TLE8457BSJXUMA1 - 20 kBd LIN Transceiver | Infineon
MPN： TLE8457BSJXUMA1 ✓ 啟用中TLE8457BSJXUMA1 概覽
A LIN transceiver is a physical-layer interface that connects a low-speed serial network controller to a LIN bus. LIN, also called Local Interconnect Network, is used for distributed automotive and industrial control systems. The interface belongs to the transceiver and interface IC hierarchy, where it converts logic-level transmit and receive signals into bus-compatible levels while helping protect the controller from electrical stress.
The TLE8457BSJ family combines bus communication with a 3.3 V supply function for a microcontroller and its peripherals. Its integrated regulator can supply up to 70 mA, reducing the number of external power components required in a LIN node. The device supports operation up to 20 kBd, while its standby current is specified at 20 µA, helping conserve power during inactive operating states.
Infineon identifies the TLE8457BSJ as AEC-Q100 qualified for automotive use. This qualification makes the device relevant to vehicle body, comfort, lighting, seat, sensor, and control-module systems where communication reliability and environmental robustness are important design considerations. The integrated regulator and transceiver combine two functions in one compact surface-mount package.
Typical uses include LIN-controlled automotive door modules, climate-control units, seat controllers, ambient sensors, lighting modules, and small industrial LIN nodes. The 20 kBd operating rate suits low-bandwidth serial links, while the integrated 3.3 V rail can support a suitably designed controller and limited peripheral load without a separate discrete regulator.
Design the LIN bus network with the voltage thresholds, pull-up arrangement, bus capacitance, and grounding recommended in the manufacturer datasheet. Keep the transceiver and its supporting components close to the LIN connector, and review the regulator’s thermal and current budget before assigning additional peripheral current to the 3.3 V output.
This product page organizes the verified LIN, regulator, package, qualification, application, and sourcing information into an engineering-focused reference. It also identifies the closest documented same-brand family member and highlights the checks that matter before substituting a LIN transceiver on an existing PCB.
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TLE8457BSJ
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TLE8457BSJXUMA1 規格
| Product Type | LIN bus transceiver with integrated low-dropout regulator |
| Bus Type | LIN bus |
| Transceiver Configuration | 1/1 half-duplex transceiver |
| LIN Communication Rate | 20 kBd |
| Integrated Regulator Output Voltage | 3.3 V |
| Integrated Regulator Maximum Output Current | 70 mA |
| Standby Current | 20 µA |
| 封裝 | PG-DSO-8 / TSON-8 |
| 腳位數 | 8 pins |
| 安裝類型 | Surface mount |
| Automotive Qualification | AEC-Q100 qualified |
TLE8457BSJXUMA1 pg-dso-8 / tson-8 腳位配置指南
TLE8457BSJXUMA1（pg-dso-8 / tson-8 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TLE8457BSJXUMA1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLE8457BSJXUMA1 適用於 6 應用s: Automotive Door Control Module, Vehicle Climate-Control Unit, Automotive Sensor and Lighting Module, Seat and Comfort Controller, Industrial LIN Gateway, Low-Power Sensor Node.
Automotive Door Control Module
The TLE8457BSJXUMA1 fits a LIN-connected door module that needs a local 3.3 V rail and automotive bus communication in a compact board area. Its 20 kBd LIN interface supports commands for switches, locks, indicators, and window-related actuators, while the integrated regulator provides up to 70 mA to a suitable controller and small peripheral load. This combination can reduce external power circuitry and component count. The complete design should still account for actuator drivers, transient protection, grounding, and the regulator’s thermal budget. AEC-Q100 qualification makes the device appropriate for automotive qualification programs, subject to application-specific validation.
推薦
Vehicle Climate-Control Unit
A climate-control module can use the TLE8457BSJXUMA1 for communication with distributed LIN peripherals while powering its controller from the integrated 3.3 V regulator. The 20 kBd bus rate matches the low-bandwidth role of door, fan, flap, temperature, and panel nodes, and the 20 µA standby current supports low-power operating states. Because the regulator is limited to 70 mA, the design should separate high-current loads such as motors or heaters from the local rail. Review the manufacturer datasheet for supply limits, LIN timing, bus protection, and thermal conditions before production release.
推薦
Automotive Sensor and Lighting Module
The TLE8457BSJXUMA1 is suitable for compact modules that combine LIN command reception with low-power sensor or lighting electronics. A 20 kBd half-duplex interface provides adequate bandwidth for configuration, status, and diagnostic signaling, while the integrated 3.3 V output can support a controller and limited indicator or sensing load up to the specified 70 mA. This integration can simplify routing in small sealed housings, although the board still needs proper ground distribution and protection for external connectors. Confirm the exact operating-temperature variant, regulator thermal performance, and LIN electrical thresholds in the manufacturer documentation.
推薦
Seat and Comfort Controller
Seat adjustment, heating, ventilation, and position-sensing subsystems commonly use low-speed distributed networks for cost-effective wiring. The TLE8457BSJXUMA1 provides a 20 kBd LIN physical layer and a 3.3 V regulator output of up to 70 mA, allowing a compact controller to manage commands and return limited status information. Its standby current of 20 µA is useful when the vehicle expects long inactive periods, although system sleep behavior also depends on the host firmware and connected loads. Keep motor and heating drivers on appropriately protected rails rather than loading the integrated regulator beyond its specified capability.
推薦
Industrial LIN Gateway
The TLE8457BSJXUMA1 can serve as the LIN physical-layer component in a small industrial gateway or control terminal that bridges a LIN network to another communications interface. Its 20 kBd rate is appropriate for configuration data, sensor reports, and actuator commands rather than bulk transfers. The integrated 3.3 V regulator can simplify the low-voltage section when the host and attached peripherals stay within a combined 70 mA budget. Industrial installations should still verify EMC, temperature, grounding, and surge requirements, since automotive qualification does not automatically establish suitability for every industrial environment.
推薦
Low-Power Sensor Node
A compact LIN sensor node can use the TLE8457BSJXUMA1 when it must receive commands over a vehicle network while retaining a local 3.3 V supply. The 20 kBd communication rate is sufficient for periodic measurements, configuration commands, and diagnostic responses, and the specified 20 µA standby current helps reduce inactive-state consumption. The regulator output is suitable only for a host and limited peripherals within its 70 mA maximum, so the design should disable unnecessary loads before entering standby. Pin assignments, wake-up behavior, bus thresholds, and supply operating limits must be taken directly from the manufacturer datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 TLE8457BSJXUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLE8457BSJ |
|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies |
| Package | PG-DSO-8 / TSON-8 | PG-DSO-8 / TSON-8 |
| Transceiver Configuration | 1/1 half-duplex | 1/1 half-duplex |
| LIN Bus Rate | 20 kBd | 20 kBd |
| Integrated Regulator Output | 3.3 V | 3.3 V |
| Regulator Output Current | 70 mA | 70 mA |
| Standby Current | 20 µA | 20 µA |
| Automotive Qualification | AEC-Q100 qualified | AEC-Q100 qualified |
主要差異化特點
- Integrated local power supply (對比TLE8457BSJ)
- Automotive qualification (對比TLE8457BSJ)
- Low inactive-state consumption (對比TLE8457BSJ)
設計說明
Treat the integrated 3.3 V regulator as a 70 mA maximum rather than a general-purpose supply. Include the host controller, logic pull-ups, status indicators, and attached sensors in the worst-case budget, leaving margin for temperature and load variation. Do not connect motors, solenoid drivers, or high-current display backlights directly to this rail.
Place the transceiver, its required support components, and the connector-side protection network in a compact path that keeps the LIN routing short and away from sensitive analog or high-speed digital traces. Use a continuous ground reference beneath the device and route bus and return paths together. Follow the package drawing and manufacturer application diagram for exact pad and exposed-thermal-area connections.
Do not assume that every member of the TLE8457BSJ family is interchangeable without checking the complete ordering suffix. Verify package dimensions, pin functions, electrical limits, temperature range, and qualification for the exact installed MPN. A base family number alone does not specify every orderable configuration, and an apparently similar LIN transceiver may lack the integrated regulator or use different logic and bus terminals.
合規資訊
Infineon identifies the TLE8457BSJ family as AEC-Q100 qualified for automotive use. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not confirmed in the available product information.
