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Infineon Technologies TLE7268LCXUMA1
- Part No.:
- TLE7268LCXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 14-TDFN Exposed Pad
- Datasheet:
-
TLE7268LCXUMA1.pdf
- Description:
- IC TRANSCEIVER HALF 2/2 TSON-14
- Quantity:
- Payment:
- Shipping:
Inventory:4,951
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Product details
Overview
TLE7268LCXUMA1 from Infineon Technologies is a dual-channel automotive LIN 2.2 / SAE J2602 transceiver in PG-TSON-14 package, supporting independent bus operation at up to 20 kbps, compliant with ISO 17987-4, and featuring integrated wake-up capability, dominant time-out protection, and bus short-to-VBAT/GND handling. It serves as the physical layer interface between microcontrollers and LIN buses in body control modules.
For engineers reviewing the TLE7268LCXUMA1 datasheet, TLE7268LCXUMA1 pinout, TLE7268LCXUMA1 application, or TLE7268LCXUMA1 equivalent, key selection criteria include dual-channel LIN timing compliance, sleep-mode current (<10 µA), INH-controlled external regulator enable, and AEC-Q100 qualification for harsh automotive environments.
Technical Context
The TLE7268LCXUMA1 integrates two fully independent LIN transceivers sharing only supply (VS) and ground (GND), each with dedicated ENx, TxDx, RxDx, and BUSx pins. Its BiCMOS process enables high ESD robustness (±10 kV IEC61000-4-2) and low electromagnetic emission across battery voltage range.
It supports three operating modes per channel-Normal, Standby, and Sleep-with mode transitions controlled by ENx pins and wake-up detection on either BUS1 or BUS2. The common INH output asserts high when either transceiver is active or in Standby, enabling coordinated power management of external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VS) | 5.5 V to 27 V - supports full automotive battery range including load dump conditions. |
| Sleep Current | <10 µA typical - enables ultra-low-power ECU standby without compromising wake-up responsiveness. |
| Data Rate | Up to 20 kbps - meets LIN 2.2 and SAE J2602 timing requirements for all standard frame lengths. |
| Bus Short Protection | BUSx short to VBAT or GND - prevents latch-up and ensures safe recovery without system reset. |
| ESD Robustness | ±10 kV (IEC61000-4-2), ±8 kV (HBM) - eliminates need for external TVS diodes in most LIN node layouts. |
| Logic Compatibility | 3.3 V and 5 V microcontroller I/O - allows direct connection to mixed-voltage MCU domains without level shifters. |
| Thermal Shutdown | Active overtemperature protection - disables transceiver outputs above 160 °C to prevent thermal runaway. |
Pinout & Package
Package: PG-TSON-14 (exposed pad, thermally enhanced, AOI-compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RxD1 | Receive data output 1 | Open-drain output monitoring BUS1; requires external pull-up; signals wake-up in Standby mode. |
| EN1 | Enable input 1 | Pull-down enabled; logic-high activates transceiver_1 Normal Operation mode. |
| TxD1 | Transmit data input 1 | Pull-up current source; driven low to assert dominant on BUS1; includes dominant time-out safety. |
| N.C. | No connect | Pin 6 - unconnected; must be left floating or tied to GND per layout guidelines. |
| BUS1 | LIN bus interface 1 | Integrated slave termination; bidirectional single-wire physical layer port for LIN network 1. |
| N.C. | No connect | Pin 12 - unconnected; no internal connection; avoid routing traces. |
| INH | Inhibit output | Battery-referenced open-drain output; high when either transceiver is active or in Standby - controls external regulators. |
| VS | Battery supply input | Primary power rail (5.5–27 V); requires 100 nF decoupling capacitor close to pin. |
| BUS2 | LIN bus interface 2 | Integrated slave termination; independent physical layer port for LIN network 2. |
| GND | Ground reference | Analog/digital common return; connects to PCB ground plane with low-inductance path. |
| RxD2 | Receive data output 2 | Open-drain output monitoring BUS2; requires external pull-up; signals wake-up on BUS2. |
| EN2 | Enable input 2 | Pull-down enabled; logic-high activates transceiver_2 Normal Operation mode. |
| TxD2 | Transmit data input 2 | Pull-up current source; driven low to assert dominant on BUS2; includes dominant time-out safety. |
| N.C. | No connect | Pin 14 - unconnected; no internal bond wire; leave unpopulated. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LIN channels | Enables two isolated LIN subnetworks (e.g., front/rear BCM domains) in one IC, reducing BOM count and PCB area. |
| Sub-10 µA sleep current | Allows ECU to meet OEM <15 µA total module sleep budget while retaining bus-wake capability on either channel. |
| Integrated BUSx termination | Eliminates need for external 30 kΩ pull-up resistors on BUS1/BUS2, simplifying layout and improving EMC consistency. |
| INH-controlled power sequencing | Single open-drain INH output coordinates enable/disable timing of external LDOs or DC/DC converters across both LIN domains. |
| AEC-Q100 Grade 1 qualification | Validated for operation from −40 °C to +125 °C ambient, meeting automotive reliability and lifetime requirements. |
Applications
| Body Control Module (BCM) | Roof Module Assembly |
|---|---|
|
Use Scenario: Centralized control unit managing door locks, window lifts, interior lighting, and mirror adjustment via two separate LIN subnets. IC Role / Device Role / Timing Role: Dual-channel LIN physical layer interface - one channel for door nodes, second for lighting/mirror cluster - with synchronized wake-up and shared INH-controlled power domain. Use Value: Reduces component count by replacing two discrete transceivers; maintains <10 µA sleep current across both networks for compliance with OEM low-power specifications. |
Use Scenario: Roof-mounted module integrating sunroof control, ambient lighting, and overhead switch panel communicating over distributed LIN nodes. IC Role / Device Role / Timing Role: LIN transceiver bridging master MCU to two physically separated LIN branches - one for sunroof actuator, one for LED driver nodes - with independent ENx control. Use Value: Enables localized wake-up (e.g., sunroof motion triggers BUS1 wake, lighting command triggers BUS2 wake) without waking entire module. |
| Seat Control Unit | Gateway Subnode |
|
Use Scenario: Driver seat ECU coordinating position memory, heating, and lumbar support functions using multiple LIN slave sensors and actuators. IC Role / Device Role / Timing Role: Dual LIN PHY providing isolated communication paths - one for seat position sensors, one for heater/actuator drivers - with independent dominant time-out per channel. Use Value: Prevents single-point failure propagation; a stuck-dominant fault on heater bus does not disrupt position sensor reporting. |
Use Scenario: Low-cost gateway node translating between CAN backbone and two LIN subnetworks (e.g., HVAC and climate sensors). IC Role / Device Role / Timing Role: LIN interface for bridging protocol controller to two independent LIN clusters, with INH output enabling/disabling auxiliary CAN transceiver power. Use Value: Simplifies power architecture by using single INH signal to gate both LIN transceivers and downstream CAN PHY, reducing quiescent current in sleep state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel LIN transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLIN2022DRBR | Single-channel, 20 kbps, 5 V only logic, no INH output, smaller WSON-8 package | Requires two units for dual-bus implementation; lacks coordinated power control and shared wake-up logic | Select when space-constrained and dual-channel integration is unnecessary; verify external wake coordination logic. |
| UJA1075ATW/3V3/1J | Dual-channel, but supports LIN 2.1 only; higher sleep current (25 µA); no BUSx short-to-VBAT protection | Not compliant with latest SAE J2602; requires external protection for battery fault conditions | Acceptable for legacy LIN 2.1 designs where cost is prioritized over latest spec compliance and fault robustness. |
Compared with TLIN2022DRBR and UJA1075ATW/3V3/1J, the TLE7268LCXUMA1 uniquely delivers AEC-Q100 Grade 1 dual-channel LIN 2.2 compliance with integrated INH control, sub-10 µA sleep, and full bus fault protection - making it optimal for new-generation BCM and roof module designs requiring functional safety and power efficiency.
Availability
TLE7268LCXUMA1 is available at Aetrix Electronics and suitable for Body Control Modules, Roof Modules, Seat Control Units, and Gateway Subnodes requiring stable component supply, AEC-Q100 qualification, and dual-LIN channel integration.
Supply support for TLE7268LCXUMA1 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 core expertise in high-reliability analog and mixed-signal devices.
The TLE7268 belongs to Infineon's automotive transceiver product line, engineered specifically for robust, low-power LIN communication in body electronics - emphasizing EMC resilience, fault tolerance, and seamless integration with 3.3 V/5 V microcontrollers.
FAQ
What is the function of the INH pin on the TLE7268LCXUMA1?
The INH (Inhibit) pin is an open-drain, battery-referenced output that goes high whenever either transceiver channel is in Normal Operation or Standby mode. It is designed to directly control external voltage regulators or power switches, enabling coordinated power sequencing across the ECU. Its state reflects the aggregate activity of both LIN channels, eliminating need for external OR logic.
Does the TLE7268LCXUMA1 require external pull-up resistors on RxD1 and RxD2?
Yes - RxD1 and RxD2 are open-drain outputs and require external pull-up resistors (typically 10 kΩ to VS) to establish valid logic-high levels for the microcontroller. This is explicitly specified in the datasheet's pin definitions and application examples, and omission will result in undefined receive states during recessive bus periods.
How does the TLE7268LCXUMA1 handle bus short-circuit faults?
The device provides dedicated protection against BUS1 and BUS2 short circuits to VBAT or GND. During such faults, internal current limiting and thermal foldback engage to prevent damage, and the transceiver automatically recovers once the fault is removed - without requiring reset or mode reinitialization. This behavior is verified per ISO 17987-4 fault tolerance requirements.
Can both transceiver channels operate at different data rates simultaneously?
No - the TLE7268LCXUMA1 does not support independent data rate configuration. Both channels share identical timing characteristics and are designed for synchronous operation at the same baud rate (up to 20 kbps), as required by LIN 2.2 and SAE J2602 specifications for multi-drop network coherence.
TLE7268LCXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-TDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- LIN
- Number of Drivers/Receivers:
- 2/2
- Duplex:
- Half
- Receiver Hysteresis:
- 200 mV
- Data Rate:
- 20kbps
- Voltage - Supply:
- 5.5V ~ 18V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- PG-TSON-14-3
TLE7268LCXUMA1 FAQ
1.How can I place an order for TLE7268LCXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE7268LCXUMA1 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 TLE7268LCXUMA1 reliable?
The price and inventory of TLE7268LCXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE7268LCXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE7268LCXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE7268LCXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE7268LCXUMA1?
TLE7268LCXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE7268LCXUMA1 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 TLE7268LCXUMA1?
For technical support, including TLE7268LCXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE7268LCXUMA1 requirements.
6.How does Aetrix verify that TLE7268LCXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE7268LCXUMA1 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 TLE7268LCXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE7268LCXUMA1?
All TLE7268LCXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE7268LCXUMA1, 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 TLE7268LCXUMA1 part is unused and in its original packaging.
Return procedure for TLE7268LCXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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