1.General description
The TJA1145 is a high-speed CAN transceiver that provides an interface between a
Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. The transceiver is designed for high-speed CAN applications in the automotive industry, providing differential transmit and receive capability to (a microcontroller with) a CAN protocol controller.
The TJA1145 features very low power consumption in Standby and Sleep modes and supports ISO 11898-2:2016 compliant CAN Partial Networking by means of a selective wake-up function.
A dedicated implementation of the partial networking function has been embedded into the TJA1145/FD variants TJA1145T/FD and TJA1145TK/FD (see Section7.3.2 for further details on CAN FD). This function is called ‘FD-passive’ and is the ability to ignore CAN FD frames while waiting for a valid wake-up frame in Sleep/Standby mode. This additional feature of partial networking is the perfect fit for networks that support both CAN FD and standard CAN 2.0 communications. It allows normal CAN controllers that do not need to communicate CAN FD messages to remain in partial networking Sleep/Standby mode during CAN FD communication without generating bus errors.
Advanced power management regulates the supply throughout the node and supports local and remote wake-up functionality. I/O levels are automatically adjusted to the I/O levels of the controller, allowing the TJA1145 to interface directly with 3.3 V to 5 V microcontrollers. An SPI interface is provided for transceiver control and for retrieving status information. Bus connections are truly floating when power is off.
The TJA1145 implements the CAN physical layer as defined in ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-4. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 2 Mbit/s.
These features make the TJA1145 the ideal choice for high-speed CAN networks containing nodes that are always connected to the battery supply line but, in order to minimize current consumption, are only active when required by the application.
2.Features and benefits
2.1General
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ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-4 compliantTiming guaranteed for data rates up to 2Mbit/s
Autonomous bus biasing according to ISO 11898-2:2016Optimized for in-vehicle high-speed CAN communicationNo ‘false’ wake-ups due to CAN FD in TJA1145/FD variants
NXP Semiconductors
TJA1145
High-speed CAN transceiver for partial networking
2.2Designed for automotive applications
??8 kV ElectroStatic Discharge (ESD) protection, according to the Human Body Model
(HBM) on the CAN bus pins
??6 kV ESD protection, according to IEC 61000-4-2 on pins BAT and WAKE and on the
CAN bus pins
?CAN bus pins short-circuit proof to ?58 V
?Battery and CAN bus pins protected against transients according to ISO7637-3, test
pulses 1, 2a, 3a and 3b.
?Suitable for use in 12 V and 24 V systems
?Available in SO14 and leadless HVSON14 package (3 mm ? 4.5 mm) with improved
Automated Optical Inspection (AOI) capability?AEC-Q100 qualified
?Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
TJA1145
Product data sheetRev. 4 — 09 May 2018
TJA1145
High-speed CAN transceiver for partial networking
3.Quick reference data
Table 1.SymbolVBATVCCVIO
Quick reference dataParameter
battery supply voltagesupply voltage
supply voltage on pin VIO
VBAT fallingConditions
Min4.54.52.852.84.5
VBAT >4.5VNormal mode
Sleep mode; CAN Offline mode;
?40?C < Tvj<85?C; VBAT = 7V to 18VStandby mode; CAN Offline mode;
?40?C < Tvj<85?C; VBAT = 7V to 18V
ICC
supply current
CAN Active mode; CAN recessive; VTXD=VIOCAN Active mode; CAN dominant; VTXD=0VStandby/Normal mode; CAN inactive;?40?C < Tvj<85?C
Sleep mode; CAN inactive; ?40?C < Tvj<85?C
IIOVESDVCANHVCANLTvj
supply current on pin VIOelectrostatic discharge voltagevoltage on pin CANHvoltage on pin CANLvirtual junction temperature
Standby/Normal mode; ?40?C < Tvj<85?CSleep mode; ?40?C < Tvj<85?CIEC 61000-4-2 on pins CANH, CANL
2.7---------?6?58?58?40
TypMax------140443454.73.87.15----285.55.534.752.851.559686658.57118+6+58+58
UnitVVVV V VmA?A?AmAmA?A?A?A?AkVVV
Vth(det)poffpower-off detection threshold
voltageVuvd(VCC)undervoltage detection voltage
on pin VCCVuvd(VIO)IBAT
undervoltage detection voltage on pin VIO
battery supply current
+150?C
TJA1145
Product data sheetRev. 4 — 09 May 2018
TJA1145
High-speed CAN transceiver for partial networking
4.Ordering information
Table 2.
Ordering information
PackageName
TJA1145TTJA1145T/FDTJA1145TKTJA1145TK/FD
SO14SO14HVSON14HVSON14
Description
plastic small outline package; 14leads; body width 3.9mmplastic small outline package; 14leads; body width 3.9mmplastic thermal enhanced very thin small outline package; no leads;
14terminals; body 3 ? 4.5 ? 0.85 mm
plastic thermal enhanced very thin small outline package; no leads; 14terminals; body 3 ? 4.5 ? 0.85 mm
VersionSOT108-1SOT108-1SOT1086-2SOT1086-2
Type number
5.Block diagram
9&&??9,2??7-$??????????%$7????,1+,1+5;'7;'????+6??&$1????????&$1+&$1/3$57,$/??1(7:25.,1*&$1??)'??SDVVLYH??????:$.(??:$.(??836&.6',6'26&61????????????63,??*1'??????DDD??????(1)TJA1145T/FD and TJA1145TK/FD only.Fig 1.Block diagramTJA1145
Product data sheetRev. 4 — 09 May 2018
TJA1145
High-speed CAN transceiver for partial networking
6.Pinning information
6.1Pinning
7-$????????7??7-$????????7??)'7;'*1'9&&5;'9,26'2,1+????????????????????DDD??????WHUPLQDO????LQGH[??DUHD????6&61????&$1+????&$1/????6',????%$7????:$.(6&.7;'*1'9&&5;'9,26'2,1+??????????????7-$????????7.??7-$????????7.??)'????6&61????&$1+????&$1/????6',????%$7??????????DDD??????:$.(6&.Fig 2.Pin configuration diagram: SO14Fig 3.Pin configuration diagram: HVSON14Transparent top view6.2Pin description
Table 3.SymbolTXDGNDVCCRXDVIOSDOINHSCKWAKEBATSDICANLCANHSCSN
[1]
Pin description
Pin12[1]34567891011121314
Descriptiontransmit data inputground
5 V CAN transceiver supply voltage
receive data output; reads out data from the bus linessupply voltage for I/O level adaptorSPI data output
inhibit output for switching external voltage regulatorsSPI clock inputlocal wake-up inputbattery supply voltageSPI data input
LOW-level CAN bus lineHIGH-level CAN bus lineSPI chip select input
HVSON14 package die supply ground is connected to both the GND pin and the exposed center pad. TheGND pin must be soldered to board ground. For enhanced thermal and electrical performance, it isrecommended that the exposed center pad also be soldered to board ground
TJA1145
Product data sheetRev. 4 — 09 May 2018
MEMORY存储芯片TJA1145T - FDJ中文规格书 - 图文
