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Infineon Technologies TLE8264EXUMA4
- Part No.:
- TLE8264EXUMA4
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized ICs
- Package:
- 36-BSSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
TLE8264EXUMA4.pdf
- Description:
- IC TRANSCEIVER DSO36-38
- Quantity:
- Payment:
- Shipping:
Inventory:1,017
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Product details
Overview
TLE8264EXUMA4 from Infineon Technologies is a universal automotive System Basis Chip (SBC) integrating high-speed CAN transceiver, three LIN transceivers, three LDO voltage regulators (Vcc1µC/Vcc2/Vcc3), SPI interface, watchdog, reset supervisor, wake-up logic, and limp-home output. It operates from 5.5 V to 27 V supply, supports -40 °C to 150 °C ambient, and delivers 200 mA on Vcc1µC at ±2% regulation for microcontroller power. Used in body control modules and gateway ECUs requiring bus communication, low-power sleep modes, and fail-safe operation.
For engineers reviewing the TLE8264EXUMA4 datasheet, TLE8264EXUMA4 pinout, TLE8264EXUMA4 application, or TLE8264EXUMA4 equivalent, key selection criteria include HS-CAN compliance (ISO 11898-2/5), triple-LIN support (LIN2.1/J2602-2), configurable limp-home PWM output, SPI-configurable watchdog timeout (16–1024 ms), and AEC-Q100 qualification for automotive under-hood use.
Technical Context
The TLE8264EXUMA4 implements a multi-state machine with Stop, Sleep, Normal, and Limp Home operational modes, each governed by dedicated SBC mode control bits via SPI. Its CAN transceiver features bus wake-up detection, short-circuit protection to battery and GND, and 8 kV ESD immunity on CANH/CANL/SPLIT pins.
Three independent LIN transceivers comply with LIN2.1 (backward-compatible to LIN1.3/2.0) and SAE J2602-2, supporting up to 20 kBaud standard mode and 115 kBaud flash programming mode. The internal supervision block includes a window watchdog with checksum-protected configuration and an undervoltage reset generator with programmable time-out for Vcc1µC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.5 V to 27 V - supports full automotive battery range including load dump and cold-crank conditions. |
| Vcc1µC Output | 5 V ±2%, 200 mA - powers external MCU and RF receiver with tight regulation for stable digital operation. |
| CAN Data Rate | Up to 1 MBaud - compliant with ISO 11898-2 and ISO 11898-5 for high-speed CAN networks in modern vehicles. |
| LIN Channels | 3 independent LIN2.1 transceivers - enables multi-node body domain control (e.g., door modules, seat controls, lighting). |
| Watchdog Timeout | Configurable from 16 ms to 1024 ms via SPI - provides flexible fault-detection timing for diverse MCU firmware cycles. |
| Limp Home Output | Open-drain, PWM-capable (100 Hz, 20% duty cycle) - delivers fail-safe signaling without external components during critical faults. |
| Operating Temperature | -40 °C to +150 °C - qualified per AEC-Q100 Grade 0 for under-hood and transmission control applications. |
| ESD Immunity | 8 kV HBM on CANH/CANL/SPLIT and LIN bus pins - ensures robustness against electrostatic discharge in assembly and service environments. |
Pinout & Package
Package: PG-DSO-36-38 (36-pin exposed pad SOIC variant with thermal enhancement). Pin count and layout match Infineon's standardized SBC footprint for mechanical and thermal compatibility across HERMES family devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vcc1µC | Main MCU supply regulator output | 5 V ±2%, 200 mA regulated LDO output; powers connected microcontroller and peripherals. |
| Vcc2 | HS-CAN cell supply | 5 V ±2%, 200 mA LDO dedicated to internal CAN transceiver - isolates CAN noise from MCU supply. |
| Vcc3 | External transceiver supply | 5 V ±4% output with shunt-resistor current limiting (up to 400 mA); drives external CAN/LIN transceivers. |
| CANH / CANL | High-speed CAN bus interface | Differential pair compliant with ISO 11898-2; supports wake-up on dominant bus state and short-circuit protection. |
| LIN1–LIN3 | Three LIN bus I/O terminals | Individual bidirectional LIN physical layer interfaces; each supports LIN2.1 protocol and bus wake-up. |
| SPI_MOSI / MISO / SCLK / CSN | SPI serial interface | 16-bit standard SPI for configuration, status readback, and watchdog control; supports daisy-chaining. |
| WK | Wake-up input | Bilevel-sensitive input enabling wake from Stop/Sleep modes via external signal or bus activity. |
| LH_OUT | Limp Home output | Open-drain output with dedicated safety logic; configurable as PWM (100 Hz, 20%) or steady-state indicator. |
Key Features
| Feature | Design Value |
|---|---|
| Triple LIN Transceivers | Enables centralized control of three independent LIN subnetworks (e.g., front door, rear door, sunroof) without external transceivers. |
| Configurable Limp Home Output | Hardware-isolated open-drain output with dedicated safety supply - activates automatically on critical failures (e.g., MCU lockup, Vcc1µC UVLO). |
| Bus-Wake Capability | CAN and LIN buses independently trigger wake-up from Stop/Sleep modes - eliminates need for external wake controllers. |
| Window Watchdog with Checksum | SPI-programmable windowed timeout (16–1024 ms) with checksum-protected register writes - prevents unauthorized or corrupted watchdog reconfiguration. |
| AEC-Q100 Qualified | Grade 0 qualification (-40 °C to +150 °C) confirms suitability for engine bay, transmission, and chassis control units. |
| Low Quiescent Current | ≤ 30 µA in Stop Mode - enables permanent battery connection in always-on automotive systems (e.g., alarm, telematics). |
Applications
| Body Control Module (BCM) | Central Gateway ECU |
|---|---|
|
Use Scenario: Centralized management of door locks, windows, mirrors, interior lighting, and HVAC actuators in mid-tier passenger vehicles. IC Role / Device Role / Timing Role: System Basis Chip providing power, communication (CAN + 3×LIN), supervision, and fail-safe signaling for distributed body electronics. Use Value: Reduces BOM count by integrating three LIN transceivers and dual 5 V regulators - eliminates six discrete transceivers and two external LDOs. |
Use Scenario: Protocol translation and message routing between high-speed CAN backbone (powertrain/chassis) and multiple LIN subnets (sensors, switches, displays). IC Role / Device Role / Timing Role: Gateway SBC managing concurrent CAN and LIN traffic, with SPI-controlled watchdog ensuring deterministic response to network errors. Use Value: Enables seamless interoperability across domains using single-chip solution with hardware-isolated bus interfaces and shared supervision logic. |
| Roof Module Controller | Seat Control Unit |
|
Use Scenario: Sunroof, panoramic roof, and ambient lighting control with integrated rain sensor and anti-pinch functionality. IC Role / Device Role / Timing Role: Power manager and LIN master for roof sensors/actuators, with limp-home output driving emergency open/close indication. Use Value: Limp-home PWM (100 Hz, 20%) provides unambiguous visual feedback during partial failure - avoids ambiguous LED blink patterns. |
Use Scenario: Motorized seat position memory, heating, ventilation, and massage functions coordinated via LIN slave nodes. IC Role / Device Role / Timing Role: LIN master and local power source (Vcc1µC/Vcc2) for seat MCU and motor drivers; wake-up triggered by door-open or key-fob signal. Use Value: Bi-level WK input allows wake from ultra-low-power Stop Mode (<30 µA) using simple switch closure - extends battery life in parked vehicle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE9471-3ES | Single-LIN SBC with integrated 3.3 V/5 V dual LDO, no limp-home output, higher integration of safety monitors (ASIL-B ready). | Targeted at ASIL-B-compliant ADAS domain controllers rather than body/gateway applications requiring multi-LIN and limp-home. | Select when functional safety certification (ISO 26262) is required and LIN count is ≤1. |
| MC33816 | NXP SBC with dual CAN, single LIN, 5 V/3.3 V regulators, and watchdog - lacks limp-home output and triple-LIN capability. | Designed for mid-tier powertrain gateways where dual CAN dominates over LIN expansion. | Select when dual CAN channels and legacy NXP toolchain compatibility outweigh need for 3×LIN or limp-home signaling. |
Compared with TLE9471-3ES and MC33816, the TLE8264EXUMA4 uniquely balances triple-LIN support, hardware limp-home output, and AEC-Q100 Grade 0 rating - making it optimal for cost-sensitive, high-LIN-count body electronics where fail-safe visual indication is mandatory.
Availability
TLE8264EXUMA4 is available at Aetrix Electronics and suitable for body control modules, central gateway ECUs, roof module controllers, and seat control units requiring stable component supply across automotive production lifecycles.
Supply support for TLE8264EXUMA4 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 R&D and manufacturing infrastructure.
The TLE8264EXUMA4 belongs to Infineon's HERMES System Basis Chip family - designed specifically for scalable, software-compatible automotive body and gateway applications requiring integrated power, communication, and safety functions.
FAQ
What is the function of the SPLIT pin on the TLE8264EXUMA4?
The SPLIT pin connects to the common-mode node of the CAN bus termination network and stabilizes common-mode voltage during high-speed CAN communication. It enables improved EMC performance by reducing radiated emissions and enhancing bus noise immunity, especially in electrically noisy automotive environments. The pin must be connected to a 4.7 nF capacitor to ground per the layout guidelines in Section 8.5 of the datasheet.
Can the TLE8264EXUMA4 operate with only one LIN transceiver enabled?
Yes - all three LIN transceivers are individually configurable via SPI registers. Disabling unused LIN channels reduces quiescent current in active mode and simplifies software stack requirements. Each LIN interface retains independent wake-up capability and fault reporting, allowing selective activation based on ECU architecture and network topology.
How does the limp-home output behave during Vcc1µC undervoltage?
When Vcc1µC falls below its undervoltage threshold (4.5 V typical), the limp-home output activates immediately in open-drain mode and can be configured via SPI to drive either a fixed logic-low signal or a 100 Hz PWM waveform with 20% duty cycle. This behavior is hardware-enforced and independent of MCU firmware state, ensuring fail-safe indication even during complete microcontroller failure.
Is the TLE8264EXUMA4 pin-compatible with other HERMES family members?
Yes - the TLE8264EXUMA4 shares identical PG-DSO-36-38 package pinout and electrical characteristics with other HERMES SBCs (e.g., TLE8263E, TLE8262E), enabling hardware reuse across variants. Software compatibility is maintained through identical SPI register maps and state machine definitions, allowing firmware porting with only LIN channel count and limp-home configuration adjustments.
TLE8264EXUMA4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 36-BSSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Transceiver
- Applications:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-36-38
- Grade:
- Automotive
- Qualification:
- -
TLE8264EXUMA4 FAQ
1.How can I place an order for TLE8264EXUMA4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8264EXUMA4 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 TLE8264EXUMA4 reliable?
The price and inventory of TLE8264EXUMA4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8264EXUMA4 is usually 5 days.
3.What payment methods are accepted for TLE8264EXUMA4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8264EXUMA4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8264EXUMA4?
TLE8264EXUMA4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8264EXUMA4 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 TLE8264EXUMA4?
For technical support, including TLE8264EXUMA4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8264EXUMA4 requirements.
6.How does Aetrix verify that TLE8264EXUMA4 is sourced from the original manufacturer or authorized distributors?
All TLE8264EXUMA4 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 TLE8264EXUMA4 meets industry standards.
7.What is the process for return or replacement of TLE8264EXUMA4?
All TLE8264EXUMA4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8264EXUMA4, 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 TLE8264EXUMA4 part is unused and in its original packaging.
Return procedure for TLE8264EXUMA4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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