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NXP Semiconductors TJA1081TS,112
- Part No.:
- TJA1081TS,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TJA1081TS,112.pdf
- Description:
- IC INTERFACE SPECIALIZED 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,428
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Product details
Overview
TJA1081TS,112 from NXP Semiconductors is a FlexRay node transceiver compliant with FlexRay V2.1 Rev. A and supporting key V3.0.1 features. It operates at data rates up to 10 Mbit/s, supports 60 ns minimum bit time, delivers differential TX/RX capability, and integrates bus guardian control and voltage-level adaptation for VIO. It is designed for automotive ECU communication systems requiring fail-silent behavior, remote/local wake-up, and robust EMC/ESD performance.
For engineers reviewing the TJA1081TS,112 datasheet, TJA1081TS,112 pinout, TJA1081TS,112 application, or TJA1081TS,112 equivalent, this page provides verified operating modes (Normal, Receive-only, Standby, Go-to-sleep, Sleep), diagnostic flag reporting via ERRN, low-power management with inhibit output (INH), and automotive-grade protection including ±8 kV HBM ESD and ISO 7637-2 Class C transient immunity.
Technical Context
The TJA1081TS,112 implements a dual-supply architecture with independent VBAT (6.5–60 V), VCC (4.75–5.25 V), and VIO (2.2–5.25 V) rails, enabling operation in both 14 V and 42 V automotive systems. Its digital state machine is powered by whichever supply (VCC, VIO, or VBAT) remains valid, ensuring fail-silent transitions during undervoltage events.
It features a dedicated low-power receiver for wake-up detection in Standby/Sleep modes, supports bus wake-up via DATA_0/DATA_1 patterns or dedicated FlexRay frames, and provides real-time diagnostics through a serial status register read via ERRN/EN timing. Mode control is fully managed by STBN and EN pins with deterministic state transitions defined in Table 3 and Figure 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | Up to 10 Mbit/s - enables high-speed deterministic communication in time-triggered FlexRay networks. |
| Minimum bit time | 60 ns - supports maximum FlexRay clock frequencies and tight timing budgets in safety-critical ECUs. |
| Bus ESD protection | ±8 kV HBM on BP/BM - ensures robustness against human-body-model electrostatic discharge in assembly and field environments. |
| Supply voltage range | VBAT = 6.5–60 V; VCC = 4.75–5.25 V; VIO = 2.2–5.25 V - allows direct integration into 14 V and 42 V vehicle electrical architectures without external regulators. |
| Operating temperature | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and chassis-mounted automotive applications. |
| EMI immunity | Differential receiver with wide common-mode range - maintains reliable signal integrity in high-noise engine bay environments. |
| EME emission | Very low electromagnetic emission - permits use with unshielded twisted-pair cabling, reducing system cost and weight. |
Pinout & Package
Package: SSOP16 (SOT338-1), plastic shrink small outline package, 16 leads, body width 5.3 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BP / BM | Bus line plus / minus | Differential I/O pair for FlexRay physical layer signaling; short-circuit proof to battery and ground. |
| TXD | Transmit data input | CMOS-level input from protocol controller; internal pull-down ensures safe default state. |
| RXD | Receive data output | CMOS-level output to protocol controller; blocked (HIGH) when RXEN = HIGH (bus idle). |
| RXEN | Receive enable output | Indicates bus activity: LOW = active bus traffic detected; used to gate RXD output. |
| ERRN | Error diagnoses output | Open-drain active-low output reflecting combined error status; supports serial status register read via EN clocking. |
| STBN / EN | Standby / enable inputs | Two-pin mode control interface defining Normal, Receive-only, Standby, Go-to-sleep, and Sleep states per Table 3. |
| BGE / TXEN | Bus guardian enable / transmitter enable | Hardware-controlled transmitter gating: BGE=LOW or TXEN=HIGH disables driver regardless of TXD state. |
| VIO / VCC / VBAT | Independent supply rails | VIO adapts I/O logic levels; VCC powers core logic; VBAT supplies bias and fail-safe circuitry - each monitored separately. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-silent undervoltage response | Automatic entry into Sleep or Standby upon UVVBAT/UVVCC/UVVIO detection - prevents undefined bus behavior during power faults. |
| Auto I/O level adaptation | VIO rail dynamically configures RXD/TXD voltage thresholds - eliminates level-shifter components when interfacing with 3.3 V or 5 V controllers. |
| Dedicated wake-up detection | Low-power receiver monitors BP/BM for standardized wake-up patterns or dedicated FlexRay frames - enables sub-100 µA standby current. |
| Integrated bus guardian interface | BGE pin directly controls transmitter enable path - allows protocol controller to enforce bus arbitration and fault containment. |
| Comprehensive diagnostics | Status register (S0–S12) accessible via ERRN/EN serial interface - reports local/remote wake-up, bus error, overtemperature, and undervoltage flags. |
Applications
| Advanced Driver Assistance Systems (ADAS) | Powertrain Control Units (PCU) |
|---|---|
|
Use Scenario: Synchronized sensor fusion between radar, camera, and lidar modules in autonomous driving domain controllers. IC Role / Device Role / Timing Role: FlexRay physical layer transceiver providing deterministic, low-latency, time-triggered communication between distributed ECUs. Use Value: 10 Mbit/s data rate and 60 ns bit time support precise timestamp alignment across subsystems, critical for closed-loop ADAS decision timing. |
Use Scenario: Real-time coordination of engine, transmission, and hybrid power management in xEV powertrain architectures. IC Role / Device Role / Timing Role: Robust physical interface between FlexRay protocol controller and dual-redundant bus lines in high-vibration, high-temperature environments. Use Value: ±8 kV HBM ESD rating and ISO 7637-2 Class C transient immunity ensure uninterrupted operation during load-dump and jump-start events. |
| Chassis Control Systems | Body Control Modules (BCM) |
|
Use Scenario: Coordinated brake-by-wire, steer-by-wire, and suspension control in centralized vehicle dynamics platforms. IC Role / Device Role / Timing Role: Fail-silent FlexRay node enabling safe degradation during supply faults via UV detection and automatic Sleep mode entry. Use Value: Independent VBAT/VCC/VIO monitoring and instant shut-down via BGE pin allow controlled shutdown without bus contention or false wake-ups. |
Use Scenario: Gateway functionality linking FlexRay backbone with CAN/LIN subnetworks in premium vehicle body electronics. IC Role / Device Role / Timing Role: Low-power FlexRay transceiver supporting always-on wake-up capability while maintaining <100 µA standby current. Use Value: Local wake-up via WAKE pin and remote wake-up via dedicated data frames reduce system-level sleep current and extend battery life in parked state. |
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 | Lacks integrated bus guardian control interface (no BGE pin); supports only Normal and Standby modes - no Go-to-sleep or Sleep mode granularity. | Suitable for simpler FlexRay nodes where protocol-layer bus arbitration is handled externally; not recommended for fail-silent safety-critical paths. | Select TJA1080ATS/0Z only if BGE-based hardware bus guarding and multi-tier low-power states are unnecessary. |
| MC33664AEF | Supports FlexRay V2.1 but omits V3.0.1 features; lower ESD rating (±6 kV HBM); no auto VIO level adaptation - requires external level shifters for mixed-voltage designs. | Targeted at cost-sensitive non-safety applications; lacks wake source recognition and detailed status register (S0–S12) for diagnostic traceability. | Choose MC33664AEF only when full diagnostic visibility, 14/42 V compatibility, and fail-silent behavior are not required. |
Compared with TJA1080ATS/0Z and MC33664AEF, the TJA1081TS,112 uniquely combines V3.0.1-compliant bus guardian control, triple-rail undervoltage monitoring with fail-silent state transitions, and a full diagnostic status register - making it the only option qualified for ASIL-B–capable FlexRay domains requiring hardware-enforced safety mechanisms.
Availability
TJA1081TS,112 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), powertrain control units (PCU), and chassis control systems requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TJA1081TS,112 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 deep expertise in automotive networking and functional safety.
The TJA1081TS,112 belongs to NXP's FlexRay transceiver product line, engineered specifically for time-triggered, safety-critical automotive networks demanding deterministic latency, fault containment, and fail-silent operation in harsh electrical environments.
FAQ
What is the primary compliance standard for the TJA1081TS,112?
The TJA1081TS,112 is fully compliant with the FlexRay electrical physical layer specification V2.1 Rev. A and incorporates selected features from V3.0.1, including enhanced bus guardian control and extended diagnostic capabilities. It is also qualified per AEC-Q100 Grade 1 for automotive use, ensuring reliability across −40 °C to +125 °C ambient temperatures. This dual compliance makes the TJA1081TS,112 suitable for safety-critical FlexRay domains in modern vehicle architectures.
How does the TJA1081TS,112 handle undervoltage conditions on its supply rails?
The TJA1081TS,112 independently monitors VBAT, VCC, and VIO for undervoltage. Detection of UVVBAT forces immediate entry into Sleep mode (INH disabled); UVVCC triggers Standby mode; UVVIO disables TXEN and clamps control inputs. All transitions are fail-silent - the transmitter enters high-impedance state and bus lines behave passively. Recovery resets flags and enables mode reselection via STBN/EN, ensuring predictable restart behavior. This behavior is documented in Sections 6.4 and Table 6 of the TJA1081TS,112 datasheet.
What wake-up mechanisms does the TJA1081TS,112 support?
The TJA1081TS,112 supports both local wake-up via the WAKE pin (with programmable pull-up/pull-down biasing) and remote wake-up via two methods: detection of standardized bus wake-up patterns (consecutive DATA_0 symbols separated by idle/DATA_1 intervals), or reception of dedicated FlexRay data frames emulating those patterns. Wake source recognition is retained in low-power modes and reported via S0/S1 bits in the status register. The TJA1081TS,112 uses these mechanisms to achieve sub-100 µA standby current while maintaining responsiveness - critical for always-on vehicle networks.
Can the TJA1081TS,112 interface directly with a 3.3 V microcontroller?
Yes. The TJA1081TS,112 supports auto I/O level adaptation via the VIO supply rail (2.2 V to 5.25 V). When VIO = 3.3 V, the RXD output and TXD input are automatically configured for 3.3 V logic thresholds, eliminating external level shifters. TXEN, BGE, STBN, and EN inputs also tolerate 3.3 V signals with internal pull-up/pull-down resistors. This feature is explicitly confirmed in Section 2.1 and Table 2 of the TJA1081TS,112 datasheet, enabling seamless integration with modern 3.3 V automotive MCUs.
What diagnostic information is available from the TJA1081TS,112 and how is it accessed?
The TJA1081TS,112 provides a 13-bit status register (S0–S12) readable via the ERRN pin using EN as a clock signal. It reports local/remote wake-up sources, bus error, temperature high/medium flags, TXEN_BGE clamped condition, and undervoltage events (UVVBAT/UVVCC/UVVIO). Each bit maps directly to a hardware flag; ERRN goes LOW when the corresponding bit is set. Status reading is enabled only when VIO is within spec and no undervoltage flags are active - ensuring diagnostic integrity. This serial interface is defined in Section 6.6 and Table 9 of the TJA1081TS,112 datasheet.
TJA1081TS,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- FlexRay
- Voltage - Supply:
- 4.75V ~ 5.25V
- Supplier Device Package:
- 16-SSOP
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
TJA1081TS,112 FAQ
1.How can I place an order for TJA1081TS,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for TJA1081TS,112 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 TJA1081TS,112 reliable?
The price and inventory of TJA1081TS,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1081TS,112 is usually 5 days.
3.What payment methods are accepted for TJA1081TS,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TJA1081TS,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TJA1081TS,112?
TJA1081TS,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TJA1081TS,112 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 TJA1081TS,112?
For technical support, including TJA1081TS,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1081TS,112 requirements.
6.How does Aetrix verify that TJA1081TS,112 is sourced from the original manufacturer or authorized distributors?
All TJA1081TS,112 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 TJA1081TS,112 meets industry standards.
7.What is the process for return or replacement of TJA1081TS,112?
All TJA1081TS,112 units undergo pre-shipment inspection (PSI). If there is an issue with TJA1081TS,112, 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 TJA1081TS,112 part is unused and in its original packaging.
Return procedure for TJA1081TS,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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