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Home > Products > Integrated Circuits (ICs) > Interface > Drivers, Receivers, Transceivers

Infineon Technologies TLE7257LEXUMA1

Name: TLE7257LEXUMA1
Brand: Infineon Technologies
SKU: TLE7257LEXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE7257LEXUMA1

Manufacturer:: Infineon Technologies

Category:: Drivers, Receivers, Transceivers

Package:: 8-TDFN Exposed Pad

Datasheet:: TLE7257LEXUMA1.pdf

Description:: IC TRANSCEIVER 1/1 PGTSON81

Quantity:: RFQ Add To RFQ list

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Inventory:1,702

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Product details

Overview

TLE7257LEXUMA1 from Infineon Technologies is an AEC-Q100 qualified LIN transceiver for automotive local interconnect networks, supporting up to 20 kbps data rate, compliant with ISO 17987-4 and SAE J2602, featuring Sleep mode current <10 µA, BUS short-to-VBAT/GND protection, and 3.3 V/5 V logic compatibility. It serves as the physical layer interface between microcontroller UART and single-wire LIN bus in body electronics modules.

For engineers reviewing the TLE7257LEXUMA1 datasheet, TLE7257LEXUMA1 pinout, TLE7257LEXUMA1 application, or TLE7257LEXUMA1 equivalent, key selection criteria include LIN bus wake-up sensitivity, dominant time-out behavior, INH-controlled external regulator sequencing, and PG-TSON-8 thermal performance in constrained ECU layouts.

Technical Context

The TLE7257LEXUMA1 implements a BiCMOS-based LIN physical layer with integrated driver/receiver, wake-up receiver, and mode control logic. Its EN pin governs Normal/Standby/Sleep transitions, while INH provides battery-referenced enable signaling for external power management.

It features a BUS pin with integrated slave termination, RxD with internal RF filter for noise immunity, and TxD with dominant time-out and state-check after mode change. The device supports LIN master configuration via external 1 kΩ + diode termination and meets ISO 7637-2 transient robustness and IEC61000-4-2 ±10 kV ESD requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 20 kbps - Enables full compliance with LIN 2.2A timing budgets for body control messaging.
Sleep Current	<10 µA typical - Allows permanent battery connection in always-on vehicle domains without excessive drain.
BUS Leakage	<1 µA at 25 °C - Supports partial network supply schemes where only wake-capable nodes remain active.
ESD Robustness	±10 kV HBM (IEC61000-4-2) - Eliminates need for external TVS on LIN bus in most automotive harness environments.
Supply Range	5.5 V to 27 V - Covers cold-crank (5.5 V) to load-dump (27 V) conditions without external regulation.
Logic Compatibility	3.3 V and 5 V MCU I/O - Direct interfacing with both legacy and modern automotive microcontrollers without level shifters.
Thermal Shutdown	165 °C activation - Protects against latch-up during sustained overcurrent or ambient overheating in sealed ECUs.

Pinout & Package

Package: PG-TSON-8 (leadless, exposed thermal pad), RoHS-compliant, AEC-Q100 qualified. Thermal pad (PAD1) must be connected to PCB ground plane for optimal junction temperature control.

Pin/Terminal	Circuit Role	Design Meaning
RxD	Receiver output	Open-drain output requiring external pull-up; reflects bus state to MCU with RF filtering for EMC immunity.
EN	Enable input	Integrated pull-down; high-level entry into Normal Operation mode, controls all functional states.
N.C.	No connect	Internally unconnected pin; no PCB trace or solder required.
TxD	Transmit input	Internal pull-up current source; low-level assertion drives dominant bus state; includes time-out safety.
GND	Ground reference	Primary signal and power return; connects to thermal pad (PAD1) for heat dissipation.
BUS	Single-wire LIN bus interface	Integrated slave termination; handles short-to-VBAT/GND faults; bidirectional signal path.
V_S	Battery supply input	Requires 100 nF decoupling capacitor; powers internal regulator and driver stages across full automotive range.
INH	Inhibit output	Battery-referenced open-drain output; enables/disable external voltage regulators in sync with transceiver mode.

Key Features

Feature	Design Value
Dominant time-out protection	Prevents bus lock-up by forcing recessive state if TxD remains low beyond programmable timeout window.
Wake-up capable Sleep mode	Detects LIN bus activity while drawing <10 µA, enabling fast system wake without MCU polling.
INH-controlled power sequencing	Drives external LDOs or DC/DC converters only during Normal/Standby modes, reducing standby power.
Integrated BUS termination	Eliminates need for external 30 kΩ slave resistor, simplifying layout and improving signal integrity.
Automated Optical Inspection (AOI) support	PG-TSON-8 package geometry and pad layout optimized for post-reflow solder joint inspection.

Applications

Door Module Control

Roof Console Interface

Use Scenario: Centralized control of power windows, locks, and mirrors via LIN slave node.

IC Role / Device Role / Timing Role: Physical layer transceiver translating MCU UART frames to single-wire LIN bus signals with precise dominant/recessive timing.

Use Value: Low Sleep current extends battery life during vehicle off-state; BUS short-circuit resilience prevents module failure from wiring faults.

Use Scenario: Integration of ambient lighting, sunroof control, and map light switches into roof-mounted LIN node.

IC Role / Device Role / Timing Role: LIN bus interface with wake-up capability enabling responsive user interaction without continuous MCU activity.

Use Value: ±10 kV ESD rating eliminates external protection components; PG-TSON-8 thermal pad ensures stable operation under cabin temperature extremes.

Seat Position Memory

Trunk Release Actuator

Use Scenario: LIN-connected seat ECU storing and recalling multi-position memory settings via body controller.

IC Role / Device Role / Timing Role: Reliable physical layer link maintaining 20 kbps frame integrity across vibration-prone seat harnesses.

Use Value: ISO 7637-2 transient immunity prevents communication loss during load dump events; INH output sequences seat motor driver power.

Use Scenario: Electromechanical trunk latch controlled via LIN command from convenience module.

IC Role / Device Role / Timing Role: Fault-tolerant bus interface handling intermittent connections and high-impedance harness conditions.

Use Value: <1 µA BUS leakage allows partial network operation; dominant time-out prevents latch engagement failure due to MCU hang.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LIN transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLIN1029QDRBRQ1	Higher ESD (±15 kV), integrated V_IO regulator for flexible logic levels, but larger SOIC-8 package.	Preferred for new designs requiring extended ESD margin and mixed-voltage MCU interfaces.	Select when board space permits larger footprint and higher ESD robustness is critical for exterior modules.
ATA663211-GBAQW	Lower Sleep current (3 µA), integrated watchdog timer, but lacks INH output and requires external termination.	Suitable for ultra-low-power sensor nodes where external regulator control is unnecessary.	Choose for battery-powered LIN sensors where INH functionality is unused and minimum quiescent current is prioritized.

Compared with TLIN1029QDRBRQ1 and ATA663211-GBAQW, the TLE7257LEXUMA1 uniquely balances compact PG-TSON-8 thermal performance, INH-driven power sequencing, and proven field reliability in body control units-making it optimal for space-constrained, thermally demanding ECUs requiring coordinated subsystem power management.

Availability

TLE7257LEXUMA1 is available at Aetrix Electronics and suitable for door modules, roof consoles, seat position memory systems, and trunk release actuators requiring stable component supply across automotive production lifecycles.

Supply support for TLE7257LEXUMA1 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 TLE7257LEXUMA1 belongs to Infineon's automotive LIN transceiver product line, engineered specifically for robust, low-power, single-wire communication in body electronics ECUs operating under harsh automotive environmental and electrical conditions.

FAQ

What is the function of the INH pin on the TLE7257LEXUMA1?

The INH (Inhibit) pin is a battery-referenced open-drain output that goes active-high during Normal and Standby modes. It is designed to directly enable external voltage regulators or DC/DC converters, allowing the transceiver to coordinate power delivery to associated MCU peripherals only when LIN communication is active or ready-reducing system-level standby power consumption.

Does the TLE7257LEXUMA1 require an external pull-up resistor on the RxD pin?

Yes, the RxD pin is an open-drain output and requires an external pull-up resistor (typically 10 kΩ to V_IO) to establish a valid logic-high level when the bus is recessive. This pull-up also enables wake-up detection in Standby mode, where RxD transitions low upon bus activity to signal the MCU.

How does the TLE7257LEXUMA1 handle bus short-circuit conditions?

The TLE7257LEXUMA1 detects and withstands both BUS-to-VBAT and BUS-to-GND shorts. During a short-to-VBAT, internal circuitry limits current and maintains functional isolation; during a short-to-GND, the driver enters safe shutdown while preserving receiver wake-up capability. Thermal shutdown activates if junction temperature exceeds 165 °C.

Can the TLE7257LEXUMA1 be used in a LIN master node configuration?

Yes, but requires external components: a 1 kΩ pull-up resistor and a diode connected between BUS and V_S. This configuration satisfies LIN master termination requirements per ISO 17987-4. The transceiver itself operates identically in master/slave roles-the distinction is implemented externally via termination topology.

TLE7257LEXUMA1 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:: LINbus

Number of Drivers/Receivers:: 1/1

Duplex:: -

Receiver Hysteresis:: 500 mV

Data Rate:: 20kbps

Voltage - Supply:: 5.5V ~ 18V

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: PG-TSON-8-1

TLE7257LEXUMA1 FAQ

1.How can I place an order for TLE7257LEXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE7257LEXUMA1 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 TLE7257LEXUMA1 reliable?

The price and inventory of TLE7257LEXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE7257LEXUMA1 is usually 5 days.

3.What payment methods are accepted for TLE7257LEXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE7257LEXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE7257LEXUMA1?

TLE7257LEXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE7257LEXUMA1 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 TLE7257LEXUMA1?

For technical support, including TLE7257LEXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE7257LEXUMA1 requirements.

6.How does Aetrix verify that TLE7257LEXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE7257LEXUMA1 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 TLE7257LEXUMA1 meets industry standards.

7.What is the process for return or replacement of TLE7257LEXUMA1?

All TLE7257LEXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE7257LEXUMA1, 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 TLE7257LEXUMA1 part is unused and in its original packaging.

Return procedure for TLE7257LEXUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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