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Infineon Technologies TLE8457CSJXUMA1
- Part No.:
- TLE8457CSJXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE8457CSJXUMA1.pdf
- Description:
- IC TRANSCEIVER 1/1 PGDSO8
- Quantity:
- Payment:
- Shipping:
Inventory:2,461
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Product details
Overview
TLE8457CSJXUMA1 from Infineon is a monolithic automotive-grade LIN transceiver with integrated 5 V / 70 mA LDO regulator, compliant to ISO 17987-4 and SAE J2602, supporting up to 20 kBit/s data rate, ultra-low 20 µA standby current, and VCC undervoltage reset (NRST) - deployed in battery-permanently-connected window lifter and rain sensor modules.
For engineers reviewing the TLE8457CSJXUMA1 datasheet, TLE8457CSJXUMA1 pinout, TLE8457CSJXUMA1 application, or TLE8457CSJXUMA1 equivalent, key selection criteria include LIN physical layer compliance, integrated LDO output stability with 1 µF ceramic capacitor, bus wake-up capability in standby mode, and AEC-Q100 qualification for automotive body electronics.
Technical Context
The device integrates a LIN physical layer transceiver and linear voltage regulator on a single BiCMOS die, enabling direct microcontroller supply and bus communication without external regulators or discrete protection circuitry. It implements dominant time-out on TxD, BUS short-to-VBAT/GND recovery, and overtemperature shutdown with hysteresis.
Operating modes - Normal, Standby, and Sleep - are controlled via EN and TxD pins, with automatic bus wake-up detection in Standby mode signaled through RxD low pulse. NRST asserts low during VCC undervoltage (VCC < 4.4 V typ.) and remains low for tRST (10 ms min.) after recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LIN Data Rate | Up to 20 kBit/s - supports full LIN 2.2A timing budget including sync field, PID, and checksum fields. |
| VCC Output Voltage | 5.0 V ±2% - regulated output stable with ≥1 µF ceramic capacitor; supplies MCU and peripherals directly. |
| Standby Current | Typ. 20 µA - enables always-on LIN slave operation without draining vehicle battery during ignition-off. |
| Sleep Current | Max. 16 µA - lowest power state with both transceiver and LDO disabled; wake-up only via EN pin. |
| ESD Robustness | ±8 kV HBM - meets IEC61000-4-2 Level 4; eliminates need for external TVS on BUS line in most layouts. |
| Bus Wake-up Sensitivity | Detects LIN header (0x80) or dominant pulse ≥150 µs - ensures reliable wake-up from standby without false triggers. |
| Thermal Shutdown | Activates at Tj > 160 °C with 15 °C hysteresis - protects against latch-up during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: PG-DSO-8 (lead-free, RoHS-compliant, 8-pin SOIC variant with exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VS | Battery supply input | Accepts 5.5–27 V DC; requires local decoupling capacitor; powers internal LDO and transceiver core. |
| 2 EN | Enable control input | Pull-down enabled; logic high (>2.0 V) activates normal operation; low forces standby/sleep depending on TxD state. |
| 3 GND | Power and signal reference | Common return path for VS, VCC, BUS, and digital I/O; must be low-inductance connection to minimize EMC noise. |
| 4 BUS | LIN bus interface | Single-wire bidirectional node; includes integrated slave termination resistor; ESD-protected to ±8 kV. |
| 5 RxD | Receive data output | Reflects LIN bus signal in normal mode; pulses low for 100 µs to signal bus wake-up event in standby mode. |
| 6 TxD | Transmit data input | Microcontroller-driven; internal pull-up to VCC; dominant timeout disables transmitter if held low >1.5 s. |
| 7 NRST | Reset output | Open-drain active-low signal; asserts during VCC undervoltage (VCC < 4.4 V); tRST = 10 ms minimum pulse width. |
| 8 VCC | LDO regulated output | 5 V / 70 mA max; stable with 1 µF X7R ceramic capacitor; powers external MCU and peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5 V / 70 mA LDO | Eliminates external regulator; reduces BOM count and PCB area; supports MCU sleep/stop modes with stable VCC. |
| VCC undervoltage reset (NRST) | Ensures deterministic MCU reset before VCC drops below functional range; avoids undefined firmware behavior. |
| Bus wake-up in standby mode | Enables zero-power LIN slave operation - microcontroller remains off until valid LIN header detected on BUS. |
| Dominant time-out on TxD | Prevents bus lock-up by disabling transmitter if TxD held low >1.5 s; recovers automatically after timeout. |
| Short-circuit protection | Withstands BUS short to VBAT or GND indefinitely; resumes normal operation after fault removal without reset. |
Applications
| Window Lifter Module | Rain & Light Sensor |
|---|---|
|
Use Scenario: Motorized glass lift control with position feedback and anti-pinch detection. IC Role / Device Role / Timing Role: LIN transceiver interfaces MCU to vehicle body control module (BCM); LDO powers MCU and Hall sensor. Use Value: Ultra-low standby current (<20 µA) prevents parasitic drain during vehicle sleep; NRST ensures safe MCU restart after battery voltage sag. |
Use Scenario: Integrated optical sensor detecting ambient light intensity and rain droplet impact. IC Role / Device Role / Timing Role: LIN slave node providing sensor data to central gateway; operates in permanent battery-supplied standby. Use Value: Bus wake-up capability allows MCU to remain powered down until valid LIN header received - extending sensor node lifetime. |
| Sun Roof Control Module | Wiper Control Module |
|
Use Scenario: Bidirectional motor control for sliding/retractable sun roof with obstacle detection. IC Role / Device Role / Timing Role: LIN physical layer interface and local 5 V power source for MCU and motor driver logic. Use Value: Integrated short-to-VBAT/GND protection prevents damage during wiring faults or service disconnects. |
Use Scenario: Variable-speed wiper actuation synchronized to rain intensity and vehicle speed. IC Role / Device Role / Timing Role: LIN slave transceiver with embedded LDO supplying MCU and analog front-end ADC reference. Use Value: ±8 kV ESD robustness eliminates need for external protection on BUS line - reducing layout complexity and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LIN transceiver with integrated regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLIN1029DR | 3.3 V LDO output; supports 125 °C junction temp; no integrated BUS termination. | Requires external 12 kΩ slave termination; better suited for high-temp under-hood nodes. | Select when system MCU requires 3.3 V supply and higher ambient temperature rating is mandatory. |
| ATA663211-GAQW | 5 V LDO; 100 mA output; includes LIN wake-up filter; no NRST output. | Lacks dedicated reset output - MCU must monitor VCC externally or use internal brown-out detection. | Choose when higher current drive (100 mA) is needed and system-level reset management is already implemented. |
Compared with TLIN1029DR and ATA663211-GAQW, TLE8457CSJXUMA1 uniquely combines 5 V/70 mA regulation, integrated BUS termination, NRST output, and ≤20 µA standby current - making it optimal for cost-sensitive, space-constrained body electronics where deterministic reset and minimal external components are critical.
Availability
TLE8457CSJXUMA1 is available at Aetrix Electronics and suitable for window lifter modules, rain/light sensors, and sun roof control systems requiring stable component supply across automotive production lifecycles.
Supply support for TLE8457CSJXUMA1 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 industrial control solutions, with global manufacturing and quality certification aligned to IATF 16949.
TLE8457CSJXUMA1 belongs to Infineon's Automotive Transceivers product line, engineered specifically for LIN-based body electronics nodes demanding AEC-Q100 reliability, ultra-low quiescent power, and integrated power + communication functionality.
FAQ
What is the minimum VS supply voltage required for TLE8457CSJXUMA1 to enter normal operation mode?
The device requires VS ≥ 5.5 V to guarantee reliable startup and VCC regulation. Below this threshold, the internal bandgap reference may not stabilize, causing erratic NRST behavior and failure to assert valid VCC. The VS undervoltage detection threshold is 4.8 V (typ.), but functional operation begins only above 5.5 V per datasheet Section 5.2.
Can TLE8457CSJXUMA1 operate without an external crystal or oscillator?
Yes - it contains no internal clock generation circuitry requiring external timing components. The LIN baud rate is derived from the host MCU's UART clock; the transceiver itself is asynchronous and does not depend on any external or internal oscillator for physical layer operation.
Is the BUS pin internally terminated, and what is the resistance value?
Yes, the BUS pin includes an integrated 12 kΩ slave termination resistor to GND, compliant with LIN specification 2.2A requirements for slave nodes. This eliminates the need for an external resistor in standard implementations, reducing component count and board space.
Does TLE8457CSJXUMA1 support LIN partial networking or sleep/wake-up via LIN header only?
No - it does not implement partial networking. Wake-up is triggered exclusively by detection of a valid LIN header (0x00 or 0x80) on the BUS line while in Standby mode. The device does not decode PID or data fields for wake-up; only header recognition is performed in hardware.
TLE8457CSJXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- LIN
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- -
- Receiver Hysteresis:
- -
- Data Rate:
- 20kbps
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TLE8457CSJXUMA1 FAQ
1.How can I place an order for TLE8457CSJXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8457CSJXUMA1 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 TLE8457CSJXUMA1 reliable?
The price and inventory of TLE8457CSJXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8457CSJXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE8457CSJXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8457CSJXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8457CSJXUMA1?
TLE8457CSJXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8457CSJXUMA1 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 TLE8457CSJXUMA1?
For technical support, including TLE8457CSJXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8457CSJXUMA1 requirements.
6.How does Aetrix verify that TLE8457CSJXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE8457CSJXUMA1 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 TLE8457CSJXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE8457CSJXUMA1?
All TLE8457CSJXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8457CSJXUMA1, 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 TLE8457CSJXUMA1 part is unused and in its original packaging.
Return procedure for TLE8457CSJXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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