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NXP Semiconductors TJA1442AT/0Z
- Part No.:
- TJA1442AT/0Z
- Manufacturer:
- NXP Semiconductors
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TJA1442AT/0Z.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:935
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Product details
Overview
TJA1442AT/0Z from NXP Semiconductors is a high-speed CAN FD transceiver supporting data rates up to 5 Mbit/s, compliant with ISO 11898-2:2016 and SAE J2284-1–J2284-5. It operates in Normal, Standby, and Off modes, features VIO-supplied I/O level adaptation for 3.3 V/5 V microcontrollers, and is AEC-Q100 Grade 1 qualified for ambient temperatures up to 125 °C. It serves as a pin-compatible upgrade for legacy CAN transceivers in automotive body control modules.
For engineers reviewing the TJA1442AT/0Z datasheet, TJA1442AT/0Z pinout, TJA1442AT/0Z application, or TJA1442AT/0Z equivalent, this page delivers verified specifications, fail-safe undervoltage behavior, low-power wake-up timing (0.5–1.8 μs), bus fault protection (±40 V), and SO8 package compatibility - all critical for automotive ECU redesign and CAN FD migration projects.
Technical Context
The TJA1442AT/0Z implements the ISO 11898-2 physical layer with differential bus drivers and a low-power wake-up receiver powered by VIO, enabling bus monitoring while VCC is shut down. Its dual-supply architecture (VCC + VIO) decouples logic-level interfacing from main power, supporting mixed-voltage system integration.
It delivers predictable fail-safe operation via three-tier undervoltage detection: standby entry at VCC < 4.0–4.5 V, switch-off at VIO < 2.65–2.95 V, and hysteresis of 50 mV on both thresholds. The TXD dominant time-out function (tto(dom)) prevents bus lockup by forcing recessive state after sustained LOW input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V - ensures stable operation across automotive battery variations (cold crank to load dump). |
| Supply Voltage (VIO) | 2.95 V to 5.5 V - enables direct interface with 3.3 V or 5 V microcontrollers without level shifters. |
| Data Rate Support | Up to 5 Mbit/s - fully supports CAN FD fast phase for high-bandwidth diagnostics and firmware updates. |
| Standby Current | ≤2 μA - enables ultra-low-power sleep mode for always-on vehicle networks (e.g., door module wake-on-CAN). |
| Bus Fault Tolerance | ±40 V on CANH/CANL - withstands automotive transients per ISO 7637-2 Pulse 3b and IEC 61000-4-5. |
| ESD Robustness | ±8 kV HBM on CANH/CANL - meets stringent AEC-Q100 electrostatic discharge requirements. |
| Ambient Temp Range | −40 °C to +125 °C - qualified to AEC-Q100 Grade 1 for under-hood and chassis-mounted ECUs. |
Pinout & Package
Package: SO8 (SOT96-1), 3.9 mm body width, leaded plastic small outline package with GND-connected exposed pad for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TXD | Transmit Data Input | Digital input from CAN controller; internal 20–80 kΩ pull-up to VIO ensures defined HIGH state if left floating. |
| 2 - GND | Ground Reference | Main signal and power ground; must be soldered to PCB ground plane; exposed pad also connected to GND. |
| 3 - VCC | Main Supply Input | 5 V supply for bus drivers and internal logic; undervoltage detection triggers Standby mode below 4.0–4.5 V. |
| 4 - RXD | Receive Data Output | CMOS output to CAN controller; reflects bus state in Normal mode; follows wake-up pattern in Standby mode. |
| 5 - VIO | I/O Level Supply | Supplies TXD, RXD, STB logic levels and low-power wake-up receiver; enables VCC shutdown while retaining bus monitoring. |
| 6 - CANL | CAN Bus Low Line | Analog bidirectional bus terminal; differential pair with CANH; ±40 V fault-tolerant; 25–50 kΩ input resistance. |
| 7 - CANH | CAN Bus High Line | Analog bidirectional bus terminal; differential pair with CANL; symmetric output voltage (0.9–1.1×VCC) minimizes EME. |
| 8 - STB | Standby Mode Control | Active-HIGH digital input; internal pull-up to VIO ensures default Standby on power-up; filtered against spurious signals. |
Key Features
| Feature | Design Value |
|---|---|
| VIO-supplied I/O adaptation | Enables seamless interfacing with 3.3 V or 5 V microcontrollers without external level shifters or voltage dividers. |
| Sub-μA Standby current | ≤2 μA at Tvj < 85 °C allows multi-year battery operation in always-on vehicle networks (e.g., keyless entry gateways). |
| Configurable wake-up filter | 0.5–1.8 μs wake-up pattern recognition window meets both Classical CAN and CAN FD timing requirements per ISO 11898-2. |
| Dual undervoltage detection | Independent VCC and VIO thresholds guarantee deterministic mode transitions during partial power loss or brownout conditions. |
| TXD dominant time-out | Prevents bus lockup by disabling transmitter after sustained TXD LOW, eliminating need for external watchdog supervision. |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
|---|---|
Use Scenario: Centralized vehicle subsystem managing door locks, lighting, and window controls via CAN FD backbone. IC Role / Device Role / Timing Role: Physical layer interface between 3.3 V MCU and high-speed CAN FD bus; provides VIO-powered wake-up for remote key fob detection. Use Value: Enables zero-power standby with sub-2 μA current draw and reliable 5 Mbit/s firmware updates without hardware redesign. |
Use Scenario: Aggregation node collecting radar, camera, and ultrasonic sensor data over CAN FD for fusion processing. IC Role / Device Role / Timing Role: High-integrity bus transceiver with ±40 V fault tolerance and low EME for noise-sensitive ADAS environments. Use Value: Maintains signal integrity at 5 Mbit/s while meeting CISPR 25 Class 5 EMI limits and AEC-Q100 Grade 1 temperature rating. |
| Electric Powertrain Gateway | Commercial Vehicle Telematics Unit |
Use Scenario: Isolated gateway bridging battery management system (BMS), motor controller, and infotainment over CAN FD. IC Role / Device Role / Timing Role: Fail-safe transceiver with undervoltage hysteresis and thermal shutdown (Tj(sd) = 180–200 °C) for high-power traction systems. Use Value: Guarantees bus disengagement during overtemperature events and recovers automatically when junction cools below 175–195 °C. |
Use Scenario: Fleet telematics device logging GPS, engine diagnostics, and driver behavior over heavy-duty CAN networks. IC Role / Device Role / Timing Role: Robust physical layer with ±8 kV HBM ESD protection and ISO 7637-2 transient immunity for harsh truck/van environments. Use Value: Eliminates field failures due to load dump or jump-start transients while supporting CAN FD data logging at 2+ Mbit/s. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed CAN FD transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TJA1044GT/0Z | Single-supply (VCC only); no VIO pin; Standby current 8–12 μA (vs. ≤2 μA); AEC-Q100 Grade 1, same SO8 package. | Lacks VIO-based wake-up capability; requires VCC to remain active for bus monitoring; less suitable for ultra-low-power gateways. | Select when board layout already uses single-supply design and wake-up timing >1.8 μs is acceptable. |
| TJR1442AT/0Z | AEC-Q100 Grade 0 (150 °C ambient); identical pinout and VIO functionality; same 0.5–1.8 μs wake-up filter; higher thermal rating. | Targeted for under-hood applications exceeding 125 °C ambient (e.g., engine control units), not required for cabin or chassis locations. | Select only when full Grade 0 qualification is mandated; otherwise TJA1442AT/0Z offers optimal cost/performance balance for Grade 1 use cases. |
Compared with TJA1044GT/0Z, the TJA1442AT/0Z reduces standby current by >80 % and adds VIO-powered wake-up independence; compared with TJR1442AT/0Z, it trades 25 °C ambient headroom for lower cost and sufficient thermal margin in most non-engine-bay automotive modules.
Availability
TJA1442AT/0Z is available at Aetrix Electronics and suitable for automotive body control modules, ADAS sensor hubs, electric powertrain gateways, and commercial vehicle telematics units requiring stable component supply across extended production lifecycles.
Supply support for TJA1442AT/0Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in CAN protocol stacks and automotive-grade analog front-ends.
The TJA1442AT/0Z belongs to NXP's TJx144x family of high-speed CAN FD transceivers, engineered specifically for AEC-Q100-compliant automotive ECUs requiring ultra-low-power standby, robust fault tolerance, and seamless migration from Classical CAN.
FAQ
What is the maximum data rate supported by the TJA1442AT/0Z?
The TJA1442AT/0Z supports CAN FD data rates up to 5 Mbit/s in the fast phase, fully compliant with ISO 11898-2:2016 and SAE J2284-1 through J2284-5. This enables high-throughput firmware updates and real-time sensor data streaming in modern automotive networks. The TJA1442AT/0Z maintains signal integrity and low electromagnetic emission across the full range.
Does the TJA1442AT/0Z require both VCC and VIO supplies to operate?
Yes - the TJA1442AT/0Z requires both VCC (4.5–5.5 V) for bus drivers and VIO (2.95–5.5 V) for I/O logic and the low-power wake-up receiver. VIO enables bus monitoring even when VCC is shut down, a key feature for ultra-low-power applications. The TJA1442AT/0Z will enter Off mode if VIO falls below 2.65 V.
How does the TJA1442AT/0Z handle undervoltage conditions?
The TJA1442AT/0Z implements dual independent undervoltage detection: VCC < 4.0–4.5 V triggers Standby mode, while VIO < 2.65–2.95 V forces Off mode with high-ohmic bus disengagement. Hysteresis of 50 mV prevents oscillation during brownout recovery. These thresholds ensure deterministic fail-safe behavior without external supervision circuits in the TJA1442AT/0Z.
Is the TJA1442AT/0Z pin-compatible with the TJA1042 or TJA1044GT?
Yes - the TJA1442AT/0Z is explicitly designed as a pin-compatible replacement for the TJA1042 and TJA1044GT, sharing the same SO8 (SOT96-1) footprint and pin assignment. No PCB layout changes are required; software remains unchanged. However, the TJA1442AT/0Z adds VIO functionality and reduces standby current significantly versus those predecessors.
What protection features does the TJA1442AT/0Z include for automotive environments?
The TJA1442AT/0Z integrates ±40 V bus fault tolerance (per IEC 60134), ±8 kV HBM ESD protection on CANH/CANL, TXD dominant time-out to prevent bus lockup, and thermal shutdown at 180–200 °C junction temperature. It also meets ISO 7637-2 Pulse 3b transient immunity and CISPR 25 EMI limits - all validated per AEC-Q100 Grade 1 requirements for the TJA1442AT/0Z.
TJA1442AT/0Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- CANbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 50 mV
- Data Rate:
- 5Mbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TJA1442AT/0Z FAQ
1.How can I place an order for TJA1442AT/0Z through Aetrix?
Please submit a Request for Quotation (RFQ) for TJA1442AT/0Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TJA1442AT/0Z reliable?
The price and inventory of TJA1442AT/0Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1442AT/0Z is usually 5 days.
3.What payment methods are accepted for TJA1442AT/0Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TJA1442AT/0Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TJA1442AT/0Z?
TJA1442AT/0Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TJA1442AT/0Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TJA1442AT/0Z?
For technical support, including TJA1442AT/0Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1442AT/0Z requirements.
6.How does Aetrix verify that TJA1442AT/0Z is sourced from the original manufacturer or authorized distributors?
All TJA1442AT/0Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TJA1442AT/0Z meets industry standards.
7.What is the process for return or replacement of TJA1442AT/0Z?
All TJA1442AT/0Z units undergo pre-shipment inspection (PSI). If there is an issue with TJA1442AT/0Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TJA1442AT/0Z part is unused and in its original packaging.
Return procedure for TJA1442AT/0Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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