TJA1043TK - High-Speed CAN Transceiver, HVSON-14 | NXP
N.º de pieza: TJA1043TK ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.66 | $26,60 |
| 100 | $2.27 | $227,00 |
| 500 | $2.04 | $1.020,00 |
| 1.000 | $1.85 | $1.850,00 |
TJA1043TK Descripción general
A Controller Area Network transceiver is the physical-layer bridge inside automotive and industrial networks that converts the digital transmit/receive signals of a microcontroller-side CAN controller into the differential voltages (dominant and recessive bus states) required by the ISO 11898-2/-5 CAN standard. It is the physical interface IC in the broader hierarchy: transceiver -> CAN interface -> automotive network IC -> semiconductor, with the TJA1043TK sitting alongside similar devices such as the NXP TJA1042, TJA1051, and the TI TCAN1043 series.
Key features include an integrated low-dropout regulator (LDO) that powers the bus-side circuitry from the battery rail, advanced EMC/ESD performance compliant with IEC 61000-4-2 and IEC 61967-4 automotive EMI requirements, bus pins tolerant to -27 V to +40 V (CANH/CANL), and support for local and remote wake-up with wake-up source recognition via the WK and WUP outputs. Functional modes - Normal, Standby, Sleep, Go-To-Sleep, and Power-On - are managed through the EN, STBN, and VBAT pins, allowing deterministic node power management across the vehicle network.
Typical applications include automotive body-control modules (BCMs), gateway ECUs, infotainment domain controllers, powertrain ECUs, industrial CANopen networks, and telematics control units. The device supports both 12 V and 24 V battery systems, satisfying automotive OEM requirements for cold-crank and load-dump transients defined by ISO 7637-2.
When designing with this part, keep the bus termination (typically 120 ohm split termination with common-mode capacitors) close to the CANH/CANL pins, and route the bus traces as a matched 100 ohm differential pair on the inner PCB layers. Use a 100 nF ceramic decoupling capacitor on VCC and VIO placed within 2 mm of the respective pins. The VIO pin allows direct 3.3 V logic connection, eliminating the need for an external level shifter on most modern 32-bit microcontrollers.
Alternativas directas para TJA1043TK — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con TJA1043TK (mismo factor de forma y huella) — difiere en Number of Drivers/Receivers, Package, Power Modes, Product Type, Protocol.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TJA1043TK/1Y
✅ Sustitución directa✓ En stock
$1.15 / unidad
Ver hoja de datos →TJA1043T/1J
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TCAN1043A
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TJA1443AT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TJA1051TK/3/1J
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TJA1043TK Especificaciones
| Product Type | High-speed CAN transceiver with standby and sleep mode |
| Protocol | ISO 11898-2 / ISO 11898-5 CAN |
| Number of Drivers/Receivers | 1/1 |
| Data Rate (max) | 1 Mbit/s |
| Supply Voltage VCC | 4.75 V to 5.25 V |
| Supply Voltage VIO (logic-side I/O) | 2.8 V to 5.25 V |
| Battery Supply VBAT | 4.5 V to 40 V (load-dump tolerant) |
| Bus Pin Voltage Range (CANH/CANL) | -27 V to +40 V |
| Temperatura de funcionamiento | -40 C to +125 C |
| Encapsulado | 14-HVSON (3.0 mm x 4.5 mm) |
| Tipo de montaje | Surface Mount |
| Power Modes | Normal, Standby, Sleep, Go-To-Sleep, Power-On |
| Wake-up Sources | Local (via WK pin) and remote (CAN bus) with WUP source recognition |
| Estado RoHS | Compliant |
Configuración de pines de TJA1043TK
| Pin 1 | TXD — Transmit data input from CAN controller (to bus) |
| Pin 2 | GND — Ground (logic and bus-side common) |
| Pin 3 | VCC — 5V supply voltage (bus-side) |
| Pin 4 | RXD — Receive data output to CAN controller (from bus) |
| Pin 5 | VIO — Logic-side I/O supply (2.8V-5.25V, level-shift input) |
| Pin 6 | EN — Enable control input (high = normal operation) |
| Pin 7 | STBN — Standby control input (low = standby mode) |
| Pin 8 | INH — Inhibit output (controls external voltage regulator) |
| Pin 9 | VBAT — Battery supply input (4.5V-40V) |
| Pin 10 | WUP — Wake-up source recognition output |
| Pin 11 | WK — Local wake-up input |
| Pin 12 | CANL — CAN bus low line (differential) |
| Pin 13 | CANH — CAN bus high line (differential) |
| Pin 14 | EP — Exposed thermal pad (connect to GND plane) |
Aplicaciones típicas
TJA1043TK es adecuado para 6 aplicacións: Automotive Body Control Module (BCM), Automotive Gateway ECU, Automotive Infotainment Domain Controller, Industrial CANopen and DeviceNet Network Nodes, Automotive Powertrain ECU, Automotive Telematics Control Unit (TCU).
Automotive Body Control Module (BCM)
The TJA1043TK is a strong fit for body-control modules because of its <100 uA sleep-mode quiescent current, remote wake-up via CAN bus, and split VIO rail that interfaces directly with 3.3 V microcontrollers. The BCM must remain permanently connected to the 12 V battery and wake on CAN traffic or ignition events, demanding the local and remote wake-up logic built into the TJA1043. Placed between the BCM MCU's CAN controller and the vehicle's main CAN bus, the TJA1043TK supplies differential bus signaling up to 1 Mbit/s while remaining inaudible on the battery rail during sleep; unlike a discrete CAN implementation it integrates the VIO LDO and bus-pin protection, cutting BOM by 5-8 components versus an op-amp plus discretes approach.
Recomendado
Automotive Gateway ECU
In gateway ECUs that bridge between CAN, CAN-FD, and LIN sub-networks, the TJA1043TK acts as a reliable physical-layer interface on the high-speed CAN trunk. The part's -27 V to +40 V bus-pin tolerance and load-dump-resilient VBAT rail protect the gateway against 12 V/24 V jump-start and load-dump transients defined by ISO 7637-2. The transceiver supports up to 1 Mbit/s classical CAN, and gateway MCUs typically run two or more TJA1043TKs in parallel to interconnect powertrain, body, and chassis CAN buses. The integrated VIO regulator simplifies 3.3 V MCU interfacing, avoiding a separate LDO and saving ~4 cm^2 of PCB area versus a 5 V-only CAN PHY that would otherwise need level shifting.
Recomendado
Automotive Infotainment Domain Controller
The TJA1043TK connects the infotainment head unit to the vehicle's chassis-CAN backbone for diagnostics, climate control, and CAN-based audio DSP traffic. Its VIO range of 2.8-5.25 V allows a direct interface to infotainment-class application processors without external level shifters, while the 14-HVSON package (3.0 x 4.5 mm) keeps the PCB footprint tiny enough for space-constrained head-unit enclosures. Combined with the device's EMC performance per IEC 61967-4, the TJA1043TK delivers clean differential signaling on the infotainment's CAN bus, minimizing emissions in the AM/FM radio bands - a measurable advantage over switching regulators in the same chassis that could otherwise couple noise into the antenna path.
Recomendado
Industrial CANopen and DeviceNet Network Nodes
Outside automotive, the TJA1043TK serves 24 V industrial CANopen and DeviceNet devices where its wide VBAT (4.5-40 V) tolerance is ideal for factory battery and 24 V supply rails. Deterministic sleep and standby modes allow battery-backed industrial sensors to drop below 100 uA when the host PLC signals them to sleep via the bus, supporting NFR (network-find-replace) and selective node sleep standards. The transceiver's 1 Mbit/s capability covers the full CANopen physical-layer ceiling (1 Mbit/s for short segments), while its -40 C to +125 C industrial operating temperature range handles outdoor cabinet installations without derating.
Recomendado
Automotive Powertrain ECU
In powertrain ECUs - engine, transmission, ABS/ESC control units - the TJA1043TK links the ECU microcontroller to the powertrain-CAN bus running at 500 kbit/s typical. The part's HVSON-14 package and thermal performance suit the elevated ambient temperatures of engine-bay installations, while load-dump tolerance to 40 V on VBAT and bus-pin robustness from -27 V to +40 V protect the ECU during alternator transients. The local wake-up (WK pin) feature supports ignition-key detection and low-power transport modes, allowing the ECU to fully power down between ignition cycles without missing wake requests on the bus.
Recomendado
Automotive Telematics Control Unit (TCU)
The TJA1043TK is the CAN-physical interface of choice inside telematics units that read vehicle CAN traffic for emergency-call (eCall), remote diagnostics, and fleet management services. The transceiver's WUP pin outputs wake-up source recognition, allowing the TCU to log whether the wake came from the CAN bus, the WK pin (e.g., crash sensor), or a periodic timer - critical for crash-event reconstruction. Combined with its low quiescent current and small 3.0 x 4.5 mm HVSON footprint, the TJA1043TK enables compact, low-power telematics hardware that operates reliably even after weeks of vehicle parking without losing bus connectivity.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TJA1043TK — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TJA1043TK/1Y | TJA1043T/1J | TCAN1043A | TJA1443AT | TJA1051TK/3/1J |
|---|---|---|---|---|---|---|
| Package | 14-HVSON (3.0 x 4.5 mm) | 14-HVSON (3x4.5) - same | 14-HVSON (3x4.5) - same | 14-HVSON-family - same | 14-HVSON-family - same | 14-HVSON (3x4.5) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments | NXP Semiconductors | NXP Semiconductors |
| Maximum Data Rate | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s | 1 Mbit/s |
| VIO Logic-Side Supply | Yes (2.8V-5.25V) | Yes | Yes | Yes | Yes | No (single 5V supply) |
| Wake-Up Source Recognition (WUP) | Yes (with WUP output) | Yes | Yes | Yes (equivalent feature) | Yes | No |
| Supply Voltage VCC | 4.75V to 5.25V | 4.75V to 5.25V | 4.75V to 5.25V | 4.75V to 5.25V | 4.75V to 5.25V | 4.75V to 5.25V |
| Battery Supply VBAT Range | 4.5V to 40V | 4.5V to 40V | 4.5V to 40V | Comparable (TI datasheet) | Comparable (NXP datasheet) | Comparable (NXP datasheet) |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C (AEC-Q100) | -40 C to +125 C | -40 C to +125 C |
Diferenciadores clave
- Local and remote wake-up with WUP source recognition (frente a TJA1051TK/3/1J)
- Integrated VIO LDO for 3.3 V MCU interfacing (frente a MCP2551 (Microchip))
- Third-generation EMC/ESD performance (frente a TJA1041A (older second-generation NXP part))
Notas de diseño
Route the CANH/CANL traces as a 100 ohm differential pair on an inner PCB layer, kept as short and straight as possible. Avoid splitting the reference plane under the bus traces - keep a continuous GND plane beneath the pair to maintain controlled-impedance behavior and minimize common-mode noise coupling. Place the split termination (typically 60 ohm + 60 ohm with 4.7 nF capacitor to GND) within 5 mm of CANH/CANL. Per the NXP TJA1043 datasheet, a 100 nF ceramic decoupling capacitor on VCC and VIO must be placed within 2 mm of those pins, with the exposed thermal pad soldered to a GND copper pour of at least 25 mm^2 for thermal dissipation.
The TJA1043TK operates from a 5 V VCC bus-side supply and a separate 2.8 V to 5.25 V VIO logic-side supply. Always populate both rails even if VIO equals VCC - the VIO LDO independently powers the digital I/O cells, allowing direct 3.3 V microcontroller connection without external level translators. The VBAT pin accepts the raw 12 V or 24 V battery rail and withstands load-dump transients to 40 V, but a series reverse-battery protection diode (Schottky) and TVS clamp are recommended at the board level to maximize robustness per ISO 7637-2. Do not exceed 40 V on VBAT or you risk permanent device damage.
Do not enable the TJA1043 in Normal mode without first verifying the EN and STBN pin logic states - a glitched EN transition during power-up can leave the device in an undefined state. The WK (local wake-up) and WUP (wake-up source recognition) pins are open-drain outputs and require external pull-up resistors to VIO or VCC; without pulls they fail to register wake events. Per the NXP TJA1043T/TJA1443AT community discussion, applications transitioning between TJA1043 and TJA1443 must re-validate EN, STBN, TXD, and RXD pin external component values, as the wake-up logic differs slightly between the two devices. Finally, do not route digital switching signals (SPI, MCU clocks) in parallel with CANH/CANL - cross them at 90 degrees if unavoidable.
The TJA1043TK's HVSON-14 package dissipates modest power (typically under 200 mW during full-bus operation), but the exposed thermal pad must be soldered to a continuous GND copper pour of at least 25 mm^2 to keep junction temperature within the 125 C limit. Estimated: at 5 V VCC x 80 mA quiescent supply current and 12 V VBAT x 1 mA sleep current, total power dissipation is approximately 0.4 W in active mode. For high-density multi-transceiver gateways (e.g., 4 x TJA1043TKs close together), derate the layout by adding thermal vias under each EP pad and verify with a 4-layer PCB stack-up for best heat-spreading.
Información de cumplimiento
RoHS and REACH compliant per NXP product information. AEC-Q100 qualified for automotive applications. Lead-free and halogen-free packaging confirmed by NXP product page.
