TLIN1027DRBRQ1 - Automotive LIN Transceiver 20kbps | TI
MPN: TLIN1027DRBRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.72 | $0.72 |
| 10 | $0.65 | $6.50 |
| 100 | $0.58 | $58.00 |
| 500 | $0.5416 | $270.80 |
| 1,000 | $0.49 | $490.00 |
TLIN1027DRBRQ1 Overview
A LIN transceiver is the physical-layer interface IC that translates the logic-level signals of a microcontroller UART into the differential-dominant signaling of a single-wire LIN bus. Within the vehicle networking hierarchy, LIN sits below CAN and CAN FD as a low-cost, low-speed sub-bus for mechatronic nodes such as seat controllers, mirrors, pumps and sensors. The transceiver itself is a member of the broader family of bus interface and network transceiver ICs in power-management and interface semiconductor taxonomies.
Key features include compatibility with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A and ISO/DIS 17987-4.2 standards, integrated wake-up via the LIN bus or the EN pin, a low-power sleep mode, and on-chip protection. The TLIN1027-Q1 variant is specified without a dominant state timeout, and the device is designed to support 12-V automotive applications with wider operating margins.
Technically, the TLIN1027-Q1 integrates an internal wake-up receiver and protection structures that reduce external component count. Thermal shutdown protection guards the output driver against fault conditions on the bus, and the 8-VDFN exposed-pad package provides a low-inductance ground path important for automotive EMC performance.
Typical applications include in-vehicle networking nodes such as body-control modules, door modules, seat adjusters, HVAC actuators and 12-V sensor clusters, where the 20 kbps LIN data rate and single-wire wiring harness savings fit the cost structure of these subsystems.
Design consideration: because LIN drivers drive a resistive bus terminated through a 1 kOhm dominant-dominant divider, verify supply headroom and thermal shutdown thresholds against worst-case bus shorts in your fault analysis.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TLIN1027DRBRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLIN1027DRBRQ1 (same form factor and footprint) β differing in Automotive Qualification, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLIN10283DRBRQ1
β Drop-Inβ In Stock
$1.1 / Unit
View Datasheet βTLIN1027DRBTQ1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLIN1021ADRBRQ1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLIN1027DRBRQ1 Specifications
| Function | LIN physical layer transceiver |
| Protocol Compatibility | LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, ISO/DIS 17987-4.2 |
| Data Rate | Up to 20 kbps |
| Bus Type | Single-wire bidirectional LIN bus |
| Supply System | 12-V applications with wider operating margin |
| Dominant State Timeout | Not implemented (without dominant state timeout) |
| Wake-Up Sources | LIN bus or EN pin |
| Sleep Mode | Low-power sleep mode |
| Protection | Thermal shutdown protection |
| Automotive Qualification | AEC-Q100 (Q1) |
| Operating Temperature Range | -40C to +125C |
| Package | 8-SON / VDFN exposed pad (DRB), 3x3 mm |
| Channels / Direction | 1/1 transceiver |
| Mounting Type | Surface Mount |
TLIN1027DRBRQ1 8-son / vdfn exposed pad (drb), 3x3 mm Pin Configuration Guide
Pin configuration for TLIN1027DRBRQ1 (8-son / vdfn exposed pad (drb), 3x3 mm 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 TLIN1027DRBRQ1.
Refer to the datasheet for full pin configuration.
Typical Applications
TLIN1027DRBRQ1 is suitable for 6 applications: Body Control Modules (BCM), Door and Seat Control Modules, HVAC and Climate Control Nodes, Automotive Sensor and Switch Clusters, Lighting Modules, Industrial LIN Sub-Networks.
Body Control Modules (BCM)
The TLIN1027DRBRQ1 fits body control modules because it is an AEC-Q100 qualified LIN transceiver rated from -40C to +125C and designed for 12-V automotive systems with wider operating margins. In a BCM, the MCU's UART connects through the transceiver's TXD/RXD pins to the single-wire LIN bus at up to 20 kbps, and the integrated wake receiver allows the module to sleep at low current until bus activity wakes it via the bus or the EN pin. Thermal shutdown protects the driver if the bus line is shorted to battery, an important fault condition in body harnesses.
Recommended
Door and Seat Control Modules
Door modules, mirror adjusters and seat controllers commonly use LIN for the low-speed link between a gateway and distributed actuators, and the TLIN1027DRBRQ1 aligns well: single-wire bus wiring saves harness cost versus CAN, the 20 kbps data rate is sufficient for switch and motor command traffic, and the low-power sleep mode plus bus wake-up lets dormant modules stay off the battery budget when the vehicle is parked. The 8-SON (DRB) 3x3 mm exposed-pad package suits the compact PCBs typical of in-door and in-seat electronics, where the exposed pad also improves EMC and thermal behavior.
Recommended
HVAC and Climate Control Nodes
HVAC flap actuators, blower controllers and temperature sensors are classic LIN sub-network nodes, and the TLIN1027DRBRQ1 addresses their needs directly. Its compliance with LIN 2.0 through 2.2A and ISO/DIS 17987-4.2 ensures interoperability with mixed-fleet climate modules, while the 12-V rated interface with wider margin tolerates load-dump-affected cabin supply rails. Because this variant has no dominant state timeout, the climate MCU firmware should implement timeout supervision or the TLIN10283DRBRQ1 should be chosen instead. The integrated thermal shutdown adds a hardware safety net if the LIN line is crushed against chassis ground in the dash harness.
Recommended
Automotive Sensor and Switch Clusters
Distributed sensor and switch clusters - fluid-level sensors, rain/light sensors, steering-wheel switch pods - use LIN to report status to a domain controller, and the TLIN1027DRBRQ1 is well matched: its low-power sleep mode keeps quiescent drain negligible in always-connected 12-V vehicles, bus wake-up means the node only powers its analog front end after a wake frame, and AEC-Q100 qualification covers the -40C to +125C environments these clusters see near windshields and engine bays. At 20 kbps, periodic sensor frames fit comfortably within the LIN schedule table of a typical cluster network.
Recommended
Lighting Modules
Interior and exterior LED lighting modules increasingly receive dimming commands over LIN, and the TLIN1027DRBRQ1 provides the physical layer for that link. Its 20 kbps data rate handles lamp-select, brightness and diagnostic frames in a LIN schedule, and the wider-margin 12-V design tolerates the supply variation typical of lighting harness points. Because the transceiver integrates wake-up and thermal shutdown, the lighting ECU can comply with battery-drain requirements while remaining protected against bus faults. Designers should verify wake-up filter timing against lamp-on latency requirements, since the integrated wake receiver adds a small wake latency from sleep mode.
Recommended
Industrial LIN Sub-Networks
Although automotive-qualified, the TLIN1027DRBRQ1 is equally usable in industrial 12-V distributed I/O such as agricultural equipment, material-handling vehicles and gate/door controllers, where LIN's single-wire topology reduces cabling versus CAN. The -40C to +125C operating range exceeds most industrial requirements, providing design margin, and the AEC-Q100 pedigree signals robust ESD and reliability behavior in harsh environments. The absence of a dominant state timeout in this variant means industrial firmware should supervise bus dominant states, or designers can drop in the pin-compatible TLIN10283DRBRQ1 where hardware timeout supervision is preferred.
Recommended
Recommended Products Summary
Engineering reference data for TLIN1027DRBRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLIN10283DRBRQ1 | TLIN1027DRBTQ1 | TLIN1021ADRBRQ1 |
|---|---|---|---|---|
| Package | 8-SON (DRB) 3x3 mm | 8-SON (DRB) 3x3 mm - same | 8-SON (DRB) 3x3 mm - same | 8-SON (DRB) 3x3 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Protocol Compliance | LIN 2.0/2.1/2.2/2.2A, ISO/DIS 17987-4.2 | LIN 2.x / ISO 17987-4 family | LIN 2.0/2.1/2.2/2.2A, ISO/DIS 17987-4.2 | LIN 2.x family |
| Max Data Rate | 20 kbps | 20 kbps | 20 kbps | 20 kbps |
| Automotive Qualification | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) | AEC-Q100 (Q1) |
Key Differentiators
- No dominant state timeout for firmware-controlled fault handling (vs TLIN10283DRBRQ1)
- Compact thermally-enhanced DRB package (vs NXP TJA1021 (SO8))
- Integrated wake receiver with dual wake sources (vs TLIN1021ADRBRQ1)
Design Notes
The TLIN1027-Q1 does not implement a dominant state timeout. If the LIN bus is held dominant by a shorted node or firmware lockup, this transceiver will remain in the dominant state until the MCU intervenes. Either implement dominant-state supervision in firmware with a recovery path (commanding sleep via EN), or select the pin-compatible TLIN10283DRBRQ1 which integrates the hardware timeout. Verify this decision during your FMEA, since stuck-dominant behavior can flatten the vehicle battery in parked conditions.
Use the exposed pad of the 8-SON (DRB) 3x3 mm package as the primary ground connection and solder it to a solid ground pour with an array of thermal vias. The exposed pad provides the low-inductance ground reference that the LIN driver needs for EMC performance, and skip-and-thinned layouts on the pad degrade both emissions and thermal performance. Place the series bus resistor and termination network close to the LIN pin, and keep the VSUP decoupling capacitor within a few millimeters of the supply pin.
Estimate: LIN driver current is dominated by the bus termination - with a typical ~660 Ohm effective pull-up network and the battery rail near 13.5 V, worst-case driver current is on the order of tens of milliamperes, but a bus short to 12 V through the protection structure can push the die toward thermal shutdown. Include the battery-voltage tolerance and load-dump clamping strategy of your module in the thermal budget, and confirm worst-case dissipation against the DRB package theta-JA with your board stackup from the TI datasheet thermal tables.
Compliance Information
AEC-Q100 automotive qualification confirmed by Q1 suffix and distributor descriptions. RoHS/REACH/lead-free status not stated in the provided data - verify on the TI product page. Compliant with LIN 2.0, 2.1, 2.2, 2.2A and ISO/DIS 17987-4.2 protocol standards.
