Philips PCA82C250, PCA82C250U Datasheet
INTEGRATED CIRCUITS
DATA SH EET
PCA82C250
CAN controller interface
Product specification
Supersedes data of 1997 Oct 21
File under Integrated Circuits, IC18
2000 Jan 13
Philips Semiconductors Product specification
CAN controller interface PCA82C250
FEATURES
• Fully compatible with the
“ISO 11898”
standard
APPLICATIONS
• High-speed applications (up to 1 Mbaud) in cars.
• High speed (up to 1 Mbaud)
• Bus lines protected against transients in an automotive
environment
• Slope control to reduce Radio Frequency Interference
(RFI)
• Differential receiver with wide common-mode range for
GENERAL DESCRIPTION
The PCA82C250 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.
high immunity against ElectroMagnetic Interference
(EMI)
• Thermally protected
• Short-circuit proof to battery and ground
• Low-current standby mode
• An unpowered node does not disturb the bus lines
• At least 110 nodes can be connected.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
I
1/t
V
V
t
T
CC
CC
bit
CAN
diff
PD
amb
supply voltage 4.5 5.5 V
supply current standby mode − 170 µA
maximum transmission speed non-return-to-zero 1 − Mbaud
CANH, CANL input/output voltage −8 +18 V
differential bus voltage 1.5 3.0 V
propagation delay high-speed mode − 50 ns
ambient temperature −40 +125 °C
ORDERING INFORMATION
TYPE
NUMBER
NAME DESCRIPTION CODE
PACKAGE
PCA82C250 DIP8 plastic dual in-line package; 8 leads (300 mil) SOT97-1
PCA82C250T SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1
PCA82C250U − bare die; 2790 × 1780 × 380 µm −
2000 Jan 13 2
Philips Semiconductors Product specification
CAN controller interface PCA82C250
BLOCK DIAGRAM
handbook, full pagewidth
TXD
RXD
V
ref
Rs
1
8
4
5
SLOPE/
STANDBY
REFERENCE
VOLTAGE
V
CC
3
PROTECTION
DRIVER
HS
RECEIVER
PCA82C250
2
GND
Fig.1 Block diagram.
MKA669
7
CANH
6
CANL
PINNING
SYMBOL PIN DESCRIPTION
TXD 1 transmit data input
GND 2 ground
V
CC
3 supply voltage
RXD 4 receive data output
V
ref
5 reference voltage output
CANL 6 LOW-level CAN voltage
input/output
CANH 7 HIGH-level CAN voltage
input/output
Rs 8 slope resistor input
2000 Jan 13 3
handbook, halfpage
TXD
1
2
PCA82C250
3
V
CC
4
RXD
MKA670
Fig.2 Pin configuration.
8
7
6
5
Rs
CANHGND
CANL
V
ref
Philips Semiconductors Product specification
CAN controller interface PCA82C250
FUNCTIONAL DESCRIPTION
The PCA82C250 is the interface between the CAN
protocol controller and the physical bus. It is primarily
intended for high-speed applications (up to 1 Mbaud) in
cars. Thedevice provides differential transmit capability to
the bus and differential receive capability to the CAN
controller. It is fully compatible with the
“ISO 11898”
standard.
A current limiting circuit protects the transmitter output
stage againstshort-circuit to positive and negative battery
voltage. Although the power dissipation is increased
during this fault condition, this feature will prevent
destruction of the transmitter output stage.
If the junction temperature exceeds a value of
approximately 160 °C, the limiting current of both
transmitter outputs is decreased. Because the transmitter
is responsible for the major part of the power dissipation,
this will result in a reduced powerdissipation and hence a
lowerchip temperature.All otherparts of theIC willremain
in operation.The thermal protection is particularly needed
when a bus line is short-circuited.
The CANH and CANL lines are also protected against
electrical transients which may occur in an automotive
environment.
Pin 8 (Rs) allows three different modes of operation to be
selected: high-speed, slope control or standby.
For high-speed operation, the transmitter output
transistors are simply switched on and off as fast as
possible. In this mode, no measures are taken to limit the
rise and fall slope. Use of a shielded cable is
recommended to avoid RFI problems. The high-speed
mode is selected by connecting pin 8 to ground.
For lower speeds or shorter bus length, an unshielded
twisted pair or a parallel pair of wires can be used for the
bus. To reduce RFI, the rise and fall slope should be
limited. The rise and fall slope can be programmed with a
resistor connected from pin 8 to ground. The slope is
proportional to the current output at pin 8.
If a HIGH level is applied to pin 8, the circuit enters a low
current standby mode. In this mode, the transmitter is
switched off and the receiver is switched to a low current.
If dominant bits are detected (differential bus voltage
>0.9 V), RXD will be switched to a LOW level.
The microcontroller should react to this condition by
switching the transceiver back to normal operation (via
pin 8). Because the receiver is slow in standby mode, the
first message will be lost.
Table 1 Truth table of the CAN transceiver
SUPPLY TXD CANH CANL BUS STATE RXD
4.5 to 5.5 V 0 HIGH LOW dominant 0
4.5 to 5.5 V 1 (or floating) floating floating recessive 1
<2 V (not powered) X
2V<VCC< 4.5 V >0.75V
2V<VCC< 4.5 V X
(1)
(1)
CC
floating floating recessive X
floating floating recessive X
floating if
VRs> 0.75V
CC
floating if
VRs> 0.75V
recessive X
CC
Note
1. X = don’t care.
Table 2 Pin Rs summary
CONDITION FORCED AT PIN Rs MODE RESULTING VOLTAGE OR CURRENT AT PIN Rs
V
> 0.75V
Rs
−10 µA<I
VRs< 0.3V
CC
< −200 µA slope control 0.4VCC<VRs< 0.6V
Rs
CC
standby IRs< 10 µA
CC
high-speed IRs< −500 µA
(1)
(1)
(1)
2000 Jan 13 4
Philips Semiconductors Product specification
CAN controller interface PCA82C250
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134); all voltages are referenced to pin 2;
positive input current.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
CC
V
n
V
6, 7
V
trt
T
stg
T
amb
T
vj
V
esd
Notes
1. In accordance with
Tvj=T
amb+Pd×Rth(vj-a)
the allowable combinations of power dissipation (Pd) and ambient temperature (T
2. Classification A: human body model; C = 100 pF; R = 1500 Ω; V = ±2000 V.
3. Classification B: machine model; C = 200 pF; R = 25 Ω; V = ±200 V.
supply voltage −0.3 +9.0 V
DC voltage at pins 1, 4, 5 and 8 −0.3 VCC+ 0.3 V
DC voltage at pins 6 and 7 0 V < VCC< 5.5 V;
−8.0 +18.0 V
no time limit
transient voltage at pins 6 and 7 see Fig.8 −150 +100 V
storage temperature −55 +150 °C
ambient temperature −40 +125 °C
virtual junction temperature note 1 −40 +150 °C
electrostatic discharge voltage note 2 −2000 +2000 V
note 3 −200 +200 V
“IEC 60747-1”
, where R
. An alternative definition of virtual junction temperature is:
is a fixed value to be used for the calculation of Tvj. The rating for Tvj limits
th(j-a)
).
amb
THERMAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS VALUE UNIT
R
th(j-a)
thermal resistance from junction to ambient in free air
PCA82C250 100 K/W
PCA82C250T 160 K/W
QUALITY SPECIFICATION
According to
“SNW-FQ-611 part E”
.
2000 Jan 13 5
Philips Semiconductors Product specification
CAN controller interface PCA82C250
CHARACTERISTICS
VCC= 4.5 to 5.5 V; T
to ground (pin 2); positive input current; all parameters are guaranteed over the ambient temperature range by design,
but only 100% tested at +25 °C.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
I
3
supply current dominant; V1=1V −−70 mA
DC bus transmitter
V
V
I
IH
I
IL
V
I
LO
V
V
∆V
IH
IL
6,7
7
6
6, 7
HIGH-level input voltage output recessive 0.7V
LOW-level input voltage output dominant −0.3 − 0.3V
HIGH-level input current V1=4V −200 − +30 µA
LOW-level input current V1=1V −100 −−600 µA
recessive bus voltage V1= 4 V; no load 2.0 − 3.0 V
off-state output leakage current −2V<(V6,V7)<7V −2 − +1 mA
CANH output voltage V1= 1 V 2.75 − 4.5 V
CANL output voltage V1= 1 V 0.5 − 2.25 V
difference between output
voltage at pins 6 and 7
I
I
sc7
sc6
short-circuit CANH current V7= −5 V; VCC≤ 5V −−−105 mA
short-circuit CANL current V6=18V −−160 mA
DC bus receiver: V1= 4 V; pins 6 and 7 externally driven; −2V<(V6,V7) < 7 V; unless otherwise specified
= −40 to +125 °C; RL=60Ω; I8> −10 µA; unless otherwise specified; all voltages referenced
amb
recessive; V
=4V;
1
−−14 mA
R8=47kΩ
recessive; V
=4V;
1
−−18 mA
V8=1V
standby; T
amb
<90°C;
− 100 170 µA
note 1
− VCC+ 0.3 V
CC
CC
−5V<(V
)<18V −5 − +12 mA
6,V7
V1= 1 V 1.5 − 3.0 V
V
=1V; RL=45Ω;
1
1.5 −−V
VCC≥ 4.9 V
= 4 V; no load −500 − +50 mV
V
1
V
= −5 V; VCC= 5.5 V −−−120 mA
7
V
V
diff(r)
differential input voltage
(recessive)
−7V<(V
6,V7
not standby mode
V
diff(d)
differential input voltage
(dominant)
−7V<(V
6,V7
not standby mode
V
diff(hys)
V
OH
differential input hysteresis see Fig.5 − 150 − mV
HIGH-level output voltage
I4= −100 µA 0.8V
(pin 4)
V
OL
R
i
LOW-level output voltage (pin 4) I4=1mA 0 − 0.2V
=10mA 0 − 1.5 V
I
4
CANH, CANL input resistance 5 − 25 kΩ
2000 Jan 13 6
)<12V;
)<12V;
−1.0 − +0.5 V
−1.0 − +0.4 V
0.9 − 5.0 V
1.0 − 5.0 V
− V
CC
CC
CC
V
V
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