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Infineon Technologies TLE8457BSJXUMA1
- Part No.:
- TLE8457BSJXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE8457BSJXUMA1.pdf
- Description:
- IC TRANSCEIVER 1/1 PGDSO8
- Quantity:
- Payment:
- Shipping:
Inventory:4,151
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Product details
Overview
TLE8457BSJXUMA1 from Infineon Technologies is a monolithic automotive-grade LIN transceiver with integrated 3.3 V low-dropout voltage regulator (70 mA), compliant with ISO 17987-4, LIN 2.2A, and SAE J2602. It provides bidirectional bus communication, VCC undervoltage reset (NRST), dominant time-out protection on TxD, and ultra-low standby current (20 µA typical). Used in battery-permanently-connected modules such as window lifters and rain sensors.
For engineers reviewing the TLE8457BSJXUMA1 datasheet, TLE8457BSJXUMA1 pinout, TLE8457BSJXUMA1 application, or TLE8457BSJXUMA1 equivalent, key selection criteria include LIN physical layer compliance, integrated LDO output voltage (3.3 V), sleep-mode current (≤16 µA), BUS short-circuit resilience, and AEC-Q100 qualification for automotive environments.
Technical Context
The device integrates a LIN physical layer transceiver and a BiCMOS-based linear regulator with bandgap reference, enabling direct microcontroller supply without external regulators. Its initialization watchdog enforces automatic transition to sleep mode if no valid response occurs after power-up or wake-up.
Operating modes-Normal, Standby, Init, and Sleep-are controlled via EN and TxD pins, with BUS wake-up detection triggering RxD low to signal host MCU. VCC undervoltage detection asserts NRST low for system reset, while overtemperature and short-circuit protections disable the LDO and driver independently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LIN Data Rate | Up to 20 kBit/s - supports full LIN 2.x frame timing and synchronization field detection. |
| VCC Output Voltage | 3.3 V ±2% - stable regulated supply for 3.3 V microcontrollers and peripherals; requires only 1 µF ceramic capacitor. |
| Standby Current | Typ. 20 µA - enables always-on battery-supplied modules without compromising vehicle battery life. |
| Sleep Current | Max. 16 µA - ensures minimal parasitic drain during extended vehicle off-state (e.g., parking mode). |
| ESD Robustness | ±8 kV HBM - meets IEC61000-4-2 Level 4 for reliable operation in noisy automotive harness environments. |
| Bus Fault Protection | BUS short to VBAT/GND tolerant - maintains functionality and prevents latch-up during wiring faults. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for under-hood and cabin applications per automotive reliability standards. |
Pinout & Package
Package: PG-DSO-8 (lead-free, RoHS-compliant, surface-mount SOIC-8 variant with exposed thermal pad not present in this variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VS | Battery supply input | Accepts 5.5–27 V DC; powers internal circuitry and LDO; requires local decoupling capacitor. |
| 2 EN | Enable control input | Pull-down enabled; logic high (≥2.0 V) selects normal operation; low enables standby/sleep. |
| 3 GND | Power and signal reference | Common ground return for VS, VCC, BUS, and digital I/O; must be low-impedance PCB connection. |
| 4 BUS | LIN bus interface | Single-wire bidirectional node; includes integrated slave termination; ESD-protected. |
| 5 RxD | Receive data output | CMOS-level signal reflecting BUS state in normal mode; pulls low to indicate wake-up event in init mode. |
| 6 TxD | Transmit data input | CMOS-level input with internal pull-up; dominant time-out disables driver if held low >150 ms. |
| 7 NRST | Reset output | Open-drain output; pulled low during VCC undervoltage or LDO fault; resets connected MCU. |
| 8 VCC | LDO regulated output | 3.3 V supply output (70 mA max); powers external MCU/peripherals; stable with 1 µF ceramic cap. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3 V LDO regulator | Eliminates need for external regulator; reduces BOM count and PCB area in space-constrained modules. |
| Ultra-low standby current (20 µA) | Enables permanent battery connection in LIN slave nodes without excessive quiescent drain. |
| Dominant time-out on TxD | Prevents bus lock-up by disabling transmitter if microcontroller fails to release dominant state. |
| Automatic init-to-sleep watchdog | Forces safe sleep entry if MCU does not respond within timeout after power-up or wake-up. |
| BUS short-to-rail tolerance | Continues operation despite BUS shorted to VBAT or GND-critical for field-reliability in wiring harnesses. |
Applications
| Window Lifter Control | Rain & Light Sensor Module |
|---|---|
|
Use Scenario: Motorized window lift system with LIN-controlled actuator and position feedback. IC Role / Device Role / Timing Role: LIN transceiver and local 3.3 V power source for MCU and Hall sensor interface. Use Value: Enables single-wire communication and self-contained power delivery, reducing wiring complexity and connector count. |
Use Scenario: Integrated ambient light and rain detection unit mounted behind rearview mirror. IC Role / Device Role / Timing Role: LIN interface and regulated supply for optical sensor ADC and MCU in always-on sensing mode. Use Value: Ultra-low standby current (20 µA) allows continuous monitoring without depleting vehicle battery during long idle periods. |
| Sun Roof Control Module | Wiper Control Unit |
|
Use Scenario: Motor-driven panoramic sun roof with obstacle detection and soft-stop logic. IC Role / Device Role / Timing Role: LIN physical layer transceiver and 3.3 V power source for motor driver MCU and current sense circuitry. Use Value: BUS short-to-rail tolerance ensures continued operation even if sun roof wiring chafes against chassis ground. |
Use Scenario: Multi-speed windshield wiper system with rain-sensing activation and intermittent mode. IC Role / Device Role / Timing Role: LIN interface and local power supply for wiper motor controller MCU and LIN command interpreter. Use Value: VCC undervoltage detection (NRST) guarantees clean MCU reset during battery voltage sag during cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LIN transceiver with integrated LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE8457ASJXUMA1 | 5 V LDO output instead of 3.3 V; identical pinout, package, and functional features. | Requires 5 V MCU or level-shifting; unsuitable for native 3.3 V systems without additional regulation. | Select when interfacing legacy 5 V microcontrollers or peripherals needing higher VCC headroom. |
| TLIN1029DSWR | 3.3 V LDO, but lacks integrated dominant time-out and initialization watchdog; lower ESD rating (±6 kV). | No automatic sleep transition on MCU failure; reduced robustness in harsh ESD environments. | Choose for cost-sensitive non-safety-critical LIN nodes where watchdog and ±8 kV ESD are not mandatory. |
Compared with TLE8457ASJXUMA1, the TLE8457BSJXUMA1 delivers precise 3.3 V regulation for modern low-voltage MCUs, while TLIN1029DSWR trades watchdog safety and ESD margin for lower cost-making TLE8457BSJXUMA1 optimal for AEC-Q100-compliant, fault-resilient LIN slaves.
Availability
TLE8457BSJXUMA1 is available at Aetrix Electronics and suitable for window lifter control, rain/light sensor modules, sun roof control, and wiper control units requiring stable component supply across automotive production lifecycles.
Supply support for TLE8457BSJXUMA1 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 TLE8457B belongs to Infineon's Automotive Transceivers product line, engineered specifically for robust, low-power LIN communication in battery-connected automotive body electronics.
FAQ
What is the maximum allowable BUS capacitance for reliable LIN communication with TLE8457BSJXUMA1?
The device supports up to 1000 pF total BUS capacitance-including cable, connectors, and node inputs-without violating LIN 2.2A rise/fall time requirements. This enables daisy-chained topologies with up to 16 nodes on a single bus segment, provided trace length and stubs remain within ISO 17987-4 impedance guidelines.
Does TLE8457BSJXUMA1 require an external crystal or clock source for LIN timing?
No external clock source is required. The LIN baud rate is derived from an internal oscillator calibrated to ±1.5% accuracy over temperature and voltage, meeting SAE J2602 timing tolerance for 20 kBit/s operation without external timing components.
How does the dominant time-out function protect the LIN bus?
The dominant time-out disables the transmitter driver if TxD remains logic low for longer than 150 ms, preventing indefinite bus dominance that would block communication for all other nodes. Recovery occurs automatically upon TxD returning high, restoring normal transceiver operation without reset.
Can TLE8457BSJXUMA1 operate with a 24 V truck battery system?
Yes. The VS input accepts 5.5–27 V DC, covering 12 V passenger car and 24 V commercial vehicle systems. Internal protection circuitry clamps transients per ISO 7637-2 Pulse 1/2a/3a, ensuring reliable operation during load dump and jump-start events.
TLE8457BSJXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Transceiver
- Protocol:
- LINbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- -
- Receiver Hysteresis:
- 175 mV
- Data Rate:
- -
- Voltage - Supply:
- 3.3V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TLE8457BSJXUMA1 FAQ
1.How can I place an order for TLE8457BSJXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8457BSJXUMA1 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 TLE8457BSJXUMA1 reliable?
The price and inventory of TLE8457BSJXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8457BSJXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE8457BSJXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8457BSJXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8457BSJXUMA1?
TLE8457BSJXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8457BSJXUMA1 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 TLE8457BSJXUMA1?
For technical support, including TLE8457BSJXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8457BSJXUMA1 requirements.
6.How does Aetrix verify that TLE8457BSJXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE8457BSJXUMA1 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 TLE8457BSJXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE8457BSJXUMA1?
All TLE8457BSJXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8457BSJXUMA1, 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 TLE8457BSJXUMA1 part is unused and in its original packaging.
Return procedure for TLE8457BSJXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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