Philips Semiconductors
Preliminary specification
High speed CAN transceiver
BLOCK DIAGRAM
TJA1050
handbook, full pagewidth
VCC
3
60
µA
VCC
200
µA
GND
TEMPERATURE
PROTECTION
S
8
TXD
1
TXD
DOMINANT
TIME-OUT
TIMER
VCC
DRIVER
7
25
kΩ
0.5VCC
GND
6
CANH
RXD
4
RECEIVER
GND
5
REFERENCE
VOLTAGE
25
kΩ
CANL
Vref
TJA1050
2
MGS374
GND
Fig.1 Block diagram.
PINNING
SYMBOL
TXD
PIN
1
DESCRIPTION
transmit data input; reads in data
from the CAN controller to the bus
line drivers
ground
supply voltage
receive data output; reads out
data from the bus lines to the
CAN controller
reference voltage output
LOW-level CAN bus line
HIGH-level CAN bus line
select input for
high speed mode/silent mode
Fig.2 Pin configuration.
handbook, halfpage
GND
V
CC
RXD
2
3
4
TXD 1
GND 2
8 S
7
CANH
CANL
Vref
TJA1050T
VCC
RXD
3
4
MGS375
6
5
V
ref
CANL
CANH
S
5
6
7
8
1999 Sep 27
3
PHILIPS [ NXP SEMICONDUCTORS ]
