TLIN2024A-Q1 - Quad LIN Transceiver w/ Wake-Up | TI
MPN： TLIN2024A-Q1 ✓ 啟用中TLIN2024A-Q1 概覽
A LIN (Local Interconnect Network) transceiver is a single-wire bidirectional bus driver/protector typically used for low-speed in-vehicle networks at data rates up to 20 kbps standard, sitting beneath higher-layer protocols such as CAN and Automotive Ethernet. Within the vehicle E/E architecture hierarchy, LIN complements CAN by serving cost-sensitive sub-networks of body electronics, sensors, and mechatronic actuators where bandwidth and deterministic latency requirements are modest but robustness against automotive transients is non-negotiable.
Key features of the TLIN2024A-Q1 include two independent dual LIN transceiver blocks controlled by separate VSUP1 and VSUP2 rails, support for 12-V and 24-V applications, an extended operating voltage range with ±58-V LIN bus fault protection and load-dump tolerance, integrated wake-up pattern recognition on all four channels, and a receiver that supports data rates up to 100 kbps for faster in-line programming.
The device uses internal LIN slave termination resistors selectable via the SLIN_EN pin, has an open-drain RXD output structure compatible with both 3.3-V and 5-V microcontroller I/O domains, and integrates thermal shutdown, under-voltage detection on VSUP, and dominant-state timeout to prevent a single stuck node from blocking the bus. Its wide input supply range and bus-fault tolerance make it suitable for the harsh electrical environment of 12-V and 24-V automotive platforms.
Typical applications include body control modules, HVAC control panels, steering-wheel switch matrices, seat and door module LIN clusters, rear-view mirror controls, and lighting LIN nodes. The dual-rail architecture also enables systems where some LIN channels are always-on for wake-up while others are locally switched for quiescent-current reduction. Compared with discrete LIN implementations, the TLIN2024A-Q1 reduces BOM by integrating four physical-layer channels in a single small package.
When designing with this device, place a 100 nF decoupling capacitor as close as possible to each VSUP pin, ensure adequate PCB trace width for 12-V battery feeds, and respect the LIN pin external diode and resistor guidance for commander nodes. The dominant-state timeout feature prevents bus lock-up but should be confirmed against system-level wake-up timing requirements during validation.
直接替換替代品，適用於 TLIN2024A-Q1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLIN2024A-Q1 （相同外形與佔位） — 差異在於 Number of Channels, Package.
TLIN2024ARGYRQ1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLIN2024-Q1
✅ 直接替換📋 參考替代品（不在目錄中）
TLIN2024-Q1
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1028T/5V0/20
✅ 直接替換📋 參考替代品（不在目錄中）
NCV7428D10R2G
✅ 直接替換📋 參考替代品（不在目錄中）
TLIN2024A-Q1 規格
| Product Type | LIN Physical Layer Transceiver |
| Number of Channels | 4 (two independent dual blocks) |
| Supply Voltage (VSUP1/2) | 4.5 V to 36 V |
| LIN Bus Fault Protection | ±58 V (load-dump tolerant) |
| LIN Data Rate | Up to 100 kbps (in-line programming) |
| Standard LIN Data Rate | Up to 20 kbps (LIN 2.x) |
| 工作溫度範圍 | -40 C to +125 C |
| AEC-Q100 Grade | Grade 1 |
| LIN Standards | LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A |
| ISO Compliance | ISO/DIS 17987-4 (EPL) |
| SAE Compliance | SAE J2602-1 |
| Wake-Up Feature | Yes (pattern recognition on LIN bus) |
| Dominant State Timeout | Yes |
| Slave Termination Resistor | Selectable via SLIN_EN pin |
| RXD Output | Open-drain, 3.3 V and 5 V logic compatible |
| 封裝 | VQFN-20 (RGY) 4.5 mm x 3.5 mm |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
TLIN2024A-Q1 腳位配置
| 腳位 1 | TXD1 — Transmit data input for LIN channel 1 |
| 腳位 2 | RXD1 — Receive data output (open-drain) for LIN channel 1 |
| 腳位 3 | LIN1 — LIN bus line 1 (bidirectional) |
| 腳位 4 | SLIN_EN — Selectable slave termination resistor enable |
| 腳位 5 | WAKE1 — Wake-up input for channel 1 |
| 腳位 6 | VSUP1 — Supply voltage input for dual block 1 (4.5 V to 36 V) |
| 腳位 7 | GND1 — Ground for dual block 1 |
| 腳位 8 | EN1 — Enable input for block 1 |
| 腳位 9 | TXD2 — Transmit data input for LIN channel 2 |
| 腳位 10 | RXD2 — Receive data output for LIN channel 2 |
| 腳位 11 | LIN2 — LIN bus line 2 |
| 腳位 12 | nINT — Interrupt output (open-drain) for wake-up and fault events |
| 腳位 13 | LIN3 — LIN bus line 3 |
| 腳位 14 | LIN4 — LIN bus line 4 |
| 腳位 15 | RXD3/4 — Receive data output for channels 3 and 4 |
| 腳位 16 | TXD3/4 — Transmit data input for channels 3 and 4 |
| 腳位 17 | EN2 — Enable input for block 2 |
| 腳位 18 | VSUP2 — Supply voltage input for dual block 2 |
| 腳位 19 | GND2 — Ground for dual block 2 |
| 腳位 20 | EP — Exposed thermal pad (connect to GND) |
典型應用
TLIN2024A-Q1 適用於 6 應用s: Automotive Body Control Module (BCM), HVAC Control Panel with LIN Sub-Network, Steering Wheel Switch Matrix and Column Module, Door Module and Seat Adjustment Cluster, Rear-View Mirror Control Unit, Automotive Lighting LIN Node Array.
Automotive Body Control Module (BCM)
The TLIN2024A-Q1 fits BCMs because it provides four LIN channels in a single 20-pin VQFN package, allowing one IC to drive mirror, lighting, wiper, and switch-matrix LIN sub-buses from a central node. Its ±58 V bus-fault tolerance and load-dump protection exceed 12-V automotive transient requirements per ISO 7637, eliminating the need for external TVS diodes on each LIN pin. The dual VSUP1/VSUP2 architecture allows one section to remain in low-power wake-up mode while the other is locally switched, supporting quiescent-current budgets below 100 uA in parked vehicles. AEC-Q100 Grade 1 qualification and -40 C to +125 C operation guarantee behavior across the full automotive temperature range.
推薦
HVAC Control Panel with LIN Sub-Network
HVAC front panels typically talk to flap motors and blower controllers over LIN, and the TLIN2024A-Q1 supports all of these nodes from a single transceiver. The 100 kbps LIN data rate enables faster touch-panel response and in-line reflashing of actuator firmware without CAN bottlenecks. Integrated wake-up pattern detection lets the panel wake the HVAC system from sleep when the driver presses a button on a remote LIN node, simplifying power management. Dominant-state timeout prevents a failed motor node from locking the bus, an important safety feature for HVAC regulation. Open-drain RXD outputs interface directly with 3.3-V panel MCUs without level shifters.
推薦
Steering Wheel Switch Matrix and Column Module
Steering column modules use LIN to report button presses (volume, cruise, phone) to the head unit while keeping the wiring harness simple and low-cost. The TLIN2024A-Q1's integrated four channels allow one device to handle both switch matrix and clock spring LIN connections plus a redundant channel for safety. Selectable slave termination via SLIN_EN lets the designer match the dominant-mode behavior to system-level LIN commander/listener roles. The AEC-Q100 Grade 1 qualification and 12-V/24-V compatibility ensure operation across gasoline and commercial-vehicle platforms. The wide -40 C to +125 C operating range tolerates the heat soak inside a steering column under sun load.
推薦
Door Module and Seat Adjustment Cluster
Each automotive door module typically aggregates window, mirror, and lock controls via LIN, and using the TLIN2024A-Q1 reduces PCB area and BOM by replacing up to four discrete transceivers. Load-dump and jump-start transient protection to ±58 V is critical at door modules where long wiring harness inductance is exposed to battery transients. Wake-up from LIN bus pattern allows the door module to power up only when the vehicle is unlocked, supporting keyless-entry power budgets. Dominant-state timeout protects against locked-up window or mirror nodes during fault conditions, an important safety feature.
推薦
Rear-View Mirror Control Unit
Auto-dimming and power-fold rear-view mirrors are classic LIN sub-networks because they need only low-bandwidth commands. The TLIN2024A-Q1 supports up to four mirror-related LIN nodes (left, right, interior auto-dim, plus telemetry) from one IC, simplifying harness. The 4.5 V to 36 V VSUP range tolerates cranking dips and load-dump events common in mirror wiring. The integrated wake-up lets the mirror respond to radio-unlock commands without the BCM needing a wake-up line. Open-drain RXD simplifies connection to low-power mirror MCUs.
推薦
Automotive Lighting LIN Node Array
Exterior lighting modules such as adaptive headlamps, tail-light clusters, and ambient lighting increasingly use LIN for matrix-LED and RGB control. The TLIN2024A-Q1 channels can drive four lighting sub-modules (for example headlight, taillight, side marker, interior ambient) from a single body controller. ±58 V bus-fault tolerance is essential because lighting harnesses route near alternator and ignition sources. The 100 kbps data rate supports faster-than-LIN-standard channels for LED matrix reconfiguration during animations. AEC-Q100 Grade 1 and -40 C to +125 C operation cover underhood and headlamp thermal stress.
推薦
推薦產品摘要
工程參考資料，適用於 TLIN2024A-Q1 — 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 | TLIN2024ARGYRQ1 | TLIN2024-Q1 | TJA1028T/5V0/20 | NCV7428D10R2G |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | onsemi |
| Package | VQFN-20 (RGY) | VQFN-20 (RGY) - same | VQFN-20 (RGY) - same | SOIC-8 / HVSON-8 - different (1-channel device) | SOIC-14 - different (1-channel SBC) |
| Number of LIN Channels | 4 | 4 | 4 | 2 | 1 |
| VSUP Range | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 5 V to 27 V | 5 V to 27 V |
| LIN Bus Fault Protection | +/-58 V | +/-58 V | +/-58 V | +/-40 V | +/-42 V |
| LIN Data Rate (Max) | 100 kbps | 100 kbps | 100 kbps | 20 kbps | 20 kbps |
| AEC-Q100 Grade | Grade 1 | Grade 1 | Grade 1 | Grade 0 / Grade 1 | Grade 1 |
| Integrated LDO | No (external VCC required) | No | No | Yes (5V integrated) | Yes (5V integrated) |
主要差異化特點
- Four LIN channels in a single 20-pin VQFN package (對比TJA1028T/5V0/20)
- ±58 V LIN bus fault protection extends beyond competing ±40 V (對比TJA1028T/5V0/20)
- Up to 100 kbps data rate for faster in-line programming (對比NCV7428D10R2G)
設計說明
Decouple each VSUP1 and VSUP2 pin with a 100 nF ceramic capacitor placed as close as physically possible to the IC, per the TLIN2024A-Q1 datasheet. A bulk capacitor of at least 10 uF on each VSUP rail is recommended to ride through cold-crank and load-dump events on 12-V automotive supplies. Add a reverse-battery protection diode or P-FET on the supply path to prevent IC damage during jump-start miswiring across 24-V commercial platforms.
Keep LIN bus traces short and away from switching noise sources such as DC-DC converters and motor drivers; LIN is a single-wire bus susceptible to EMI cross-coupling. Place the LIN series protection diode and pull-up resistor close to the LIN pin, following the commander-node guidance in the datasheet for one diode/resistor per channel. Provide a solid ground plane under the device and stitch the EP (exposed pad, pin 20) directly to ground with multiple thermal vias for heat spreading.
Avoid assuming the TLIN2024A-Q1 is a drop-in for the older TLIN1027 or TLIN1024 single-channel LIN transceivers; the channel count, pinout, and package differ - verify against the datasheet pin map before re-using PCB layouts. Do not apply VIN above 36 V on VSUP1/VSUP2 without external protection; although the LIN bus tolerates ±58 V, the VSUP input has its own rating. Always enable the slave termination via SLIN_EN only when the node is configured as a listener, never as a commander, to avoid bus contention.
LIN spec mandates a 30 kbps maximum standard data rate with 1-3% timing tolerance; running at the TLIN2024A-Q1's 100 kbps in-line-programming mode requires the bus master to verify all slave devices support the higher rate. The RXD output is open-drain and requires a pull-up resistor to the MCU's logic supply rail (typically 3.3 V or 5 V); choose a pull-up between 4.7 kohm and 10 kohm for low-power versus fast-rise-time trade-off. Dominant-state timeout will release the bus automatically if TXD is held low for an extended period, preventing hung nodes from blocking all LIN traffic.
合規資訊
AEC-Q100 Grade 1 qualified per TI datasheet. LIN 2.0/2.1/2.2/2.2A, ISO/DIS 17987-4 EPL, and SAE J2602-1 compliant per the TI datasheet Features list. RoHS and REACH compliance confirmed from TI product page; halogen-free status not explicitly stated in the verified web data.
