TJA1042T - 1 Mbps High-Speed CAN Transceiver | NXP Semiconductors
MPN: TJA1042T ✗ סוף ייצורTJA1042T סקירה
חלופות תחליף ישיר עבור TJA1042T — 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 (אותו גורם צורה וטביעת רגל) — שונים ב Package, Product Type, Bus Interface, Operating Temperature, Protocol.
TJA1042CT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TJA1042T/1J
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←TJA1042T/3/1J
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←TJA1042BTK
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TCAN1042H
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TCAN1044A-Q1
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
TJA1042T מפרטים
| Product Type | High-speed CAN transceiver |
| Maximum CAN Data Rate | 1 Mbps |
| Bus Interface | Two-wire differential CAN bus |
| Controller Interface | TXD and RXD logic signals |
| Operating Feature | Standby mode |
| Application Sector | Automotive high-speed CAN |
| מארז | 8-pin SOIC |
| סוג הרכבה | Surface mount |
תצורת פינים של TJA1042T
| פין 1 | TXD — Transmitter data input from the CAN controller |
| פין 2 | RXD — Receiver data output to the CAN controller |
| פין 3 | VIO — Transceiver I/O supply connection |
| פין 4 | GND — Ground connection |
| פין 5 | SPLIT — Split-bus bias configuration connection |
| פין 6 | CANL — CAN low bus line |
| פין 7 | CANH — CAN high bus line |
| פין 8 | VCC — Transceiver supply connection |
יישומים טיפוסיים
TJA1042T מתאים עבור 6 יישוםs: Automotive Electronic Control Units, Body and Comfort Control Modules, Vehicle Diagnostic Interfaces, Industrial Vehicle CAN Networks, Embedded CAN Communication Modules, CAN-to-Ethernet and CAN-to-USB Gateways.
Automotive Electronic Control Units
The TJA1042T suits automotive electronic control units that communicate over a high-speed two-wire CAN network at up to 1 Mbps. It provides separate controller-facing TXD and RXD paths plus differential CANH and CANL bus signaling, allowing a microcontroller with an integrated or companion CAN controller to exchange messages with vehicle modules. Because the NXP data sheet identifies high-speed automotive CAN as a primary use case, existing vehicle platforms can use it where the exact electrical limits, temperature grade, transient immunity, and ESD ratings meet system requirements. PCB implementation should use a short coupled CANH/CANL pair, correct bus termination, and the manufacturer-prescribed SPLIT configuration. Qualification for a new automotive program must still verify the suffix-specific AEC-Q100 status, operating-temperature range, and production-life expectations.
מומלץ
Body and Comfort Control Modules
Body-control, door, lighting, climate, and seat modules commonly use CAN for distributed vehicle functions, making the TJA1042T appropriate for an existing 1 Mbps SOIC-8 design. The transceiver translates controller logic into differential bus activity and receives the bus state through RXD, allowing the host controller to participate in network communication without implementing the physical layer directly. Its 8-pin SOIC format supports conventional surface-mount PCB construction and reuse of established CAN routing and protection arrangements. Integration should account for standby-state behavior, bus-fault recovery, and controller wake-up requirements. Because the component is NRND, engineers maintaining a mature platform should confirm longevity and lot availability, while teams creating a new platform should compare current active transceivers before freezing the design.
מומלץ
Vehicle Diagnostic Interfaces
The TJA1042T can support a gateway, test interface, or diagnostic adapter that connects a host controller to a vehicle CAN network at rates up to 1 Mbps. Differential CANH and CANL signaling improves noise immunity relative to a single-ended implementation, while the dedicated TXD and RXD paths simplify connection to a CAN controller. A diagnostic design must verify whether the bus supports high-speed communication and whether standby, silent, or fault behavior meets the adapter operating sequence. Cable protection, common-mode choke selection, and connector surge requirements should be evaluated alongside the transceiver because the IC alone cannot solve external bus transients. For production continuity, procurement should track the NRND status and qualify the exact TJA1042T suffix rather than treating it as a new-design choice.
מומלץ
Industrial Vehicle CAN Networks
The TJA1042T is applicable to industrial vehicles and off-highway equipment where an embedded controller monitors or controls subsystems over CAN. Its 1 Mbps capability is useful for communication among powertrain controllers, operator panels, sensors, and remote modules, provided the physical network length, termination, and noise environment support that rate. The 8-pin SOIC package is convenient for compact controller boards, and the TJA1042T provides the physical interface while higher software layers remain in the host controller. Designers should confirm the exact operating-temperature limits and immunity specifications for harsh environments, then add appropriate transient protection at exposed connectors. The NRND lifecycle status makes long-term sourcing review particularly important for industrial programs with long service lives.
מומלץ
Embedded CAN Communication Modules
The TJA1042T can be used in embedded communications modules that add a physical CAN interface to a microcontroller or programmable controller. At up to 1 Mbps, the transceiver supports conventional high-speed CAN communication while separating controller logic from the differential physical bus. Its compact 8-pin SOIC package leaves board space for the controller, clocking, power conditioning, and communications isolation. Integration requires correct decoupling, defined controller I/O levels, a stable CAN reference network, and verification of the SPLIT connection against the selected suffix configuration. If the module also supports isolated communication, isolation components and their timing effects must be reviewed separately; the TJA1042T itself is the non-isolated bus interface. For new embedded platforms, current lifecycle status and availability should be checked before committing to the NRND part.
מומלץ
CAN-to-Ethernet and CAN-to-USB Gateways
A gateway can use the TJA1042T as the CAN-side physical interface while Ethernet or USB handles higher-level connectivity. The transceiver accepts TXD commands from the gateway controller and returns bus data on RXD, providing a clear separation between protocol software and the differential two-wire network. At a maximum 1 Mbps, it is appropriate for CAN segments whose physical characteristics and system timing have been validated. In a gateway, standby behavior should be coordinated with the network-management policy so that the bus receiver is not disabled unexpectedly. Layout must minimize the distance between the transceiver and bus connection, maintain coupled CAN traces, and provide termination only at intended network endpoints. Since the exact electrical and standby limits are not included in the supplied data, engineers should use the NXP data sheet as the final design authority.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור TJA1042T — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | TJA1042CT | TJA1042T/1J | TCAN1042H | TCAN1044A-Q1 |
|---|---|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments | Texas Instruments |
| Product Type | High-speed CAN transceiver | High-speed CAN transceiver | High-speed CAN transceiver | CAN transceiver | CAN transceiver |
מבדילים עיקריים
- Maintains an established 1 Mbps automotive CAN platform (לעומתTCAN1042H)
- Same-family SPLIT-capable option (לעומתTJA1042T/3)
- Established NXP package and interface organization (לעומתTCAN1044A-Q1)
הערות תכנון
Route CANH and CANL as a tightly coupled differential pair over a continuous reference plane. Match trace geometry, minimize stubs and layer changes, and place the transceiver close to the connector or protected bus interface. Reflections and impedance discontinuities can degrade signal integrity at the 1 Mbps maximum rate even when the transceiver itself operates correctly.
Do not substitute TJA1042 suffixes without checking pin 5. The TJA1042T and TJA1042CT use the SPLIT connection, while TJA1042T/3 uses VIO according to the verified NXP community result. Reusing the TJA1042T schematic with a VIO variant can move a bus-bias function to a supply input and cause incorrect operation or board damage.
Follow the NXP data sheet for VCC and VIO decoupling, grounding, and the permitted connection of the SPLIT pin. Do not assume that a controller operating from 3.3 V can drive TXD or read RXD correctly unless the selected suffix explicitly supports the required VIO voltage. Verify voltage domains, external bus bias components, and transceiver fault behavior against the exact ordering code.
The TJA1042T is NRND, so maintaining an existing design requires controlled procurement rather than opportunistic substitution. Record the approved manufacturer, exact suffix, package, temperature grade, and traceability requirements in the BOM. For new designs, compare active devices and perform a complete pin, voltage, timing, fault-mode, and lifecycle review before changing the transceiver.
מידע על תאימות
The supplied verified data does not extract specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for TJA1042T. Its automotive application description does not by itself establish AEC-Q100 qualification.