TCAN1042-Q1 Datasheet, PDF (24/32 Pages) Texas Instruments – Automotive Fault Protected CAN Tranceiver

TCAN1042-Q1, TCAN1042V-Q1, TCAN1042H-Q1
TCAN1042HV-Q1, TCAN1042G-Q1, TCAN1042GV-Q1
TCAN1042HG-Q1, TCAN1042HGV-Q1
SLLSES9 – FEBRUARY 2016
Typical Applicationspurposes. Typical (continued)
10.2.3 Application Curves
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4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5
V_CC (V)
D005
V_CC = 4.5 V to 5.5 V
V_IO = 3.3 V
C_L = Open
Temp = 25°C
Figure 19. I_CC Dominant Current over V_CC Supply Voltage
11 Power Supply Requirements
R_L = 60 Ω
STB = 0 V
These devices are designed to operate from main V_CC input voltage supply range between 4.5 V and 5.5 V.
Some devices have an output level shifting supply input, V_IO, designed for a range between 3.0 V and 5.5 V.
Both supply inputs must be well regulated. A bulk capacitance, typically 4.7 μF, should be placed near the CAN
transceiver's main V_CC supply terminal in addition to bypass capacitors. A bulk capacitance, typically 1 μF,
should be placed near the CAN transceiver's V_IO supply terminal in addition to bypass capacitors.
12 Layout
In order for the PCB design to be successful, start with design of the protection and filtering circuitry. Because
ESD and transients have a wide frequency bandwidth from approximately 3 MHz to 3 GHz, high frequency layout
techniques must be applied during PCB design. The TCAN1042 family comes with high on chip IEC ESD
protection but if higher levels of system level immunity are desired, external TVS diodes can be used. TVS
diodes and bus filtering capacitors should be placed as close to the on board connectors as possible to prevents
noisy transient events from propagating further into the PCB and system.
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Product Folder Links: TCAN1042-Q1 TCAN1042V-Q1 TCAN1042H-Q1 TCAN1042HV-Q1 TCAN1042G-Q1
TCAN1042GV-Q1 TCAN1042HG-Q1 TCAN1042HGV-Q1