TLE7258LEXUMA1 - 20 kbps LIN Bus Transceiver | Infineon
MPN: TLE7258LEXUMA1 ✓ ActiveTLE7258LEXUMA1 Overview
A LIN transceiver is a physical-layer interface device that connects a microcontroller to a LIN (Local Interconnect Network) sub-network. LIN is a low-cost, single-wire, master-slave serial bus standardized for vehicle body electronics, where a full CAN network would be overkill. The hierarchy runs from LIN transceiver to automotive interface IC to interface IC to integrated circuit, and it sits at the boundary between the host MCU and the physical bus wiring.
Key features include a 20 kbps LIN data rate, ISO 17987-4 compliance, a single transceiver channel (1/1) for point-to-point LIN nodes, low 3 mA supply current for sleep-friendly body modules, and MSL 2A moisture sensitivity handling for standard reflow assembly. The BiCMOS process combines bipolar output drivers with CMOS control logic, which is what allows the transceiver to deliver usable bus levels while drawing very little standby current.
Architecturally, the device bridges a logic-level host interface to the single-wire LIN bus. It translates host-side command logic into the dominant/suppressed bus states and returns received bus levels as digital logic, with internal filtering and protection around the bus pin. Because only one transceiver channel is fitted, a node needing bidirectional LIN with separate transmit and receive paths should look at dual-channel members of the family.
Typical applications include LIN slave nodes in body control modules, door and seat control units, ambient temperature and presence sensor nodes, climate control panel sub-nets, LIN-to-CAN gateway interfaces, and low-speed accessory modules where a robust, low-power single-wire link is preferred over CAN or RS-485.
When designing with this transceiver, budget decoupling close to the supply pin and observe the LIN bus rise-time and slope requirements defined by ISO 17987-4; a node that must remain permanently listening for bus wake-up should be validated against the family's sleep and wake current figures before the PCB is frozen.
This page brings together package and supply details, drop-in ordering variants within the same Infineon family, and practical interface design notes that are not reproduced from the manufacturer datasheet alone.
Drop-in alternatives for TLE7258LEXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
TLE7258LE
✅ Drop-In📋 Reference alternative (not in catalog)
TLE7258X
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLE7258-1
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLE7258-3
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLE7258G
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLE7258LEXUMA1 Specifications
| Product Type | LIN bus transceiver (1/1 half duplex) |
| Data Rate | 20 kbps |
| Supply Voltage Range | 5.5 V to 18 V |
| Supply Current (Isup) | 3 mA |
| Process Technology | BiCMOS |
| Moisture Sensitivity Level (MSL) | 2A |
| Package | PG-TSON-8-1 (8-pin, surface mount) |
| Number of Pins | 8 |
| Number of Transceiver Channels | 1 |
| Standard Compliance | ISO 17987-4 |
| Bus Type | LIN (Local Interconnect Network), single-wire master-slave |
| Mounting Type | Surface Mount |
| Automotive Application | Vehicle body electronics and low-speed sub-networks |
TLE7258LEXUMA1 pg-tson-8-1 (8-pin, surface mount) Pin Configuration Guide
Pin configuration for TLE7258LEXUMA1 (pg-tson-8-1 (8-pin, surface mount) 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 TLE7258LEXUMA1.
Refer to the datasheet for full pin configuration.
Typical Applications
TLE7258LEXUMA1 is suitable for 6 applications: Automotive Body Control Module LIN Nodes, Automotive Sensor and Actuator Nodes, LIN-to-CAN Gateway Interface, Climate Control Panel Sub-Network, Door and Seat Control Modules, Industrial and Utility LIN Equipment.
Automotive Body Control Module LIN Nodes
The TLE7258LEXUMA1 suits body control modules that expose a LIN sub-network to door, window or lighting actuators. Its 20 kbps LIN rate matches the standard node speed defined for ISO 17987-4 compliant single-wire links, and the 3 mA supply current keeps module standby consumption low during long parked periods. The device is placed between the module microcontroller and the LIN bus line, translating host logic levels into dominant and suppressed bus states and returning received levels as clean digital logic. The 8-pin PG-TSON-8-1 surface-mount footprint keeps board area small inside densely packaged body modules, while the 5.5 V to 18 V supply range covers the body-battery rail including transient headroom.
Recommended
Automotive Sensor and Actuator Nodes
Ambient temperature, seat occupancy and air-quality sensing nodes in a vehicle typically run from a LIN sub-network, and the TLE7258LEXUMA1 provides the physical-layer interface for them. Because these sensors are small, cost-driven boards, the low 3 mA supply current of the transceiver is a meaningful part of the total node budget. The single-channel 1/1 architecture matches one LIN line per node, and the PG-TSON-8-1 land pattern supports automated assembly on high-volume sensor production lines. The BiCMOS implementation supports the mixture of low-power CMOS control logic with a robust bipolar bus driver capable of driving the capacitive LIN bus load and meeting the rise-time behaviour expected by ISO 17987-4 compliant nodes.
Recommended
LIN-to-CAN Gateway Interface
A gateway that bridges a LIN sub-network onto the vehicle CAN backbone needs a reliable LIN physical layer on one side. The TLE7258LEXUMA1 provides that LIN endpoint at 20 kbps with an 8-pin PG-TSON-8-1 footprint that leaves board space for a CAN transceiver in the same enclosure. The 5.5 V to 18 V supply range lets the LIN side run directly from the body-battery rail through the same protection network as the CAN side, while the 3 mA supply current keeps gateway standby draw low. Because the transceiver is ISO 17987-4 compliant, its bus signalling, slope and timing behave predictably when mixed with other OEM-qualified nodes on the same LIN segment, reducing integration risk in mixed-vintage vehicle fleets.
Recommended
Climate Control Panel Sub-Network
HVAC control panels in vehicles frequently distribute rotary encoders, button feedback and small display segments across a LIN sub-network. The TLE7258LEXUMA1 works well as the panel-side transceiver because the 20 kbps rate is more than sufficient for button and encoder traffic and the device draws only 3 mA of supply current, so quiescent load from the interface electronics stays negligible. The compact PG-TSON-8-1 package fits inside the thin bezel space typical of modern climate control units, and BiCMOS technology gives a good mix of low-power logic and a bus driver able to source the current needed for the LIN bus load. The 5.5 V to 18 V supply window aligns with the body rail even during cranking-related excursions.
Recommended
Door and Seat Control Modules
Door modules and seat controllers are classic LIN nodes: they carry mirror folding, window indexing and occupant-position sensing over a single wire to save harness weight. The TLE7258LEXUMA1 serves as the bus interface in these modules, with a 20 kbps LIN rate that matches actuator indexing data volumes and a 3 mA supply current that keeps the module's sleep current within the OEM budget while the vehicle is parked. The PG-TSON-8-1 footprint is small enough for the constrained PCB area inside a door mirror housing, and the surface-mount form supports the fully automated assembly used at automotive volume. The BiCMOS process gives the bus output stage the drive capability required by the capacitive LIN bus while keeping digital logic consumption low.
Recommended
Industrial and Utility LIN Equipment
Outside the passenger vehicle, single-wire LIN-style links appear in utility metering, agricultural machinery and building control where wiring cost dominates. The TLE7258LEXUMA1 can be used in these designs because its 20 kbps LIN rate, 5.5 V to 18 V supply window and 3 mA supply current suit low-cost remote nodes fed from 12 V or 24 V-derived rails. The 8-pin PG-TSON-8-1 surface-mount package is easy to assemble on long-life industrial boards and is rated MSL 2A for standard reflow handling. Because the device implements the LIN physical layer in BiCMOS, it can be paired with the same MCU families used in automotive designs, letting engineers reuse firmware and validation effort across automotive and industrial LIN products.
Recommended
Recommended Products Summary
Engineering reference data for TLE7258LEXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE7258LE | TLE7258X | TLE7258-1 | TLE7258-3 | TLE7258G |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TSON-8-1 (8-pin surface mount) | PG-TSON-8-1 (8-pin surface mount) - same | PG-TSON-8-1 (8-pin surface mount) - same | PG-TSON-8-1 (8-pin surface mount) - same | PG-TSON-8-1 (8-pin surface mount) - same | PG-TSON-8-1 (8-pin surface mount) - same |
| LIN Data Rate | 20 kbps | 20 kbps | 20 kbps | 20 kbps | 20 kbps | 20 kbps |
| Supply Voltage Range | 5.5 V to 18 V | 5.5 V to 18 V | 5.5 V to 18 V | 5.5 V to 18 V | 5.5 V to 18 V | 5.5 V to 18 V |
| Supply Current (Isup) | 3 mA | 3 mA | 3 mA | 3 mA | 3 mA | 3 mA |
| Process Technology | BiCMOS | BiCMOS | BiCMOS | BiCMOS | BiCMOS | BiCMOS |
| Standard Compliance | ISO 17987-4 | ISO 17987-4 | ISO 17987-4 | ISO 17987-4 | ISO 17987-4 | ISO 17987-4 |
| Number of Transceiver Channels | 1 (1/1 half transceiver) | 1 (1/1 half transceiver) | 1 (1/1 half transceiver) | 1 (1/1 half transceiver) | 1 (1/1 half transceiver) | 1 (1/1 half transceiver) |
Key Differentiators
- Single-channel LIN interface sized for cost-driven body nodes (vs TLE7258-1)
- Low supply current suits sleep-dominated body modules (vs TLE7258G)
- ISO 17987-4 compliance for mixed-OEM LIN segments (vs TLE7258LE)
- BiCMOS process combines low-power logic with capable bus drive (vs TLE7258-3)
Design Notes
Place the 100 nF supply decoupling capacitor directly between the supply pin and the ground pin of the PG-TSON-8-1 footprint, with the shortest possible trace loop. The LIN bus line is a single-wire node with capacitive loading and is sensitive to coupling from adjacent switching traces, so route the bus line away from supply and clock paths, keep it short and unswitched, and place any required protection or filter components close to the bus pin. Keep the ground return of the transceiver continuous to the connector reference ground so bus currents do not inject into the logic ground of the host microcontroller.
Estimated: with the stated 3 mA supply current at an 18 V upper supply condition, the transceiver's own supply dissipation is roughly 3 mA x 18 V = 54 mW, which is small compared with the host system budget; the dominant loss in a LIN node is therefore elsewhere, typically the bus pull-up and the module's standby load. Because LIN relies on measured rise times and thresholds, confirm the host microcontroller's bit timing at 20 kbps and verify the bus waveform with a scope at the connector before sign-off rather than relying on nominal timing values.
Do not substitute a SOIC-style member of the TLE7258 family onto a PG-TSON-8-1 footprint, and do not treat a different-manufacturer LIN transceiver as a drop-in without comparing pin assignments and bus pin handling in the manufacturer pin tables. Also avoid placing a large reservoir capacitor directly on the LIN bus line, since excessive bus capacitance slows the edge rate and can cause communication errors at 20 kbps. Finally, handle the MSL 2A package correctly: keep reels in dry storage and complete reflow within the permitted floor life.
The 5.5 V to 18 V supply window covers body-battery rails, but the transceiver does not regulate the bus line voltage itself. Provide the protection network upstream: reverse-battery and load-dump protection, plus filtering that keeps transient energy off the supply pin. Where the host module runs deep sleep for long periods, check that the transceiver's sleep and wake-up behaviour fits the LIN wake-up strategy of the segment, because a node that cannot rejoin a sleeping master is a common field failure in body modules.
Compliance Information
The device is an automotive LIN transceiver from Infineon with MSL 2A moisture sensitivity stated for the package. RoHS, REACH, AEC-Q100 grade and halogen-free status were not confirmed in the technical information consulted for this part; request the manufacturer material declaration for the exact ordering code.
