philips Semiconductors – a w orldwide compan y
Argentina: see South America
Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381, Fax. +1 800 943 0087
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 62 5344, Fax.+381 11 63 5777
For all other countries apply to: Philips Semiconductors,
International Marketing & Sales Communications, Building BE-p, P.O. Box 218,
5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
1999
Internet: http://www.semiconductors.philips.com
68
Printed in The Netherlands285002/01/pp16 Date of release: 1999 Sep 27Document order number: 9397 750 05732
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