Philips Semiconductors
Preliminary specification
High speed CAN transceiver
TJA1050
FEATURES
GENERAL DESCRIPTION
• Fully compatible with the “ISO 11898” standard
• High speed (up to 1 Mbaud)
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.
• Transmit Data (TXD) dominant time-out function
• Bus lines protected against transients in an automotive
environment
The TJA1050 is the successor to the PCA82C250 high
speed CAN transceiver. The most important
improvements are:
• Silent mode in which the transmitter is disabled
• Differential receiver with wide common-mode range for
high ElectroMagnetic Immunity (EMI)
• Much lower ElectroMagnetic Emission (EME) due to
optimal matching of the CANH and CANL output signals
• Input levels compatible with 3.3 V devices
• Thermally protected
• Improved behaviour in case of an unpowered node.
• 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
VCC
PARAMETER
supply voltage
CONDITIONS
MIN. MAX. UNIT
4.75
5.25
+40
V
V
VCANH
DC voltage at CANH
0 < VCC < 5.25 V; no time limit
−27
VCANL
DC voltage at CANL
Vi(dif)(bus)
tPD(TXD-RXD)
differential bus input voltage
dominant
VS = 0 V
1.5
3
V
propagation delay TXD to RXD;
see Fig.4
−
250
ns
Tamb
operating ambient temperature
−40
+125 °C
ORDERING INFORMATION
TYPE
PACKAGE
NUMBER
NAME
DESCRIPTION
VERSION
TJA1050T
TJA1050U
SO8
plastic small outline package; 8 leads; body width 3.9 mm
bare die
SOT96-1
−
−
1999 Sep 27
2
NXP [ NXP ]
