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NXP Semiconductors TJA1081BTS,118
- Part No.:
- TJA1081BTS,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TJA1081BTS,118.pdf
- Description:
- IC INTERFACE SPECIALIZED 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,019
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Product details
Overview
TJA1081BTS,118 from NXP Semiconductors is a FlexRay node transceiver compliant with FlexRay V3.0.1 physical layer specification, implementing JASPAR 'Bus driver increased voltage amplitude transmitter' functional class. It operates at data rates from 2.5 Mbit/s to 10 Mbit/s, supports 14 V/24 V/48 V automotive systems, and provides differential TX/RX capability between protocol controller and physical bus in time-triggered automotive networks.
For engineers reviewing the TJA1081BTS,118 datasheet, TJA1081BTS,118 pinout, TJA1081BTS,118 application, or TJA1081BTS,118 equivalent, key selection considerations include its AEC-Q100 qualification, 60 ns minimum bit time support at 400 mV differential input, fail-silent undervoltage behavior, remote/local wake-up detection, and SSOP16 package compatibility with TJA1081.
Technical Context
The TJA1081BTS,118 implements a dual-mode bus interface with independent normal and low-power receivers, integrated bus guardian logic via BGE pin control, and auto I/O level adaptation to host VIO supply. Its state machine supports six defined operating modes-Normal, Receive-only, Standby, Go-to-sleep, Sleep, and PowerOff-with precise transition rules governed by EN, STBN, wake flags, and undervoltage detection on VBAT/VCC/VIO.
It features dedicated diagnostic signaling on ERRN (configurable for error or wake-up), RXEN (bus activity detection), and internal monitoring of temperature, short-circuit, and clamping on TXEN. Protection includes ±6 kV ESD on bus pins per IEC61000-4-2, ISO 7637-2 Class C transient immunity, and short-circuit proofing to battery and ground across 14 V/24 V/48 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| FlexRay Compliance | Fully compliant with FlexRay electrical physical layer spec V3.0.1 and JASPAR 'increased voltage amplitude transmitter' functional class |
| Data Rate Range | 2.5 Mbit/s to 10 Mbit/s; supports 60 ns minimum bit time at 400 mV differential input voltage |
| Supply Voltage Range | VBAT: 4.75 V to 60 V; supports 14 V, 24 V, and 48 V powered automotive systems |
| ESD Protection | ±6 kV on BP/BM/VTX/VCC/WAKE per IEC61000-4-2; ±6 kV on bus pins per HBM |
| Operating Modes | Normal, Receive-only, Standby, Go-to-sleep, Sleep, PowerOff - with configurable ERRN function and wake-source recognition |
| Diagnostic Outputs | ERRN (error/wake-up flag), RXEN (bus activity indicator), internal overtemperature/short-circuit/UV detection |
| Fail-Silent Behavior | Transmitter and receiver become passive during VBAT/VCC/VIO undervoltage; digital state machine reset ensures defined behavior |
Pinout & Package
Package: SSOP16 (plastic shrink small outline package; 16 leads; body width 5.3 mm; SOT338-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INH (Pin 1) | Inhibit output | Drives external voltage regulator; HIGH in Normal/Receive-only/Standby; floating in Sleep mode |
| EN (Pin 2) | Enable input | Internal pull-down; HIGH enables normal operation; LOW forces low-power modes |
| VIO (Pin 3) | I/O supply | Adapts logic levels to host controller supply; undervoltage triggers fail-silent shutdown |
| TXD (Pin 4) | Transmit data input | Internal pull-down; drives transmitter when BGE=HIGH and TXEN=LOW |
| TXEN (Pin 5) | Transmitter enable | Internal pull-up; HIGH disables transmitter; clamping detection disables TX if held LOW > tdetCL(TXEN) |
| RXD (Pin 6) | Receive data output | Differential bus data output; blocked by RXEN in idle; driven LOW/HIGH based on differential bus voltage |
| BGE (Pin 7) | Bus guardian enable | Internal pull-down; LOW disables transmitter regardless of TXEN; enables bus guardian interface per FlexRay spec |
| STBN (Pin 8) | Standby input | Internal pull-down; LOW initiates Standby/Sleep modes; determines ERRN function (wake vs error) |
| RXEN (Pin 9) | Receive enable output | Indicates bus activity: LOW = activity detected; HIGH = idle; used for wake-up pattern timing validation |
| ERRN (Pin 10) | Error/wake-up flag | Open-drain output; LOW = error (in Normal/Receive-only) or wake event (in Standby/Sleep); high-impedance in PowerOff |
| VBAT (Pin 11) | Battery supply | Main power input; 4.75 V–60 V range; UVVBAT flag triggers Sleep mode and disables INH |
| WAKE (Pin 12) | Local wake-up input | Pull-up/pull-down configurable; detects local wake via voltage threshold crossing with tfltr(WAKE) filtering |
| GND (Pin 13) | Ground | Reference for all analog/digital circuits; no reverse current flow when unpowered |
| BM (Pin 14) | Bus line minus | Differential bus terminal; short-circuit proof to battery/ground; protected against ±6 kV ESD and ISO 7637 transients |
| BP (Pin 15) | Bus line plus | Differential bus terminal; same protection and robustness as BM; forms active differential driver pair |
| VCC (Pin 16) | Digital supply | +5 V supply for internal state machine; UVVCC flag triggers Standby mode; independent ramp-up sequence |
Key Features
| Feature | Design Value |
|---|---|
| JASPAR-compliant transmitter | Meets 'Bus driver increased voltage amplitude transmitter' functional class for enhanced signal integrity in noisy automotive environments |
| Auto I/O level adaptation | Eliminates level-shifter components by dynamically adapting to host controller VIO supply voltage |
| Remote wake-up via data frame | Recognizes dedicated FlexRay payload patterns (e.g., FFh/00h sequences) as valid wake-up sources without requiring bus-level symbol timing |
| Fail-silent undervoltage response | Guarantees passive bus terminals and defined digital state upon VBAT/VCC/VIO collapse - critical for ASIL-B/C system compliance |
| Configurable ERRN function | Single pin serves dual purpose: error alert in active modes, wake-up indicator in low-power modes - reduces MCU GPIO count |
| Gap-free specification | Continuous operation across full VBAT range (4.75 V–60 V) without derating or mode restrictions - simplifies 12 V/24 V/48 V platform reuse |
Applications
| Advanced Driver Assistance Systems (ADAS) | Powertrain Control Units (PCUs) |
|---|---|
Use Scenario: Real-time sensor fusion and actuator coordination in radar/LiDAR-based collision avoidance systems. IC Role / Device Role / Timing Role: FlexRay node transceiver providing deterministic, low-jitter communication between ECUs with <60 ns bit timing precision. Use Value: Enables synchronized sampling across distributed sensors using time-triggered protocol, meeting ISO 26262 ASIL-D timing requirements. | Use Scenario: High-integrity torque management and engine control in hybrid electric vehicles with dual-voltage (14 V + 48 V) architectures. IC Role / Device Role / Timing Role: Physical layer interface between FlexRay protocol controller and powertrain bus, supporting 10 Mbit/s data rate for fast control loop updates. Use Value: Delivers fail-silent behavior during battery voltage sag, ensuring safe torque reduction without bus contention or undefined states. |
| Chassis Domain Controllers | Vehicle Dynamics Control Systems |
Use Scenario: Coordinating brake-by-wire, steer-by-wire, and suspension control modules in centralized chassis domain architecture. IC Role / Device Role / Timing Role: Robust FlexRay transceiver with ±6 kV ESD and ISO 7637-2 Class C immunity for under-hood deployment near high-noise actuators. Use Value: Maintains communication integrity during load-dump transients and EMI events, preventing false fault triggering in safety-critical braking paths. | Use Scenario: Real-time yaw rate, lateral acceleration, and wheel speed synchronization across distributed vehicle dynamics ECUs. IC Role / Device Role / Timing Role: Time-triggered FlexRay node enabling sub-millisecond cycle consistency and deterministic latency for stability control algorithms. Use Value: Supports 2.5–10 Mbit/s adaptive data rates to balance bandwidth and EMC performance in high-speed cornering scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FlexRay transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TJA1080ATS/0Z | Supports identical FlexRay V3.0.1 spec but lacks JASPAR 'increased voltage amplitude' functional class; lower differential output swing | Suitable for non-JASPAR-compliant legacy FlexRay networks; not qualified for new JASPAR-spec designs | Select only if system does not require JASPAR-defined voltage amplitude margin or failsafe timing margins |
| TJA1082BTS/1J | Pin-compatible upgrade with extended temperature range (−40 °C to +150 °C vs −40 °C to +125 °C) and improved ESD robustness (±8 kV) | Required for under-hood applications exceeding 125 °C junction temperature or higher EMC stress environments | Choose when thermal derating or field reliability in harsh environments is critical; requires no PCB change |
Compared with TJA1080ATS/0Z, TJA1081BTS,118 delivers JASPAR-specific voltage amplitude and fail-silent behavior essential for next-gen automotive safety domains; versus TJA1082BTS/1J, it offers proven qualification at lower cost where extended temperature is not required.
Availability
TJA1081BTS,118 is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), Powertrain Control Units (PCUs), and Chassis Domain Controllers requiring stable component supply across automotive production lifecycles.
Supply support for TJA1081BTS,118 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive networking and safety-certified components.
The TJA1081BTS,118 belongs to NXP's FlexRay transceiver product line, designed specifically for time-triggered, safety-critical automotive communication networks requiring deterministic latency, fail-silent operation, and AEC-Q100 qualification.
FAQ
What is the primary compliance standard met by the TJA1081BTS,118?
The TJA1081BTS,118 is fully compliant with the FlexRay electrical physical layer specification V3.0.1 and implements the JASPAR 'Bus driver increased voltage amplitude transmitter' functional class. It is also qualified to AEC-Q100 Grade 1 for automotive use. This dual compliance ensures interoperability in time-triggered FlexRay networks while meeting stringent automotive reliability and signal integrity requirements - a core requirement for the TJA1081BTS,118 in safety-critical ECUs.
How does the TJA1081BTS,118 handle undervoltage conditions on VBAT, VCC, or VIO?
The TJA1081BTS,118 implements independent undervoltage detection on VBAT, VCC, and VIO with distinct fail-silent responses: VBAT undervoltage forces Sleep mode and disables INH; VCC undervoltage triggers Standby mode; VIO undervoltage internally pulls EN/STBN/TXD/BGE LOW and TXEN HIGH before entering Sleep. All paths ensure passive bus terminals and defined digital state - a critical safety feature confirmed in the TJA1081BTS,118 datasheet for ASIL-B/C systems.
What are the wake-up capabilities supported by the TJA1081BTS,118?
The TJA1081BTS,118 supports both local wake-up via voltage threshold detection on WAKE pin (with programmable pull-up/pull-down) and remote wake-up via bus-level patterns (DATA_0/DATA_1/idle sequences) or dedicated FlexRay data frames (e.g., FFh/00h payloads). Wake source recognition is implemented in hardware, and ERRN signals wake events in low-power modes - enabling rapid, deterministic recovery essential for the TJA1081BTS,118 in always-on automotive gateways.
Is the TJA1081BTS,118 pin-compatible with earlier NXP FlexRay transceivers?
Yes, the TJA1081BTS,118 is fully function and footprint compatible with the TJA1081 and supports the same mode control as the TJA1080A. Its SSOP16 (SOT338-1) package matches pin-for-pin with those predecessors, allowing drop-in replacement in existing layouts without redesign. This compatibility is explicitly stated in the TJA1081BTS,118 product documentation and verified across all 16 pins including INH, EN, VIO, TXD, TXEN, RXD, BGE, STBN, RXEN, ERRN, VBAT, WAKE, GND, BM, BP, and VCC.
What protection features does the TJA1081BTS,118 provide for automotive environments?
The TJA1081BTS,118 provides ±6 kV ESD protection on BP/BM/VCC/WAKE per IEC61000-4-2 and HBM, ISO 7637-2 Class C transient immunity on bus lines, short-circuit proofing to battery and ground across 14 V/24 V/48 V systems, and passive bus behavior when unpowered. These protections are validated per automotive qualification standards and directly enable robust deployment in under-hood and chassis locations - a defining characteristic of the TJA1081BTS,118 in real-world vehicle applications.
TJA1081BTS,118 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
TJA1081BTS,118 FAQ
1.How can I place an order for TJA1081BTS,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for TJA1081BTS,118 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 TJA1081BTS,118 reliable?
The price and inventory of TJA1081BTS,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1081BTS,118 is usually 5 days.
3.What payment methods are accepted for TJA1081BTS,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TJA1081BTS,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TJA1081BTS,118?
TJA1081BTS,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TJA1081BTS,118 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 TJA1081BTS,118?
For technical support, including TJA1081BTS,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1081BTS,118 requirements.
6.How does Aetrix verify that TJA1081BTS,118 is sourced from the original manufacturer or authorized distributors?
All TJA1081BTS,118 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 TJA1081BTS,118 meets industry standards.
7.What is the process for return or replacement of TJA1081BTS,118?
All TJA1081BTS,118 units undergo pre-shipment inspection (PSI). If there is an issue with TJA1081BTS,118, 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 TJA1081BTS,118 part is unused and in its original packaging.
Return procedure for TJA1081BTS,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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