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NXP Semiconductors TJA1081GTS/0Z
- Part No.:
- TJA1081GTS/0Z
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TJA1081GTS/0Z.pdf
- Description:
- IC INTERFACE SPECIALIZED FLEXRAY
- Quantity:
- Payment:
- Shipping:
Inventory:1,597
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Product details
Overview
TJA1081GTS/0Z from NXP Semiconductors is a FlexRay node transceiver compliant with ISO 17458-4:2013, designed for automotive time-triggered communication systems operating at 2.5–10 Mbit/s. It provides differential transmit/receive capability between protocol controller and physical bus, features fail-silent undervoltage behavior, supports 4.75–60 V battery supply, and delivers <55 µA sleep current for permanently battery-connected ECUs.
For engineers reviewing the TJA1081GTS/0Z datasheet, TJA1081GTS/0Z pinout, TJA1081GTS/0Z application, or TJA1081GTS/0Z equivalent, key selection considerations include its AEC-Q100 qualification, remote/local wake-up support via dedicated data frames or WAKE pin, integrated bus guardian interface (BGE), auto I/O level adaptation to VIO, and enhanced EMC performance versus TJA1081B.
Technical Context
The TJA1081GTS/0Z implements a dual-supply architecture with independent ramp-up for VBAT (4.75–60 V), VCC (4.75–5.25 V), and VIO (2.8–5.25 V), enabling robust operation across 14 V, 24 V, and 48 V automotive systems. Its digital state machine monitors VBAT/VCC/VIO undervoltage conditions, overtemperature, bus short-circuits, and TXEN clamping - triggering defined low-power transitions or fail-silent shutdown.
It supports six operating modes (Normal, Receive-only, Standby, Go-to-Sleep, Sleep, PowerOff) controlled by EN and STBN pins, with wake-up detection via bus pattern or WAKE pin. Pin ERRN dynamically signals either error status (in Normal/Receive-only) or wake-up source (in Standby/Sleep), while RXEN/RXD behavior is mode-dependent and synchronized to bus activity detection thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 2.5–10 Mbit/s - enables use in high-speed deterministic FlexRay networks for ADAS and chassis control. |
| VBAT range | 4.75–60 V - supports cold-crank, load-dump, and multi-voltage platforms without external regulators. |
| Sleep current | <55 µA - minimizes battery drain in always-on ECU applications such as gateway or body control modules. |
| ESD protection | ±6 kV on BP/BM, VBAT, WAKE - meets IEC 61000-4-2 for robustness in harsh automotive environments. |
| Bus fault tolerance | Short-circuit proof to battery and ground - ensures safe operation during wiring faults in 14/24/48 V systems. |
| Undervoltage detection | Vuvd(VBAT): 4.45–4.715 V; Vuvd(VCC): 4.45–4.72 V; Vuvd(VIO): 2.55–2.765 V - triggers automatic mode transition to prevent undefined bus behavior. |
| EMC performance | Meets latest industry standards for EME (unshielded cable) and EMI (wide common-mode receiver) - reduces need for shielding and filtering components. |
Pinout & Package
Package: SSOP16 (SOT338-1), plastic shrink small outline package, 16 leads, body width 5.3 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INH | Analog output | Drives external voltage regulator enable; HIGH in Normal/Receive-only/Standby modes to maintain system power. |
| EN | Digital input | Global enable; internal pull-down; HIGH required to enter Normal/Receive-only modes. |
| VIO | Power supply | Supplies logic interface; auto-adapts TXD/RXD voltage levels to host controller's I/O domain (2.8–5.25 V). |
| TXD | Digital input | Transmit data input; internal pull-down; initiates transmission when first LOW detected with BGE=HIGH and TXEN=LOW. |
| TXEN | Digital input | Transmitter enable; internal pull-up; LOW disables transmitter; clamping detection disables TX if held LOW > tdetCL(TXEN). |
| RXD | Digital output | Receive data output; driven only when RXEN=LOW (bus active); HIGH/LOW reflects differential bus state after activity detection. |
| BGE | Digital input | Bus guardian enable; internal pull-down; LOW disables transmitter regardless of TXEN state - critical for safety-critical bus arbitration. |
| STBN | Digital input | Standby control; internal pull-down; LOW forces low-power modes and configures ERRN for wake-up signaling. |
| RXEN | Digital output | Receive enable flag; LOW indicates bus activity detected; HIGH blocks RXD output during idle periods. |
| ERRN | Digital output | Open-drain error/wake-up indicator; LOW = error (Normal/Receive-only) or wake event (Standby/Sleep); polarity configurable by EN/STBN state. |
| VBAT | Power supply | Main battery supply; powers analog bus driver and internal regulators; monitored for undervoltage (UVVBAT) and wake-up flag reset. |
| WAKE | Analog input | Local wake-up trigger; internal bias selectable (pull-up/pull-down); detects voltage transitions > tfltr(WAKE) to initiate wake sequence. |
| GND | Ground | Reference for all analog and digital circuits; separate return path for bus driver improves EMC immunity. |
| BM | Analog I/O | Bus line minus; differential pair with BP; short-circuit protected to battery/ground; passive when unpowered. |
| BP | Analog I/O | Bus line plus; differential pair with BM; ±6 kV ESD rated; failsafe termination maintains bus integrity during fault. |
| VCC | Power supply | +5 V digital supply; powers state machine and diagnostics; undervoltage (UVVCC) forces Standby mode to preserve bus quiescence. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 17458-4:2013 compliance | Fully implements FlexRay electrical physical layer requirements including bus guardian interface, remote wake-up, and logic level adaptation - ensures interoperability in certified automotive networks. |
| AEC-Q100 qualification | Qualified for Grade 1 (−40 °C to +125 °C ambient) - validated for under-hood and safety-critical ECU deployment without derating. |
| Fail-silent undervoltage response | Automatic transition to Sleep/Standby on VBAT/VCC/VIO undervoltage - prevents undefined bus states and guarantees passive bus termination during power faults. |
| Dual wake-up capability | Supports both local (WAKE pin) and remote (bus pattern or dedicated FlexRay frame) wake sources - enables flexible network management in distributed architectures. |
| Enhanced EMC performance | Lower EME than TJA1081B and wide common-mode receiver range - allows use with unshielded cables while meeting CISPR 25 Class 5 radiated emissions limits. |
| Independent supply ramp-up | VBAT, VCC, and VIO power domains start up independently - eliminates sequencing constraints and simplifies power architecture design. |
Applications
| Advanced Driver Assistance Systems (ADAS) | Chassis Control Units |
|---|---|
Use Scenario: Synchronized sensor fusion and actuator coordination in radar-camera fusion ECUs requiring deterministic latency and fault containment. IC Role / Device Role / Timing Role: FlexRay physical layer interface providing time-triggered, fault-tolerant communication between master controller and distributed radar modules. Use Value: Enables sub-microsecond jitter control and guaranteed message delivery for safety-critical braking and steering commands. | Use Scenario: Real-time torque vectoring and active suspension control in electric vehicle platforms with multiple distributed actuators. IC Role / Device Role / Timing Role: High-integrity bus transceiver linking central chassis controller to wheel-end motor drivers and suspension sensors. Use Value: Delivers 10 Mbit/s bandwidth and fail-silent behavior during undervoltage events to maintain dynamic stability functions. |
| Automotive Gateway Modules | Body Control Modules (BCM) |
Use Scenario: Protocol bridging between FlexRay, CAN FD, and Ethernet domains in zonal architecture gateways with permanent battery connection. IC Role / Device Role / Timing Role: Low-power FlexRay node handling time-critical chassis messages while minimizing standby current draw. Use Value: Achieves <55 µA sleep current and supports remote wake-up via dedicated FlexRay frames - extends battery life in parked vehicle scenarios. | Use Scenario: Centralized lighting, door, and climate control in premium vehicles requiring coordinated timing and diagnostics across multiple zones. IC Role / Device Role / Timing Role: Robust physical layer interface for FlexRay backbone connecting BCM to seat modules, mirror controllers, and ambient lighting nodes. Use Value: Provides ±6 kV ESD protection on BP/BM/WAKE and short-circuit proofing to 48 V - withstands assembly-line ESD and service environment faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FlexRay transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TJA1081B | Fully pin-compatible and functionally identical per datasheet; lower EMC performance than TJA1081GTS/0Z. | No enhanced EME/EMI specifications; not optimized for unshielded cable systems. | Select TJA1081B only if legacy design reuse is required and latest EMC standards are not mandated. |
| TJA1080A | Shares mode control architecture but differs in pinout (TJA1080A uses SO14); lacks BGE pin and dedicated remote wake-up frame support. | Designed for simpler FlexRay nodes without bus guardian interface or advanced wake-up diagnostics. | Choose TJA1080A for cost-sensitive non-safety applications where BGE control and frame-based wake-up are unnecessary. |
Compared with TJA1081B and TJA1080A, the TJA1081GTS/0Z offers superior EMC performance, explicit bus guardian enable (BGE), and remote wake-up via dedicated FlexRay data frames - making it the preferred choice for new AEC-Q100-compliant designs requiring ISO 17458-4:2013 conformance and fail-safe operation.
Availability
TJA1081GTS/0Z is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), Chassis Control Units, and Automotive Gateway Modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-qualified automotive-grade reliability.
Supply support for TJA1081GTS/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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive networking and functional safety.
The TJA1081GTS/0Z belongs to NXP's FlexRay transceiver product line, engineered specifically for time-triggered, fault-tolerant automotive networks demanding deterministic latency, high EMC immunity, and fail-silent behavior in safety-critical ECUs.
FAQ
What is the primary compliance standard met by the TJA1081GTS/0Z?
The TJA1081GTS/0Z is fully compliant with ISO 17458-4:2013, the FlexRay electrical physical layer specification. This certification ensures interoperability with other FlexRay nodes in automotive networks, guarantees defined timing behavior, and validates support for bus guardian interface, remote wake-up, and logic level adaptation - all essential for safety-critical chassis and ADAS applications. The TJA1081GTS/0Z meets this standard across its full operating temperature and voltage range.
How does the TJA1081GTS/0Z handle undervoltage conditions on VBAT, VCC, or VIO?
The TJA1081GTS/0Z implements independent undervoltage detection on VBAT (4.45–4.715 V), VCC (4.45–4.72 V), and VIO (2.55–2.765 V). Detection triggers automatic, defined mode transitions: UVVBAT forces Sleep mode, UVVCC forces Standby mode, and UVVIO forces Sleep mode while internally pulling EN/STBN/TXD low and TXEN high. This fail-silent behavior ensures passive bus termination and prevents undefined transmitter states - a critical requirement for automotive functional safety. The TJA1081GTS/0Z maintains this behavior across its full −40 °C to +125 °C operating range.
What wake-up mechanisms does the TJA1081GTS/0Z support, and how are they differentiated?
The TJA1081GTS/0Z supports two distinct wake-up mechanisms: local wake-up via the WAKE pin (voltage threshold detection with programmable bias) and remote wake-up via bus patterns or dedicated FlexRay data frames. Local wake-up is triggered by sustained low/high voltage on WAKE exceeding tfltr(WAKE); remote wake-up occurs upon detection of a valid DATA_0/DATA_1 sequence or a specific 40-byte frame payload. The wake flag consolidates both sources, and ERRN output distinguishes them in Standby/Sleep modes. This dual-path capability enables flexible network management in the TJA1081GTS/0Z without requiring protocol controller intervention.
Is the TJA1081GTS/0Z pin-compatible with other NXP FlexRay transceivers?
Yes, the TJA1081GTS/0Z is fully pin-compatible and functionally compatible with the TJA1081B, sharing identical SSOP16 pinout and register-level behavior. It is not pin-compatible with the TJA1080A, which uses an SO14 package and lacks the BGE pin. The TJA1081GTS/0Z retains backward compatibility with TJA1081B designs while delivering enhanced EMC performance and additional diagnostics - allowing drop-in replacement in existing layouts where improved emissions/immunity are required. No PCB changes are needed when upgrading from TJA1081B to TJA1081GTS/0Z.
What is the role of the BGE (Bus Guardian Enable) pin in the TJA1081GTS/0Z?
The BGE pin in the TJA1081GTS/0Z provides hardware-level control of the bus guardian function: when BGE is LOW, the transmitter is disabled regardless of TXEN state, ensuring strict arbitration enforcement and preventing bus conflicts in safety-critical networks. This dedicated pin enables external microcontrollers or safety monitors to assert immediate bus silence - a feature required for ISO 26262 ASIL-B/C compliance. Unlike software-controlled disable methods, BGE operates at the physical layer, guaranteeing deterministic response time and independence from protocol controller firmware. The TJA1081GTS/0Z implements this function with internal pull-down for fail-safe default behavior.
TJA1081GTS/0Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Interface:
- FlexRay
- Voltage - Supply:
- 4.75V ~ 5.25V
- Supplier Device Package:
- 16-SSOP
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
TJA1081GTS/0Z FAQ
1.How can I place an order for TJA1081GTS/0Z through Aetrix?
Please submit a Request for Quotation (RFQ) for TJA1081GTS/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 TJA1081GTS/0Z reliable?
The price and inventory of TJA1081GTS/0Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1081GTS/0Z is usually 5 days.
3.What payment methods are accepted for TJA1081GTS/0Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TJA1081GTS/0Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TJA1081GTS/0Z?
TJA1081GTS/0Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TJA1081GTS/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 TJA1081GTS/0Z?
For technical support, including TJA1081GTS/0Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1081GTS/0Z requirements.
6.How does Aetrix verify that TJA1081GTS/0Z is sourced from the original manufacturer or authorized distributors?
All TJA1081GTS/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 TJA1081GTS/0Z meets industry standards.
7.What is the process for return or replacement of TJA1081GTS/0Z?
All TJA1081GTS/0Z units undergo pre-shipment inspection (PSI). If there is an issue with TJA1081GTS/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 TJA1081GTS/0Z part is unused and in its original packaging.
Return procedure for TJA1081GTS/0Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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