Philips Semiconductors
Preliminary specification
High speed CAN transceiver
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
•
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
SYMBOL
V
CC
V
CANH
V
CANL
V
i(dif)(bus)
t
PD(TXD-RXD)
T
amb
PARAMETER
supply voltage
DC voltage at CANH
DC voltage at CANL
differential bus input voltage
propagation delay TXD to RXD;
see Fig.4
operating ambient temperature
dominant
V
S
= 0 V
1.5
−
−40
0 < V
CC
< 5.25 V; no time limit
CONDITIONS
MIN.
4.75
−27
GENERAL DESCRIPTION
TJA1050
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 matching of the CANH and CANL output signals
•
Improved behaviour in case of an unpowered node.
MAX.
5.25
+40
3
250
+125
UNIT
V
V
V
ns
°C
ORDERING INFORMATION
TYPE
NUMBER
TJA1050T
TJA1050U
PACKAGE
NAME
SO8
−
bare die
DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mm
VERSION
SOT96-1
−
1999 Sep 27
2
PHILIPS [ NXP SEMICONDUCTORS ]
