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부품번호 | TJA1042 기능 |
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기능 | High-speed CAN Transceiver | ||
제조업체 | NXP Semiconductors | ||
로고 | |||
전체 23 페이지수
TJA1042
High-speed CAN transceiver with Standby mode
Rev. 8 — 15 January 2015
Product data sheet
1. General description
The TJA1042 high-speed CAN transceiver 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 the differential transmit and receive capability to (a microcontroller with) a CAN
protocol controller.
The TJA1042 belongs to the third generation of high-speed CAN transceivers from NXP
Semiconductors, offering significant improvements over first- and second-generation
devices such as the TJA1040. It offers improved ElectroMagnetic Compatibility (EMC)
and ElectroStatic Discharge (ESD) performance, and also features:
• Ideal passive behavior to the CAN bus when the supply voltage is off
• A very low-current Standby mode with bus wake-up capability
• TJA1042T/3 and TJA1042TK/3 can be interfaced directly to microcontrollers with
supply voltages from 3 V to 5 V
The TJA1042 implements the CAN physical layer as defined in the current ISO11898
standard (ISO11898-2:2003, ISO11898-5:2007). Pending the release of the updated
version of ISO11898-2 including CAN FD, additional timing parameters defining loop
delay symmetry are specified. This implementation enables reliable communication in the
CAN FD fast phase at data rates up to 2 Mbit/s.
These features make the TJA1042 an excellent choice for all types of HS-CAN networks,
in nodes that require a low-power mode with wake-up capability via the CAN bus.
2. Features and benefits
2.1 General
Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant
Loop delay symmetry timing enables reliable communication at data rates up to
2 Mbit/s in the CAN FD fast phase
Suitable for 12 V and 24 V systems
Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
VIO input on TJA1042T/3 and TJA1042TK/3 allows for direct interfacing with 3 V to 5 V
microcontrollers
SPLIT voltage output on TJA1042T for stabilizing the recessive bus level
Available in SO8 package and leadless HVSON8 package (3.0 mm 3.0 mm) with
improved Automated Optical Inspection (AOI) capability
NXP Semiconductors
TJA1042
High-speed CAN transceiver with Standby mode
6. Pinning information
6.1 Pinning
7-$7
7-$7
7;'
*1'
9&&
5;'
67%
&$1+
&$1/
63/,7
DDD
7;'
*1'
9&&
5;'
67%
&$1+
&$1/
9,2
DDD
a. TJA1042T: SO8
Fig 2. Pin configuration diagrams
b. TJA1042T/3: SO8
terminal 1
index area
TXD
GND
VCC
RXD
TJA1042TK/3
18
27
36
45
STB
CANH
CANL
VIO
015aaa239
Transparent top view
c. TJA1042TK/3: HVSON8
6.2 Pin description
Table 3.
Symbol
TXD
GND
VCC
RXD
SPLIT
VIO
CANL
CANH
STB
Pin description
Pin Description
1 transmit data input
2[1] ground supply
3 supply voltage
4 receive data output; reads out data from the bus lines
5 common-mode stabilization output; in TJA1042T version only
5 supply voltage for I/O level adapter; in TJA1042T/3 and TJA1042TK/3 versions
only
6 LOW-level CAN bus line
7 HIGH-level CAN bus line
8 Standby mode control input
[1] For enhanced thermal and electrical performance, the exposed center pad of the HVSON8 package should
be soldered to board ground.
TJA1042
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
4 of 23
4페이지 NXP Semiconductors
TJA1042
High-speed CAN transceiver with Standby mode
VSPLIT = 0.5 VCC
in normal mode;
otherwise floating
VCC
TJA1042T
CANH
R 60 Ω
SPLIT
R 60 Ω
CANL
GND
015aaa020
Fig 3. Stabilization circuitry and application for version with SPLIT pin
7.3.2
VIO supply pin
Pin VIO on the TTJA1042T/3 and TJA1042TK/3 should be connected to the
microcontroller supply voltage (see Figure 7). This will adjust the signal levels of
pins TXD, RXD and STB to the I/O levels of the microcontroller. Pin VIO also provides the
internal supply voltage for the low-power differential receiver of the transceiver. For
applications running in low-power mode, this allows the bus lines to be monitored for
activity even if there is no supply voltage on pin VCC.
For versions of the TJA1042 without a VIO pin, the VIO input is internally connected to VCC.
This sets the signal levels of pins TXD, RXD and STB to levels compatible with 5 V
microcontrollers.
TJA1042
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
7 of 23
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부품번호 | 상세설명 및 기능 | 제조사 |
TJA1040 | High speed CAN transceiver | NXP Semiconductors |
TJA1040T | High speed CAN transceiver | NXP Semiconductors |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |