TJA1042T/3/1U - 5 Mbit/s CAN FD Transceiver | NXP
MPN: TJA1042T/3/1U ✗ סוף ייצורTJA1042T/3/1U סקירה
A CAN transceiver is the physical-layer interface within a Controller Area Network communication hierarchy. It converts logic-level TXD and RXD signals into balanced differential bus levels on CANH and CANL, while also providing bus dominance, recessive-state detection, and controller-side logic interfacing. The TJA1042 therefore belongs to the CAN physical-layer transceiver, interface IC, and automotive communication semiconductor categories.
The TJA1042T/3/1U supports data rates up to 5 Mbit/s, includes a low-power Standby mode, and provides improved electromagnetic compatibility and electrostatic-discharge performance. Its /3 variant is intended for direct interfacing with microcontrollers operating from supply voltages down to 3 V. Pin 5 provides the VIO function instead of the SPLIT function found on certain other TJA1042 variants, making the ordering-code distinction important during PCB design and replacement planning.
The transceiver integrates CAN bus driver and receiver functions with controller-facing logic inputs and outputs. VIO supports compatible microcontroller interfacing, while RXD reports the received bus state to the CAN controller. CANL and CANH provide the differential physical bus connection, and VCC supplies the transceiver. This integration allows a CAN controller to communicate over a robust two-wire bus without implementing the bus-line driver and receiver externally.
Typical uses include automotive body and comfort modules, powertrain controllers, electric-vehicle control units, diagnostic gateways, industrial CAN equipment, and CAN FD nodes. The 5 Mbit/s capability is particularly useful where the network carries larger payloads or enables CAN FD data-phase communication. Standby mode supports systems that need to retain low-power behavior while reducing activity when the node is not communicating.
When designing around the TJA1042T/3/1U, verify that the PCB footprint accommodates the 8-pin SOIC package and that the controller supply level matches the VIO arrangement of the /3 variant. CAN bus layouts should follow the routing and termination guidance in the manufacturer datasheet, including correct 120-ohm termination only at the physical ends of the bus.
This product overview combines the verified NXP family characteristics with application guidance, pin-role clarification, practical layout considerations, and qualified replacement comparisons. It is intended to help engineers distinguish the TJA1042T/3/1U from related SOIC-8 CAN transceivers whose logic, supply, standby, or bus-behavior details differ.
חלופות תחליף ישיר עבור TJA1042T/3/1U — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם TJA1042T/3/1U (אותו גורם צורה וטביעת רגל) — שונים ב Package, Product Type.
TJA1042T/3/1J
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←TJA1042T/3,118
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TCAN1042H
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TCAN1044A-Q1
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TJA1042T/3/1U מפרטים
| Product Type | High-speed CAN transceiver with Standby mode |
| Supported Data Rate | Up to 5 Mbit/s |
| Protocol Support | CAN and CAN FD |
| Number of Transceivers | 1 transceiver |
| Bus Interface | Two-wire differential CAN bus |
| Controller Interface | TXD and RXD signals |
| Microcontroller Supply Compatibility | Down to 3 V |
| Low-Power Mode | Standby mode |
| מארז | 8-pin SOIC |
| Terminal Count | 8 terminals |
| סגנון הרכבה | Surface mount, gull wing |
| Package Shape | Rectangular |
| Temperature Grade | Automotive |
| EMC Performance | Improved |
| ESD Performance | Improved |
תצורת פינים של TJA1042T/3/1U
| פין 1 | TXD — Transmit data input from the CAN controller |
| פין 2 | GND — Ground connection |
| פין 3 | NC — Not connected in the /3 device configuration |
| פין 4 | RXD — Receive data output to the CAN controller |
| פין 5 | VIO — Controller logic supply input for the /3 variant |
| פין 6 | CANL — CAN bus low terminal |
| פין 7 | CANH — CAN bus high terminal |
| פין 8 | VCC — Transceiver supply connection |
יישומים טיפוסיים
TJA1042T/3/1U מתאים עבור 6 יישוםs: Automotive Body Control Modules, Electric Vehicle Control Units, Powertrain and Chassis Network Interfaces, Industrial CAN FD Gateways, Vehicle Diagnostic Gateways, CAN-Based Sensor and Actuator Nodes.
Automotive Body Control Modules
The TJA1042T/3/1U fits automotive body-control and comfort modules that exchange control data over a CAN network. Its 5 Mbit/s capability supports CAN FD payload transfer, while Standby mode reduces activity when the module enters a low-power state. The 3 V-capable interface supports a controller operating at reduced logic voltage, and the automotive-grade ordering code suits vehicle environmental requirements. Designers should place the transceiver near the connector or bus junction, route CANH and CANL as a differential pair, and verify the controller protocol and sleep-wake behavior against the NXP manufacturer datasheet.
מומלץ
Electric Vehicle Control Units
The TJA1042T/3/1U is suitable for battery-management gateways, vehicle motion controllers, and electric-vehicle supervisory nodes connected to a CAN FD backbone. Data rates up to 5 Mbit/s accommodate modern vehicle networks carrying sensor data and control commands. Standby mode is useful for reducing transceiver activity during parked or low-duty operating periods, while VIO supports a 3 V-capable controller. Layout validation is essential because the /3 version assigns VIO to pin 5, and external termination must appear only at the two physical endpoints of the CAN network.
מומלץ
Powertrain and Chassis Network Interfaces
The TJA1042T/3/1U can connect a powertrain or chassis controller to a two-wire CAN network where fast communication and low-power standby behavior are required. Its 5 Mbit/s CAN FD capability supports efficient transfer of calibration, status, and diagnostic information. The 8-pin SOIC package is compact enough for controller boards, while the improved EMC and ESD characteristics address physically demanding vehicle environments. Use the manufacturer application guidance to select the bus-stabilization network, protection components, ground reference, and connector surge strategy.
מומלץ
Industrial CAN FD Gateways
The TJA1042T/3/1U can bridge a CAN FD-capable controller to industrial machinery, robot cells, or remote monitoring equipment. Its 5 Mbit/s maximum rate provides useful throughput for sensor aggregation and machine-control traffic, while Standby mode can assist systems that partially power down when inactive. The 3 V interface arrangement permits use with modern embedded controllers. Industrial implementations should add suitable transient protection, maintain a continuous return path beside CANH and CANL, and verify termination topology before connecting equipment from multiple vendors.
מומלץ
Vehicle Diagnostic Gateways
The TJA1042T/3/1U is appropriate for diagnostic gateways that translate between vehicle CAN domains and service or logging equipment. Supporting rates up to 5 Mbit/s allows the gateway to participate in CAN FD traffic, while Standby mode helps reduce activity during extended idle periods. The 3 V-capable interface supports direct connection to a compatible controller and can simplify the digital side of the design. Firmware must manage the /3 device's VIO behavior correctly, and the PCB must preserve the specified CAN differential routing and termination arrangement.
מומלץ
CAN-Based Sensor and Actuator Nodes
The TJA1042T/3/1U can connect distributed sensors, actuators, and small controllers to a CAN FD network in industrial or vehicle subsystems. The 5 Mbit/s bus rate allows the network to combine time-critical measurements with larger diagnostic records, and Standby mode supports low-duty nodes. A 3 V controller can use the VIO interface without an additional logic-level converter when all voltage and timing requirements are satisfied. Keep each bus stub short, place termination only at the network endpoints, and use the NXP pin and application diagrams as the basis for the final routing.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור TJA1042T/3/1U — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | TJA1042T/3/1J | TJA1042T/3,118 | TCAN1042H | TCAN1044A-Q1 |
|---|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments | Texas Instruments |
| Controller Interface | TXD and RXD with VIO support | TXD and RXD | TXD and RXD with VIO configuration | TXD and RXD | TXD and RXD |
מבדילים עיקריים
- Native 3 V-capable controller interface configuration (לעומתTJA1042T/1J)
- Documented compatibility with a 3 V MCU interface (לעומתTJA1042T/3/1U and TJA1042T/3/1J)
- Lower supply thresholds than TCAN1042H (לעומתTCAN1042H)
הערות תכנון
Route CANH and CANL as a short, tightly coupled differential pair with a continuous ground reference. Keep transceiver stubs short, place the device near the connector or bus branch, and use the NXP manufacturer datasheet layout as the routing baseline. Apply the specified termination network only at the two physical ends of the CAN bus, since incorrect or duplicated termination can reduce signal integrity and cause communication errors.
Validate VCC and VIO sequencing against the 3 V-capable /3 configuration before power-up. The /3 device uses VIO at pin 5 rather than the SPLIT function found on some other TJA1042 versions. Confirm controller and transceiver logic thresholds, supply ramp limits, and undervoltage behavior in the system power tree. Do not reuse a non-/3 schematic without reviewing the complete NXP pin-description table.
Do not treat an 8-pin SOIC footprint as proof of drop-in compatibility. Check pin 5, supply thresholds, Standby polarity, wake-up behavior, bus-fault protection, and maximum data rate before substituting another CAN transceiver. In particular, TCAN1042H has documented differences of 3.8 V versus 3.5 V for undervoltage detection and 3.0 V versus 2.8 V for minimum VIO.
Keep the CAN bus interface away from switching power loops and high-current return paths, while maintaining the ground reference needed by the transceiver. Place recommended protection and filtering components close to the connector, and avoid long unprotected traces outside the enclosure. Compliance with an EMC standard still requires system-level testing because cable length, topology, termination, and protective components can materially affect bus emissions and immunity.
מידע על תאימות
The device is identified as automotive grade, but no explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was identified. Verify these compliance statements against the current NXP product documentation before procurement.