Philips Semiconductors
Product specification
CAN transceiver for 24 V systems
PCA82C251
handbook, full pagewidth
100 nF
+
5 V
VCC
TXD
Vref
RXD
3
1
5
4
2
GND
8
Rs
47 kΩ
7
CANH
60
Ω
6
CANL
500 pF
MBG619
500 pF
SCHAFFNER
GENERATOR
PCA82C251
The waveforms of the applied transients shall be in accordance with
“ISO 7637 part 1”,
test pulses 1, 2, 3a and 3b.
Fig.8 Test circuit for automotive transients.
handbook, full pagewidth
P8xC592
CAN-CONTROLLER
CTX0 CRX0 CRX1 PX,Y
Rext
TXD
RXD
Vref
Rs
VCC
PCA82C251
CAN-TRANSCEIVER
100 nF
GND
+
5 V
CANH
120
Ω
CAN BUS
LINE
CANL
120
Ω
MBG620
(1) The output control register of the P8xC592 should be programmed to 1AH (push-pull operation, dominant = LOW).
(2) If no slope control is desired: R
ext
= 0.
Fig.9 Application of the PCA82C251 CAN Transceiver.
2000 Jan 13
10
PHILIPS [ NXP SEMICONDUCTORS ]
