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Home > Products > Integrated Circuits (ICs) > Interface > Drivers, Receivers, Transceivers

NXP Semiconductors TJA1145ATK/FD/0Z

Name: TJA1145ATK/FD/0Z
Brand: NXP Semiconductors
SKU: TJA1145ATK/FD/0Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TJA1145ATK/FD/0Z

Manufacturer:: NXP Semiconductors

Category:: Drivers, Receivers, Transceivers

Package:: 14-VDFN Exposed Pad

Datasheet:: TJA1145ATK/FD/0Z.pdf

Description:: IC TRANSCEIVER FULL 1/1 14HVSON

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Product details

Overview

TJA1145ATK/FD/0Z from NXP Semiconductors is a high-speed CAN FD transceiver with FD-passive selective wake-up, ISO 11898-2:2016 and SAE J2284-1–5 compliance, 5 Mbit/s fast-phase data rate support, ±58 V bus fault protection, and HVSON14 (3 mm × 4.5 mm) package - deployed in automotive body control modules for battery-connected partial networking nodes.

For engineers reviewing the TJA1145ATK/FD/0Z datasheet, TJA1145ATK/FD/0Z pinout, TJA1145ATK/FD/0Z application, or TJA1145ATK/FD/0Z equivalent, key selection criteria include FD-passive wake-up behavior, SPI-configurable operating modes (Normal/Standby/Sleep), autonomous bus biasing, 48 µA Sleep current, and compatibility with 3.3 V–5 V microcontrollers via VIO.

Technical Context

The TJA1145ATK/FD/0Z implements a dual-supply CAN physical layer: CAN transmitter powered by VCC (4.5–5.5 V), receiver powered by BAT (4.5–28 V), enabling robust operation across 12 V and 24 V automotive systems. Its FD-passive feature filters CAN FD frames during Sleep/Standby, permitting standard CAN 2.0 controllers to remain dormant without bus errors during concurrent CAN FD traffic.

It integrates SPI (16-/24-/32-bit) for register-level control of mode transitions, wake-up source recognition, overtemperature warning/shutdown, TXD dominant time-out, cold-start diagnosis (PO/NMS bits), and undervoltage detection on VCC, VIO, and BAT - all coordinated through a state machine supporting Normal, Standby, Sleep, Overtemp, and Off modes.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 5 Mbit/s in CAN FD fast phase - enables high-bandwidth firmware updates and sensor fusion in modern ECUs.
Sleep Current	48 µA typical at −40 °C to +85 °C - sustains ultra-low-power partial networking in always-on battery-connected nodes.
Bus Fault Protection	±58 V on CANH/CANL - prevents latch-up or damage during load-dump or jump-start events in vehicle wiring harnesses.
ESD Protection	±6 kV IEC TS 62228 on CANH/CANL/BAT/WAKE - meets stringent automotive EMC requirements without external TVS diodes.
VIO Range	2.85 V to 5.5 V - allows direct interfacing with 3.3 V or 5 V microcontrollers without level-shifting circuitry.
Operating Temp	−40 °C to +150 °C virtual junction temperature - qualified for under-hood and powertrain ECU deployment.
AEC-Q100 Grade	Grade 1 (−40 °C to +125 °C ambient) - certified for automotive safety-critical applications per AEC-Q100 Rev G.

Pinout & Package

Package: HVSON14 (SOT1086-2), 3 mm × 4.5 mm × 0.85 mm, leadless thermal-enhanced package with exposed center pad (GND-connected) for improved thermal dissipation and AOI reliability.

Pin/Terminal	Circuit Role	Design Meaning
1 TXD	Transmit Data Input	Digital input from CAN controller; dominant time-out function prevents bus lockup if held LOW.
2 GND	Digital Ground Reference	Primary ground connection; die supply ground tied to both Pin 2 and exposed center pad.
3 VCC	Transceiver Core Supply	5 V supply for CAN transmitter and internal logic; undervoltage detection threshold = 4.5 V.
4 RXD	Receive Data Output	Active-low digital output reflecting bus state; driven LOW on wake-up/interrupt detection.
5 VIO	I/O Level Adaptor Supply	Configures logic levels for TXD/RXD/SDO/SDI/SCK/SCSN; supports 3.3 V or 5 V host interfaces.
6 SDO	SPI Data Output	3-state output for SPI readback of status registers (e.g., Main Status, Transceiver Event).
7 INH	Inhibit Output	Open-drain output controlling external voltage regulators; high-ohmic in Sleep mode to cut VCC/VIO supply.
8 SCK	SPI Clock Input	Supports up to 10 MHz SPI clock; functional in Normal/Standby/Sleep (with VIO applied).
9 WAKE	Local Wake-up Input	Edge-sensitive input enabling wake-up from Sleep/Standby; can be disabled to reduce leakage current.
10 BAT	Battery Supply Input	4.5–28 V primary supply for CAN receiver and bias circuitry; includes undervoltage detection (2.8–3.0 V).
11 SDI	SPI Data Input	Accepts SPI write commands for Mode Control (0x01), CAN Control (0x20), and configuration registers.
12 CANL	CAN Bus Low Terminal	Differential bus line; short-circuit proof to ±58 V; biased autonomously to GND or 2.5 V depending on activity.
13 CANH	CAN Bus High Terminal	Differential bus line; short-circuit proof to ±58 V; paired with CANL for ISO 11898-2-compliant signaling.
14 SCSN	SPI Chip Select Input	Active-low enable for SPI communication; must be asserted before SCK/SDI transitions.

Key Features

Feature	Design Value
FD-passive selective wake-up	Ignores CAN FD frames in Sleep/Standby while detecting ISO 11898-2:2016 wake-up patterns - eliminates false wake-ups in mixed CAN 2.0/CAN FD networks.
Autonomous bus biasing	Biases CANH/CANL to 2.5 V during bus activity (Offline Bias) or GND when silent (Offline) - maintains bus integrity without host intervention.
Multi-mode power management	Five hardware-managed states (Off/Overtemp/Normal/Standby/Sleep); INH-controlled node-level power-down reduces system standby current.
Integrated diagnostics	TXD time-out, overtemperature warning/shutdown, cold-start flag (PO/NMS), and VCC/VIO/BAT undervoltage detection - enables fail-safe ECU boot and runtime monitoring.
Robust automotive protection	±58 V bus fault tolerance, ±6 kV IEC TS 62228 ESD, ISO 7637-3 pulse 1/2a/3a/3b transient immunity - eliminates need for external protection components.

Applications

Body Control Module (BCM)	Door Control Unit (DCU)
Use Scenario: Always-on BCM connected to vehicle battery, managing lighting, locks, and windows while minimizing quiescent current. IC Role / Device Role / Timing Role: CAN FD transceiver providing partial networking wake-up capability and autonomous bus biasing to maintain CAN bus stability during sleep. Use Value: 48 µA Sleep current and FD-passive filtering extend battery life in parked vehicles without disrupting CAN FD diagnostics from other ECUs.	Use Scenario: Distributed DCU with local wake-up via door handle sensor and remote wake-up via CAN bus command. IC Role / Device Role / Timing Role: Interface between 3.3 V MCU and high-speed CAN bus; uses WAKE pin for local event detection and SPI for mode configuration. Use Value: VIO-adapted I/O and 10 MHz SPI allow seamless integration with low-voltage MCUs while supporting rapid wake-up response (<100 µs).
Powertrain Gateway	ADAS Domain Controller
Use Scenario: Gateway bridging CAN FD powertrain networks with legacy CAN 2.0 chassis networks. IC Role / Device Role / Timing Role: High-speed CAN FD transceiver with selective wake-up and 5 Mbit/s fast-phase timing - synchronizes torque requests and diagnostic data. Use Value: ISO 11898-2:2016 and SAE J2284-1–5 compliance ensures interoperability across OEM-specific powertrain protocols.	Use Scenario: ADAS domain controller requiring reliable CAN communication amid high EMI environments (e.g., near radar or camera modules). IC Role / Device Role / Timing Role: CAN FD physical layer with ±6 kV IEC TS 62228 ESD and ISO 7637-3 transient immunity - maintains link integrity during electromagnetic disturbances. Use Value: Integrated diagnostics (overtemperature, undervoltage, TXD timeout) enable ASIL-B–compatible fault handling without external supervision.

Body Control Module (BCM)

Door Control Unit (DCU)

Use Scenario: Always-on BCM connected to vehicle battery, managing lighting, locks, and windows while minimizing quiescent current.

IC Role / Device Role / Timing Role: CAN FD transceiver providing partial networking wake-up capability and autonomous bus biasing to maintain CAN bus stability during sleep.

Use Value: 48 µA Sleep current and FD-passive filtering extend battery life in parked vehicles without disrupting CAN FD diagnostics from other ECUs.

Use Scenario: Distributed DCU with local wake-up via door handle sensor and remote wake-up via CAN bus command.

IC Role / Device Role / Timing Role: Interface between 3.3 V MCU and high-speed CAN bus; uses WAKE pin for local event detection and SPI for mode configuration.

Use Value: VIO-adapted I/O and 10 MHz SPI allow seamless integration with low-voltage MCUs while supporting rapid wake-up response (<100 µs).

Powertrain Gateway

ADAS Domain Controller

Use Scenario: Gateway bridging CAN FD powertrain networks with legacy CAN 2.0 chassis networks.

IC Role / Device Role / Timing Role: High-speed CAN FD transceiver with selective wake-up and 5 Mbit/s fast-phase timing - synchronizes torque requests and diagnostic data.

Use Value: ISO 11898-2:2016 and SAE J2284-1–5 compliance ensures interoperability across OEM-specific powertrain protocols.

Use Scenario: ADAS domain controller requiring reliable CAN communication amid high EMI environments (e.g., near radar or camera modules).

IC Role / Device Role / Timing Role: CAN FD physical layer with ±6 kV IEC TS 62228 ESD and ISO 7637-3 transient immunity - maintains link integrity during electromagnetic disturbances.

Use Value: Integrated diagnostics (overtemperature, undervoltage, TXD timeout) enable ASIL-B–compatible fault handling without external supervision.

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
TJA1145AT/FD	SO14 package (3.9 mm body width); identical electrical specs and FD-passive functionality; higher thermal resistance than HVSON14.	Preferred where board space permits larger footprint and manual rework is required; less suitable for high-density automotive PCBs.	Select TJA1145AT/FD only when SO14 assembly infrastructure exists and thermal performance margin is sufficient.
MCP2562FD-H/SN	Microchip CAN FD transceiver; no FD-passive mode; supports 5 Mbit/s but lacks selective wake-up frame filtering; 70 µA Sleep current.	Used in cost-sensitive non-automotive CAN FD nodes where partial networking is not required.	Choose MCP2562FD-H/SN only if FD-passive wake-up is unnecessary and AEC-Q100 qualification is not mandated.

Compared with TJA1145ATK/FD/0Z, the TJA1145AT/FD offers identical functionality in a larger SO14 package with reduced thermal efficiency, while the MCP2562FD-H/SN omits FD-passive wake-up and AEC-Q100 qualification - making TJA1145ATK/FD/0Z the sole option for thermally constrained, safety-compliant automotive partial networking.

Availability

TJA1145ATK/FD/0Z is available at Aetrix Electronics and suitable for automotive body control modules, door control units, powertrain gateways, and ADAS domain controllers requiring stable component supply across extended product lifecycles.

Supply support for TJA1145ATK/FD/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, SBC, and automotive Ethernet technologies.

The TJA1145A family was designed specifically for automotive partial networking architectures - delivering ultra-low-power wake-up, CAN FD coexistence, and integrated diagnostics to enable next-generation energy-efficient ECUs.

FAQ

What is the FD-passive feature of the TJA1145ATK/FD/0Z?

The FD-passive feature enables the TJA1145ATK/FD/0Z to ignore CAN FD frames while in Sleep or Standby mode, responding only to ISO 11898-2:2016-compliant selective wake-up patterns. This prevents false wake-ups in mixed CAN 2.0/CAN FD networks and allows legacy CAN controllers to remain dormant during CAN FD communication - a capability confirmed in Section 7.3.2 of the official datasheet and unique to TJA1145A/FD variants.

Does the TJA1145ATK/FD/0Z support both 3.3 V and 5 V microcontrollers?

Yes, the TJA1145ATK/FD/0Z supports direct interfacing with 3.3 V or 5 V microcontrollers via its VIO pin, which accepts 2.85 V to 5.5 V. The I/O level adaptor automatically adjusts TXD, RXD, SDO, SDI, SCK, and SCSN logic thresholds to match the host MCU's voltage - eliminating external level shifters. This behavior is specified in Table 3 (Pin Description) and Section 2.3 of the datasheet.

What is the maximum CAN FD data rate supported by the TJA1145ATK/FD/0Z?

The TJA1145ATK/FD/0Z supports data rates up to 5 Mbit/s in the CAN FD fast phase, as guaranteed by its timing parameters and compliance with ISO 11898-2:2016 and SAE J2284-1 to J2284-5. This capability is explicitly stated in Section 2.1 ("Timing guaranteed for data rates up to 5 Mbit/s") and validated in the Quick Reference Data (Table 1) and Functional Description (Section 7.2).

How does the TJA1145ATK/FD/0Z handle undervoltage conditions on VCC, VIO, and BAT?

The TJA1145ATK/FD/0Z features independent undervoltage detection on VCC (4.5–4.75 V), VIO (2.7–2.85 V), and BAT (2.8–3.0 V). When triggered, it forces transition to Sleep mode (if VCC/VIO undervoltage occurs) or Off mode (if BAT drops below threshold), clears pending wake-up events, and asserts status bits (e.g., FSMS = 1) for diagnostics - all detailed in Sections 3, 7.1.1.3, and Table 6 of the datasheet.

Is the TJA1145ATK/FD/0Z AEC-Q100 qualified?

Yes, the TJA1145ATK/FD/0Z is AEC-Q100 qualified per Grade 1 (−40 °C to +125 °C ambient), as stated in Section 2.2 of the datasheet. This qualification covers stress testing for temperature cycling, humidity, ESD, and mechanical shock - confirming suitability for automotive powertrain, chassis, and body electronics applications.

TJA1145ATK/FD/0Z Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 14-VDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Transceiver

Protocol:: CANbus

Number of Drivers/Receivers:: 1/1

Duplex:: Full

Receiver Hysteresis:: 800 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:: 14-HVSON (3x4.5)

TJA1145ATK/FD/0Z FAQ

1.How can I place an order for TJA1145ATK/FD/0Z through Aetrix?

Please submit a Request for Quotation (RFQ) for TJA1145ATK/FD/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 TJA1145ATK/FD/0Z reliable?

The price and inventory of TJA1145ATK/FD/0Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1145ATK/FD/0Z is usually 5 days.

3.What payment methods are accepted for TJA1145ATK/FD/0Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TJA1145ATK/FD/0Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TJA1145ATK/FD/0Z?

TJA1145ATK/FD/0Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TJA1145ATK/FD/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 TJA1145ATK/FD/0Z?

For technical support, including TJA1145ATK/FD/0Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1145ATK/FD/0Z requirements.

6.How does Aetrix verify that TJA1145ATK/FD/0Z is sourced from the original manufacturer or authorized distributors?

All TJA1145ATK/FD/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 TJA1145ATK/FD/0Z meets industry standards.

7.What is the process for return or replacement of TJA1145ATK/FD/0Z?

All TJA1145ATK/FD/0Z units undergo pre-shipment inspection (PSI). If there is an issue with TJA1145ATK/FD/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 TJA1145ATK/FD/0Z part is unused and in its original packaging.

Return procedure for TJA1145ATK/FD/0Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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