My Inquiry
My Account
Infineon Technologies TLT9251VLEXUMA1
- Part No.:
- TLT9251VLEXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-TDFN Exposed Pad
- Datasheet:
-
TLT9251VLEXUMA1.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 PGTSON81
- Quantity:
- Payment:
- Shipping:
Inventory:19,148
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLT9251VLEXUMA1 from Infineon is a high-speed CAN FD transceiver compliant with ISO 11898-2:2016 and SAE J2284-4/-5, supporting data rates up to 5 MBit/s with guaranteed loop delay symmetry. It features VIO voltage adaptation (3.3 V/5 V), bus wake-up pattern detection (0.5 µs–1.8 µs filter), and AEC-Q100 Grade 0 qualification (−40 °C to +150 °C). Used in automotive HS CAN networks for gateway modules and engine ECUs.
For engineers reviewing the TLT9251VLEXUMA1 datasheet, TLT9251VLEXUMA1 pinout, TLT9251VLEXUMA1 application, or TLT9251VLEXUMA1 equivalent, key selection criteria include CAN FD timing symmetry, ESD robustness (±11 kV IEC 61000-4-2), stand-by quiescent current (<10 µA on VIO), and PG-TSON-8 package compatibility with AOI inspection.
Technical Context
The TLT9251VLEXUMA1 implements dual-receiver architecture-normal-mode and low-power receiver-with wake-up logic filtering and mode multiplexing controlled by STB. Its transmitter uses symmetrical drive circuitry to minimize electromagnetic emission (EME) without requiring external common-mode chokes.
It supports three operational modes: Normal (full TX/RX), Forced Receive-Only (RX only, TX disabled), and Stand-by (VCC off-capable, <10 µA VIO current, wake-up via bus signal). Fail-safe functions include TxD time-out, overtemperature shutdown (170–190 °C), and short-circuit protection to ground, battery, VCC, and VIO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CAN FD Data Rate | Up to 5 MBit/s - enables high-throughput firmware updates and sensor fusion in modern ECUs. |
| Bus ESD Robustness | ±11 kV IEC 61000-4-2 - eliminates need for external TVS diodes in most automotive harness environments. |
| Stand-by VIO Current | <10 µA - extends battery life in always-on vehicle domains (e.g., body electronics during sleep mode). |
| VIO Supply Range | 3.0 V to 5.5 V - allows direct interfacing with both 3.3 V and 5 V microcontrollers without level shifters. |
| Common-Mode Range | −40 V to +40 V - ensures reliable operation under load-dump and jump-start conditions per ISO 7637. |
| Thermal Shutdown Threshold | 170–190 °C - protects against thermal runaway during prolonged overcurrent or ambient overheating. |
| Loop Delay Symmetry | Guaranteed - critical for accurate bit sampling at 5 MBit/s CAN FD, reducing inter-symbol interference. |
Pinout & Package
TLT9251VLEXUMA1 is housed in a leadless PG-TSON-8 package (3.0 mm × 3.0 mm, 0.65 mm pitch) optimized for automated optical inspection (AOI) and RoHS/halogen-free compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 TxD | Transmit Data Input | CMOS input with internal pull-up to VIO; dominant state = logic low; drives TX enable path. |
| 2 GND | Ground Reference | Primary analog/digital return; connects to PCB ground plane; shared with PAD thermal pad. |
| 3 VCC | Transmitter Supply | 4.5–5.5 V supply for CANH/CANL drivers; can be powered down in Stand-by mode to reduce system quiescent power. |
| 4 RxD | Receive Data Output | CMOS output indicating bus state; dominant = low; includes wake-up indication pulse on bus activity. |
| 5 VIO | Digital Supply | 3.0–5.5 V supply for logic interface and low-power receiver; decoupling capacitor required. |
| 6 CANL | CAN Bus Low | Differential bus terminal; "low" during dominant state; internally biased to VCC/2 when inactive. |
| 7 CANH | CAN Bus High | Differential bus terminal; "high" during dominant state; complements CANL for differential signaling. |
| 8 STB | Stand-by Control | Active-low input with internal VIO pull-up; "low" = Normal mode; "high" = Stand-by mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Receiver Architecture | Normal-mode + low-power receiver enables wake-up detection while consuming <10 µA on VIO in Stand-by. |
| Bus Wake-up Pattern Filter | Configurable 0.5 µs–1.8 µs window meets global OEM requirements without external timing components. |
| VCC-Off Capable Stand-by | VCC supply can be disconnected externally during Stand-by, eliminating all transmitter leakage current. |
| Short-Circuit Protection | Robust protection against CANH/CANL shorts to ground, battery, VCC, or VIO - prevents latch-up and damage. |
| TxD Time-Out Function | Auto-disables transmitter after ~1 ms of continuous dominant output - prevents bus lockup from MCU faults. |
Applications
| Powertrain ECU Communication | Automotive Gateway Module |
|---|---|
Use Scenario: Real-time torque and throttle command exchange between engine and transmission ECUs. IC Role / Device Role / Timing Role: Physical layer interface translating MCU CAN controller signals to differential HS CAN bus, ensuring sub-100 ns timing symmetry for 2 MBit/s+ FD frames. Use Value: Guaranteed loop delay symmetry and ±11 kV ESD robustness eliminate bus errors during cold cranking and load dump events. |
Use Scenario: Aggregating CAN FD traffic across multiple vehicle domains (powertrain, chassis, infotainment) before routing to Ethernet backbone. IC Role / Device Role / Timing Role: High-fidelity transceiver enabling simultaneous multi-bus arbitration with minimal jitter and no external choke requirement. Use Value: Very low EME allows dense gateway PCB layouts without violating CISPR 25 Class 5 radiated emissions limits. |
| Body Control Module (BCM) | ADAS Sensor Hub Interface |
Use Scenario: Managing door locks, lighting, and HVAC via low-duty-cycle CAN FD messaging in sleep-aware architectures. IC Role / Device Role / Timing Role: Stand-by mode with wake-up on bus activity enables zero-power monitoring until valid WUP pattern detected. Use Value: Sub-10 µA VIO quiescent current extends vehicle battery life during weeks-long parking periods. |
Use Scenario: Interfacing radar and camera ECUs to central domain controller using time-triggered CAN FD frames. IC Role / Device Role / Timing Role: Precision-matched TX/RX delay paths ensure deterministic latency for safety-critical sensor fusion timing budgets. Use Value: Guaranteed delay symmetry supports 5 MBit/s FD payloads with <1 ns skew - meeting ASIL-B timing integrity requirements. |
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 |
|---|---|---|---|
| NXP TJA1057 | Grade 1 (−40 °C to +125 °C); no VIO pin - fixed 3.3 V logic interface; lower ESD (±8 kV HBM). | Limited to cabin modules; not suitable for under-hood powertrain use above 125 °C. | Select if cost-sensitive and operating temperature stays below 125 °C with 3.3 V MCU only. |
| ST TLE6250G | AEC-Q100 Grade 0; no CAN FD support (max 1 MBit/s); lacks VIO adaptability and WUP filter configurability. | Suitable only for legacy CAN 2.0B networks; cannot handle FD payloads or flexible MCU voltage scaling. | Choose only for brownfield designs requiring drop-in replacement in non-FD systems. |
Compared with TJA1057 and TLE6250G, the TLT9251VLEXUMA1 uniquely combines Grade 0 temperature range, VIO flexibility, 5 MBit/s FD capability, and configurable WUP filtering - making it the only option qualified for next-generation powertrain and ADAS domain controllers requiring full FD timing integrity.
Availability
TLT9251VLEXUMA1 is available at Aetrix Electronics and suitable for automotive powertrain ECUs, gateway modules, and ADAS sensor hubs requiring stable component supply across extended product lifecycles and high-temperature mission profiles.
Supply support for TLT9251VLEXUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and automotive qualification infrastructure.
The TLT9251VLEXUMA1 belongs to Infineon's automotive transceiver product line, designed specifically for high-reliability, high-speed CAN FD communication in demanding under-hood and safety-critical vehicle domains.
FAQ
What is the maximum CAN FD data rate supported by TLT9251VLEXUMA1?
The TLT9251VLEXUMA1 supports CAN FD data rates up to 5 MBit/s, enabled by guaranteed loop delay symmetry between CANH and CANL paths and optimized receiver timing. This performance is validated across the full AEC-Q100 Grade 0 temperature range (−40 °C to +150 °C) and requires proper PCB layout with matched trace lengths and controlled impedance (120 Ω differential).
Does TLT9251VLEXUMA1 require an external common-mode choke?
No - the TLT9251VLEXUMA1 achieves very low electromagnetic emission (EME) through highly symmetrical transmitter output stages and optimized internal biasing, allowing compliance with CISPR 25 Class 5 radiated emissions limits without external common-mode chokes in typical automotive PCB layouts.
How does the STB pin control operating modes?
The STB pin is an active-low input with internal pull-up to VIO: logic low selects Normal-operating mode (full TX/RX), while logic high enters Stand-by mode (VCC may be turned off, VIO remains active for wake-up detection). Mode transition occurs within 1 µs, and wake-up is signaled via a pulse on RxD.
What protection features prevent damage during automotive transients?
The TLT9251VLEXUMA1 integrates protection against ISO 7637-2 pulses (including load dump up to +40 V), SAE J2962-2 battery reverse connection, CAN bus shorts to ground/battery/VCC/VIO, overtemperature (170–190 °C shutdown), and TxD time-out (auto-disable after ~1 ms dominant). All protections operate without external components.
TLT9251VLEXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-TDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- CANbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 30 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, Wettable Flank
- Supplier Device Package:
- PG-TSON-8-1
TLT9251VLEXUMA1 FAQ
1.How can I place an order for TLT9251VLEXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLT9251VLEXUMA1 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 TLT9251VLEXUMA1 reliable?
The price and inventory of TLT9251VLEXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLT9251VLEXUMA1 is usually 5 days.
3.What payment methods are accepted for TLT9251VLEXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLT9251VLEXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLT9251VLEXUMA1?
TLT9251VLEXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLT9251VLEXUMA1 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 TLT9251VLEXUMA1?
For technical support, including TLT9251VLEXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLT9251VLEXUMA1 requirements.
6.How does Aetrix verify that TLT9251VLEXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLT9251VLEXUMA1 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 TLT9251VLEXUMA1 meets industry standards.
7.What is the process for return or replacement of TLT9251VLEXUMA1?
All TLT9251VLEXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLT9251VLEXUMA1, 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 TLT9251VLEXUMA1 part is unused and in its original packaging.
Return procedure for TLT9251VLEXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLT9251VLEXUMA1 Tags
-
ATA6561-GAQW-N
Microchip Technology
-
ATA6561-GBQW-N
Microchip Technology
-
AM26LS32ACDR
Texas Instruments
-
SP485CN-L/TR
MaxLinear, Inc.
-
SP485EN-L/TR
MaxLinear, Inc.
-
SP485EEN-L/TR
MaxLinear, Inc.
-
SP485ECN-L/TR
MaxLinear, Inc.
-
THVD1400DR
Texas Instruments
-
AM26C31IDR
Texas Instruments
-
TLIN1021ADRQ1
Texas Instruments
-
MAX232IDR
Texas Instruments
-
AM26C32IDR
Texas Instruments
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
