Philips Semiconductors
Productspecification
CAN transceiver for 24 V systems
PCA82C251
100 nF
handbook, full pagewidth
+
5 V
V
CC
3
500 pF
500 pF
TXD
CANH
1
5
4
7
6
V
ref
SCHAFFNER
GENERATOR
PCA82C251
60 Ω
CANL
RXD
2
8
MBG619
GND
Rs
47 kΩ
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
R
ext
+
5 V
V
TXD
RXD
ref
Rs
V
CC
PCA82C251
CAN-TRANSCEIVER
100 nF
GND
CANH
CANL
CAN BUS
LINE
120 Ω
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: Rext = 0.
Fig.9 Application of the PCA82C251 CAN Transceiver.
2000 Jan 13
10
PHILIPS [ PHILIPS SEMICONDUCTORS ]
