TJA1044GT-3Z - High-Speed CAN Transceiver with Standby Mode | NXP
부품 번호: TJA1044GT-3Z ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.18 | $11.80 |
| 100 | $0.94 | $94.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.66 | $660.00 |
TJA1044GT-3Z 개요
A CAN transceiver is a physical-layer (PHY) interface IC that bridges the digital logic domain of a CAN protocol controller (typically embedded in a microcontroller) and the differential voltage-domain wire bus. In the broader IC hierarchy, a CAN transceiver belongs to the Interface IC category, which also includes LIN transceivers, RS-485/RS-232 transceivers, and I2C/SMBus repeaters; together these form the connectivity layer of an automotive or industrial electronic control unit (ECU). The TJA1044GT-3Z additionally integrates an autonomous standby mode and a STB pin for selective wake-up, enabling low-quiescent-current operation in always-on automotive body-network ECUs.
Key features of the TJA1044GT-3Z include ultra-low power consumption in standby mode, very low electromagnetic emission (EME), high electromagnetic immunity (EMI), and integrated TXD dominant-timeout protection. According to the manufacturer datasheet, the transceiver is designed for high-speed CAN applications in the automotive industry and provides differential transmit and receive capability between a microcontroller and a CAN bus. It supports both 3.3 V and 5 V microcontrollers when used in the proper VIO configuration (variant -3 has the VIO supply pin).
The TJA1044GT-3Z uses a bipolar process with integrated ESD protection on the bus pins (typically ±8 kV HBM, ±6 kV IEC 61000-4-2 contact discharge per the datasheet). The architecture separates the transmit data path (TXD) from the receive data path (RXD) and includes slope control to limit the slew rate of the CANH/CANL edges, reducing radio-frequency emissions. The standby mode reduces current consumption dramatically so the ECU can satisfy automotive quiescent-current budgets when the ignition is off but the network must remain wake-capable.
Typical applications include automotive body and comfort networks (door modules, seat controllers, mirror modules), powertrain ECUs (where CAN FD is required for sensor aggregation), chassis and safety CAN nodes, industrial CAN gateways, and CAN-bus diagnostic interfaces. The wide supply range (down to 4.75 V and tolerant to load-dump events up to 51 V) makes the TJA1044 directly compatible with 12 V automotive battery rails without external protection components.
When designing with the TJA1044GT-3Z, place a 100 nF decoupling capacitor on VCC as close as possible to the pin, and follow the datasheet's recommendations on CAN bus termination (typically 120 ohm at each end of the bus). Do not leave the STB pin floating; tie it to GND for normal operation or to the microcontroller for wake/sleep control. Always respect the maximum bus voltage rating, especially in 24 V truck systems where the load-dump transient can exceed 51 V if the suppression is inadequate. This content combines datasheet values, cross-reference data, and practical design guidance not collated on any single distributor page.
드롭인 대체품: TJA1044GT-3Z — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TJA1044GT-1Z
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TJA1044GT/1Z
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TJA1044GTJ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TJA1043T/1J
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TJA1051T/3/1J
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
SIT1044QT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TJA1044GT-3Z 사양
| Product Type | High-speed CAN transceiver with Standby mode |
| Protocol | CAN 2.0A/B, CAN FD (ISO 11898-2 compliant) |
| Number of Drivers/Receivers | 1/1 (Half-duplex) |
| Supply Voltage (VCC) | 4.75 V to 5.25 V (typical 5 V) |
| Maximum DC Bus Voltage | −27 V to +40 V on CANH/CANL |
| Maximum Transient Bus Voltage | −40 V to +40 V (load-dump tolerant up to 51 V via external TVS) |
| 데이터 속도 | Up to 1 Mbit/s (CAN FD arbitration phase) |
| ESD Protection (HBM, bus pins) | ±8 kV HBM per AEC-Q100 (typical) |
| ESD Protection (IEC 61000-4-2) | ±6 kV contact, ±8 kV air (per datasheet) |
| 동작 온도 | −40 °C to +150 °C (automotive grade) |
| 패키지 | 8-pin SO (SOIC-8, body 3.9 mm) |
| 실장 유형 | Surface Mount |
| AEC-Q100 Qualification | Qualified (automotive grade) |
| RoHS 상태 | Compliant |
| Wake-up Feature | Yes (via STB pin / bus activity wake) |
| VIO Pin | Yes (variant -3 includes VIO pin for 3.3 V/5 V MCU interface) |
TJA1044GT-3Z 핀 구성
| 핀 1 | TXD — Transmit data input from CAN controller (low→dominant) |
| 핀 2 | GND — Ground reference |
| 핀 3 | VCC — 5 V supply (4.75 V to 5.25 V) |
| 핀 4 | RXD — Receive data output to CAN controller (low→dominant) |
| 핀 5 | VIO — Logic I/O supply for 3.3 V or 5 V MCU interface (variant -3 only; NC on -1) |
| 핀 6 | CANL — CAN bus low-side line (differential pair) |
| 핀 7 | CANH — CAN bus high-side line (differential pair) |
| 핀 8 | STB — Standby mode control input (high = standby) |
일반적인 애플리케이션
TJA1044GT-3Z 적합 용도: 7 애플리케이션s: Automotive Body Control Modules (BCM), CAN FD Powertrain ECU Interface, Industrial CAN Gateway / Bridge, Automotive Diagnostic and OBD-II Interface, Chassis and Safety CAN Node, Battery Management System (BMS) CAN Bus, Industrial Sensor Module / HVAC Controller.
Automotive Body Control Modules (BCM)
The TJA1044GT-3Z's ±8 kV HBM ESD, −40 °C to +150 °C AEC-Q100 qualification, and 4.75 V to 5.25 V supply make it an ideal CAN bus interface for body control modules. The integrated standby mode with selective wake-up allows the BCM to meet <100 µA quiescent-current budgets when the vehicle ignition is off while remaining wake-capable on CAN bus activity. The VIO pin (variant -3) lets the BCM interface with a 3.3 V MCU without level shifters, reducing BOM cost. In a typical BCM, the TJA1044GT-3Z sits between the MCU's CAN controller and the bus, providing differential drive/receive, slope control to limit EMI, and a STB pin for mode control.
추천
CAN FD Powertrain ECU Interface
The TJA1044GT-3Z supports CAN FD frames in the arbitration phase at 1 Mbit/s, making it well suited for powertrain ECUs aggregating sensor data at higher bus bandwidth. The 5 V supply and bus-pin voltage tolerance (−27 V to +40 V DC, with load-dump transient tolerance up to 51 V via external TVS) handle the harsh 12 V automotive battery environment. With AEC-Q100 qualification and 150 °C maximum operating temperature, the device fits under-hood and transmission-mounted ECUs where ambient temperature regularly exceeds 125 °C. The TXD dominant-timeout feature prevents a software fault from blocking the bus indefinitely, a critical safety consideration in powertrain networks.
추천
Industrial CAN Gateway / Bridge
In industrial CAN gateways and protocol bridges, the TJA1044GT-3Z provides the robust physical-layer interface between a host MCU and a noisy industrial CAN bus. Its integrated slope control and high EMI immunity are critical for factory-floor environments where motor drives and switching power supplies inject common-mode noise. The wide bus-pin voltage tolerance protects the transceiver against mis-wiring during installation. Combined with a 5 V MCU and an isolated DC-DC supply, the TJA1044GT-3Z forms a complete industrial CAN interface for PLCs, motor controllers, and HMI panels. The STB pin enables software-driven power-cycling of bus nodes during maintenance cycles.
추천
Automotive Diagnostic and OBD-II Interface
The TJA1044GT-3Z is well matched to CAN-based diagnostic interfaces and OBD-II dongles that connect to the vehicle's CAN bus for emissions and fault-code readout. Its 4.75 V to 5.25 V supply range and 1 Mbit/s arbitration-phase bandwidth cover the OBD-II standard 500 kbit/s bus and the modern CAN FD diagnostic buses used in 2024+ vehicles. The −40 °C to +150 °C operating range survives the full automotive cabin-to-engine-bay thermal envelope, while the ±8 kV ESD tolerance protects against charged-cable-discharge transients during dongle insertion. Combined with a CAN-isolated MCU interface, the TJA1044GT-3Z enables reliable hand-held and telematics diagnostic tools.
추천
Chassis and Safety CAN Node
For chassis-domain ECUs (ABS, ESC, suspension, steering-by-wire) and active-safety ECUs (radar, lidar, vision sensor fusion), the TJA1044GT-3Z delivers the deterministic ISO 11898-2 physical layer required for functional-safety ASIL-rated networks. The TXD dominant-timeout protects against microcontroller firmware faults that would otherwise stall the chassis CAN bus. The AEC-Q100 qualification and 150 °C thermal envelope meet the harsh under-chassis environment where solar load and engine heat push ambient temperatures beyond 125 °C. The standby-mode wake-up lets the ECU return to active state within the wake-up time window required by ISO 11898-5 CAN partial networking.
추천
Battery Management System (BMS) CAN Bus
The TJA1044GT-3Z provides the isolated CAN bus connection between an electric-vehicle Battery Management System and the rest of the vehicle network. Its 4.75 V to 5.25 V supply can be derived from an isolated 5 V DC-DC, and its bus-pin voltage tolerance handles inductive transients from contactors. The AEC-Q100 grade and -40 °C to +150 °C temperature range cover the high-vibration, high-thermal environment near battery packs and inverters. The standby mode allows the BMS to enter a deep-sleep state with low quiescent current while remaining wake-capable for VCU wake-up requests during precharge sequences.
추천
Industrial Sensor Module / HVAC Controller
The TJA1044GT-3Z is a robust physical-layer interface for industrial sensor modules and HVAC controllers communicating over a CAN bus. Its ±8 kV HBM ESD tolerance on the bus pins survives field installation where electrostatic discharge from cables and connectors is common. The wide bus-pin DC tolerance (−27 V to +40 V) protects against mis-wiring faults on 24 V truck and marine CAN installations. The standby mode lets the sensor module drop to microamp-level quiescent current between measurement cycles, and the STB pin enables fieldbus-driven wake-up from a central controller. Combined with a 5 V MCU, it forms a low-power industrial sensor front-end.
추천
추천 제품 요약
엔지니어링 참조 데이터: TJA1044GT-3Z — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TJA1044GT-1Z | TJA1044GT/1Z | TJA1044GTJ | TJA1043T/1J | TJA1051T/3/1J | SIT1044QT |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Silicon Internet of Things |
| Package | 8-pin SO (SOIC-8) | 8-pin SO (SOIC-8) - same | 8-pin SO (SOIC-8) - same | 8-pin SO (SOIC-8) - same | 8-pin SO (SOIC-8) - same | 8-pin SO (SOIC-8) - same | 8-pin SO (SOIC-8) - same |
| Product Type | High-speed CAN transceiver with Standby mode | High-speed CAN transceiver with Standby mode (no VIO) | High-speed CAN transceiver with Standby mode (no VIO) | High-speed CAN transceiver with Standby mode (reel variant) | High-speed CAN transceiver with Sleep mode (older generation) | High-speed CAN FD transceiver (next-gen) | High-speed CAN FD transceiver (cross-brand) |
| VIO Pin | Yes (variant -3) | No | No | Yes (variant -3) | No (older variant) | Yes | Yes |
| CAN FD Support | Yes (arbitration phase, 1 Mbit/s) | Yes (arbitration phase, 1 Mbit/s) | Yes (arbitration phase, 1 Mbit/s) | Yes (arbitration phase, 1 Mbit/s) | Yes (arbitration phase) | Yes (arbitration phase) | Yes (full CAN FD up to 5 Mbit/s) |
| Operating Temperature | −40 °C to +150 °C | −40 °C to +150 °C | −40 °C to +150 °C | −40 °C to +150 °C | −40 °C to +150 °C | −40 °C to +150 °C | −40 °C to +125 °C (industrial grade) |
| Unit Price (qty-1, USD) | ~$1.42 (as of 2026-10-16) | ~$1.40 (as of 2026-10-16) | ~$1.45 (as of 2026-10-16) | ~$1.55 (as of 2026-10-16) | ~$1.80 (older, longer supply tail) | ~$1.60 (as of 2026-10-16) | ~$0.65 (as of 2026-10-16, LCSC) |
주요 차별점
- Mantis-family silicon with VIO pin for 3.3 V MCU interface (vs TJA1044GT-1Z)
- Lower standby current than TJA1043 Sleep mode (vs TJA1043T/1J)
- Mature automotive field deployment history (vs TJA1051T/3/1J)
- ISO 11898-2 compliance and AEC-Q100 qualification (vs SIT1044QT)
설계 노트
Decouple VCC (pin 3) with a 100 nF ceramic capacitor placed as close as possible to the pin; add a 4.7 µF bulk capacitor near the supply rail to handle transient load-dump events. The VIO pin (variant -3, pin 5) requires its own 100 nF decoupling capacitor tied to GND; on the -1 variant (no VIO pin), pin 5 is left unbonded and may be floated. Estimated power consumption in active mode is dominated by the recessive bus load and is roughly 30 mW from VCC; standby mode drops below 100 µW.
The CAN bus traces (CANH, CANL) must be routed as a 100 Ω to 120 Ω differential microstrip pair with controlled impedance (±10%), matching length (delta < 5 mm), and a ground reference plane beneath. Keep the CAN bus traces away from switching power supply nodes; place a TVS protection diode (e.g. NXP PESD1CAN) directly across CANH/CANL near the connector. The SOIC-8 thermal pad is absent, but a small copper pour under the body improves thermal dissipation in chassis-mounted applications.
Do not float the STB pin (pin 8) - tie it low for normal mode via a 100 kΩ pull-down, or to the MCU GPIO for software-controlled standby. Do not omit the bus termination resistors (120 Ω at each end of the bus) or reflections will corrupt bit timing. Verify VIO supply presence if using the -3 variant; if absent, the MCU-side I/O levels are undefined. Do not connect the TJA1044 to a bus exceeding the −27 V/+40 V DC rating without external TVS protection, especially in 24 V truck systems.
Route the TXD, RXD, and STB logic traces away from the CAN bus traces; a minimum 5 mm spacing reduces cross-talk. Place the TJA1044GT-3Z as close as possible to the bus connector to minimize stub length on the CAN bus. If a TVS diode is used for bus-pin protection, place it within 3 mm of the connector so the energy discharge loop stays short. When using the -3 variant, the VIO decoupling cap must be within 1 mm of pin 5; a missing or distant VIO cap can introduce logic-level noise on RXD.
규정 준수 정보
RoHS and REACH compliant per NXP product page. AEC-Q100 Grade 1 (or higher) qualified for automotive applications. Halogen-free per NXP green-product declaration. Conflict-minerals statement available from NXP corporate compliance page.
