TLE8457ALEXUMA2 - Automotive LIN Transceiver | Infineon
MPN: TLE8457ALEXUMA2 ✓ ActiveTLE8457ALEXUMA2 Overview
A LIN transceiver, also called a Local Interconnect Network transceiver, connects a microcontroller or other logic device to a single-wire vehicle bus. In the broader electronics hierarchy, it belongs to the LIN physical-layer interface IC category, within interface ICs and automotive communication semiconductors. It converts logic-level signals into physical LIN bus signals and receives bus states for the host controller.
The TLE8457ALEXUMA2 uses a 1/1 driver-receiver configuration. Its integrated supply capability can provide a microcontroller and associated peripherals with up to 70 mA, reducing the number of external power components needed in a LIN node. The device also includes undervoltage-reset protection through its VCC supply function, supporting controlled microcontroller operation when the logic supply is outside its valid operating range.
Bus compatibility is a central design consideration for automotive electronics. The Infineon TLE8457A/TLE8457B datasheet identifies compliance with LIN specification 2.2A and SAE J2602, allowing the interface to be used in systems designed around established vehicle-network requirements. Bidirectional communication enables the transceiver to both transmit controller commands and report bus states back to the host.
Typical uses include LIN-controlled vehicle body electronics, door and seat modules, climate-control peripherals, lighting controllers, sensor interfaces, and gateway nodes. The 150 °C upper operating-temperature limit supports applications exposed to elevated temperatures inside automotive enclosures, while the PG-TSON-8-1 package supports compact surface-mount PCB construction.
Design the LIN bus connection around the manufacturer’s recommended transceiver, pull-up, load-capacitance, and protection arrangements. Confirm that the logic supply, bus supply, ground reference, and microcontroller interface levels meet the device limits. Treat the 70 mA auxiliary output as a budget for the attached MCU and peripherals rather than as additional LIN-bus current capacity.
This page consolidates the manufacturer’s electrical limits, package information, interface standards, application guidance, and sourcing workflow. It also distinguishes verified drop-in replacements from merely similar automotive interface products, helping engineers select a part that preserves both PCB footprint and communication requirements.
Drop-in alternatives for TLE8457ALEXUMA2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesTLE8457ALEXUMA2 Specifications
| Product Type | LIN transceiver |
| Driver/Receiver Configuration | 1/1 |
| Low Supply Voltage Range | 3 V to 28 V |
| Extended Supply Voltage Range | 5.5 V to 40 V |
| Auxiliary Output Current | Up to 70 mA |
| Operating Temperature Range | -40 °C to 150 °C |
| LIN Specification Compliance | LIN specification 2.2 A |
| Automotive Network Compliance | SAE J2602 compliant |
| Bus Communication | Bidirectional |
| Package | PG-TSON-8-1 |
| Package Pin Count | 8 pins |
| Mounting Type | Surface mount |
| Supply Protection | VCC undervoltage reset |
TLE8457ALEXUMA2 8 pins Pin Configuration Guide
Pin configuration for TLE8457ALEXUMA2 (8 pins package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for TLE8457ALEXUMA2.
Refer to the datasheet for full pin configuration.
Typical Applications
TLE8457ALEXUMA2 is suitable for 6 applications: Automotive LIN Body-Control Nodes, Door and Seat Control Modules, Climate-Control Peripheral Interface, Vehicle Lighting Control, Automotive Sensor and Gateway Interfaces, Industrial and Robotics LIN Network Interfaces.
Automotive LIN Body-Control Nodes
The TLE8457ALEXUMA2 fits compact body-control modules that communicate through a LIN vehicle network. Its bidirectional 1/1 driver-receiver configuration supports both command transmission and bus-state reception, while operation from -40 °C to 150 °C covers demanding automotive interiors. The Infineon TLE8457A/TLE8457B datasheet identifies LIN 2.2A and SAE J2602 compliance, allowing the interface to be evaluated against established network requirements. Its up-to-70-mA auxiliary output can also power a suitable microcontroller and limited peripherals, reducing local supply complexity.
Recommended
Door and Seat Control Modules
The TLE8457ALEXUMA2 is appropriate for distributed door, seat, and adjustment modules that exchange commands and sensor status over a LIN bus. Bidirectional communication allows the host controller to drive actuators or indicators and receive sensed position or switch information. The device operates from -40 °C to 150 °C and offers supply ranges of 3 V to 28 V and 5.5 V to 40 V, supporting different automotive power environments when each rail is connected according to the manufacturer’s recommended schematic.
Recommended
Climate-Control Peripheral Interface
The TLE8457ALEXUMA2 can connect a climate-control peripheral to a LIN-based vehicle network while consolidating its communication and auxiliary supply needs. The 1/1 transceiver configuration supports one LIN channel, and the integrated supply path can deliver up to 70 mA to an appropriate controller and peripheral load. With operation extending to 150 °C, the interface suits enclosed automotive electronics where ambient temperatures can rise. Validate the final thermal environment and bus loading against the manufacturer’s application circuit.
Recommended
Vehicle Lighting Control
The TLE8457ALEXUMA2 is suitable for LIN-connected lighting controllers that need a compact, robust vehicle-network interface. Bidirectional bus communication lets a host controller command a lamp function and obtain diagnostic or switch-state information. Its PG-TSON-8-1 package conserves PCB area, while its -40 °C to 150 °C operating range supports automotive placement. The 70 mA auxiliary supply capability must be budgeted with the controller and attached loads rather than used as unrestricted bus-current capacity.
Recommended
Automotive Sensor and Gateway Interfaces
The TLE8457ALEXUMA2 can bridge a microcontroller to a LIN-connected sensor or gateway peripheral while providing a regulated auxiliary output of up to 70 mA where the load budget permits. LIN 2.2A and SAE J2602 compliance provide useful interface criteria when designing around recognized vehicle-network requirements. The 1/1 configuration means each device addresses one bus channel, so multi-channel architectures require additional transceivers. Keep the host interface, bus protection, and supply arrangement within the manufacturer’s recommended application circuit.
Recommended
Industrial and Robotics LIN Network Interfaces
The TLE8457ALEXUMA2 can be evaluated for LIN-based industrial or robotic subsystems where a compact, temperature-tolerant single-wire bus interface is useful. Its bidirectional 1/1 configuration supports command and status traffic, and its 3 V to 28 V or 5.5 V to 40 V supply ranges cover multiple low-voltage systems. The device’s LIN 2.2A and SAE J2602 heritage is especially relevant to automotive-derived networks. For non-automotive installations, confirm electromagnetic, environmental, and qualification requirements separately.
Recommended
Recommended Products Summary
Engineering reference data for TLE8457ALEXUMA2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | PG-TSON-8-1 |
| Brand | Infineon Technologies |
| Driver/Receiver Configuration | 1/1 |
| Low Supply Voltage Range | 3 V to 28 V |
| Extended Supply Voltage Range | 5.5 V to 40 V |
| Auxiliary Output Current | Up to 70 mA |
| Operating Temperature Range | -40 °C to 150 °C |
| LIN Specification | LIN specification 2.2 A |
| Automotive Network Compliance | SAE J2602 compliant |
| Bus Communication | Bidirectional |
Design Notes
Use the Infineon recommended application circuit to distinguish the logic-side VCC domain from the LIN-side supply and connect the undervoltage-reset function correctly. Budget the auxiliary output against the 70 mA maximum, including the host MCU and attached peripherals. Verify startup sequencing, rail tolerances, and any load-dump or transient requirements applicable to the final automotive installation.
Place the transceiver, LIN bus connection, and required protection or passive components according to the Infineon TLE8457A/TLE8457B application schematic. Keep sensitive communication routing compact and maintain the specified bus return path to the chassis or reference network. Confirm connector, cable, and load-capacitance limits because excessive bus capacitance can impair LIN communication timing.
Do not treat another LIN transceiver with the same pin count as a drop-in replacement. Verify terminal assignments, logic levels, driver timing, receiver thresholds, supply ranges, auxiliary-output capability, protection, and thermal limits against the manufacturer datasheet. The TLE8457ALEXUMA2 is a 1/1 device, so a design requiring more than one LIN channel also needs additional transceivers.
The PG-TSON-8-1 package is intended for surface-mount assembly, but its copper connection and local airflow still affect performance in an automotive enclosure. Evaluate power loss in the transceiver and any auxiliary regulator path at the highest expected ambient temperature, which may approach the device’s 150 °C upper limit. Use the manufacturer’s thermal information when selecting copper area and considering the heat generated by surrounding components.
Compliance Information
The manufacturer datasheet identifies LIN specification 2.2A and SAE J2602 compliance. Specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations are not stated in the available product information.
