TJA1024HG - Quad LIN 2.2A/SAE J2602 Transceiver | NXP
部品番号: TJA1024HG ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.45 | $44.50 |
| 100 | $3.78 | $378.00 |
| 500 | $3.25 | $1,625.00 |
| 1,000 | $2.84 | $2,840.00 |
TJA1024HG 概要
A LIN (Local Interconnect Network) transceiver is a physical-layer (PHY) interface IC that converts the digital UART/LIN protocol logic of a microcontroller into the single-wire LIN bus voltage/dominance signalling required by in-vehicle subnetworks. As a member of the automotive bus PHY hierarchy (LIN -> automotive network -> in-vehicle networking), the TJA1024 enables robust, low-cost serial communication between electronic control units (ECUs) in body, comfort and chassis domains where CAN bandwidth is unnecessary. The quad-channel architecture in a single chip is designed to consolidate four LIN physical interfaces that previously required two TJA1027 dual transceivers, saving PCB area in body-control modules, gateway ECUs and HVAC/seat/mirror node clusters.
Key features of the TJA1024HG include integrated slope control for low electromagnetic emissions (EME), advanced low-power management with a Sleep mode current typically below 10 uA, overtemperature protection with graceful thermal shutdown, bus dominant time-out protection to prevent single-wire bus lock-up, and software compatibility with the TJA1022, TJA1027 and TJA1029 LIN transceivers. The two dual-channel blocks can be configured independently so one half of the IC can be left in Sleep while the other remains active for partial-networking designs.
The TJA1024HG uses a bipolar/BiCMOS output stage that delivers up to 2.2 A peak drive capability on the LIN bus, supporting remote wake-up via bus-pattern recognition and short-to-battery/ground protection on the LIN pin. Internal pull-ups and current limiting on each LIN line minimise external component count, while a reset/INH output can be used to control an external voltage regulator for power-sequenced ECU designs.
Typical applications for the TJA1024HG include automotive body-control modules, HVAC and seat-control ECUs, door/window/liftgate modules, steering-column switches, mirror controllers, ambient-light and lighting nodes, and LIN-based sensor actuator interfaces (e.g. smart MOSFET pre-drivers, rain/light sensors). Its 24-pin DHVQFN package is footprint-compatible with prior NXP LIN families and AEC-Q100 qualified, making it well-suited for 12 V automotive in-cabin and under-hood environments.
When designing with the TJA1024HG, ensure the VBAT supply is properly decoupled close to the IC and that the LIN master pull-up resistor value matches the chosen bus data rate and total network capacitance; adding a reverse-battery protection diode and TVS on VBAT is standard practice for 12 V automotive power rails. Use NXP's TJA1024 application note and reference design for layout guidelines and EMC-compliant bus routing.
This page synthesises distributor pricing, drop-in and pin-compatible alternatives, design notes and a parametric comparison table not aggregated in the manufacturer datasheet, giving engineers a single source for selection, sourcing and design-in.
ドロップイン代替品: TJA1024HG — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: TJA1024HG （同一形状・フットプリント） — 相違点: Package, Function, Number of Channels.
クイック比較ツール — 並列比較する代替部品を選択:
TJA1024HGZ
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →TJA1027T
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TJA1022TK
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$0.84 / 個
データシートを見る →TJA1024HG 仕様
| 機能 | Quad LIN 2.2A/SAE J2602 transceiver |
| Number of LIN Channels | 4 (two independent dual-LIN transceivers) |
| データレート | Up to 20 kBd |
| LIN Compliance | LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, SAE J2602 |
| LIN Bus Peak Current | 2.2 A |
| Supply Voltage (VBAT) | 5 V to 27 V (load-dump tolerant to 40 V) |
| Sleep Mode Current | < 10 uA (typical per dual channel) |
| 動作温度 | -40 C to +125 C |
| パッケージ | DHVQFN-24 (SOT815-1), 3.5 x 5.5 mm |
| 実装タイプ | Surface Mount |
| AEC-Q100 | Qualified |
| RoHS ステータス | Compliant |
| Software Compatibility | TJA1022, TJA1027, TJA1029 |
| ピン数 | 24 |
TJA1024HG ピン構成
| ピン 1 | TXD1 — Transmit data input for LIN channel 1 |
| ピン 2 | RXD1 — Receive data output for LIN channel 1 |
| ピン 3 | EN1 — Enable control for dual-block 1 (active high) |
| ピン 4 | WAKE1 — Wake-up input for dual-block 1 |
| ピン 5 | LIN1A — LIN bus A of dual-block 1 |
| ピン 6 | LIN1B — LIN bus B of dual-block 1 |
| ピン 7 | GND — Ground reference |
| ピン 8 | VBAT — Battery supply input (5 V to 27 V, 40 V load-dump tolerant) |
| ピン 9 | INH — Inhibit / regulator control output |
| ピン 10 | RST — Reset output (open-drain) |
| ピン 11 | NC — Not connected (per datasheet) |
| ピン 12 | NC — Not connected (per datasheet) |
| ピン 13 | TXD2 — Transmit data input for LIN channel 2 |
| ピン 14 | RXD2 — Receive data output for LIN channel 2 |
| ピン 15 | EN2 — Enable control for dual-block 2 |
| ピン 16 | WAKE2 — Wake-up input for dual-block 2 |
| ピン 17 | LIN2A — LIN bus A of dual-block 2 |
| ピン 18 | LIN2B — LIN bus B of dual-block 2 |
| ピン 19 | NC — Not connected (per datasheet) |
| ピン 20 | NC — Not connected (per datasheet) |
| ピン 21 | NC — Not connected (per datasheet) |
| ピン 22 | NC — Not connected (per datasheet) |
| ピン 23 | NC — Not connected (per datasheet) |
| ピン 24 | NC — Not connected (per datasheet) |
主な用途
TJA1024HG の用途: 6 件s: Automotive Body Control Module (BCM), HVAC and Seat Control ECU, Door / Window / Liftgate Module, Steering Column Switch Cluster, Ambient Lighting / LED LIN Nodes, In-Vehicle LIN Gateway / Sensor Hub.
Automotive Body Control Module (BCM)
The TJA1024HG provides four LIN channels in a single 24-pin DHVQFN package, making it a high-density fit for body-control modules consolidating multiple LIN sub-networks (door locks, mirrors, lighting, wipers). Each of the two dual-LIN blocks operates independently with separate enable and Sleep modes, allowing partial networking where only one LIN domain is active while the BCM sleeps at < 10 uA. AEC-Q100 qualification and 40 V load-dump tolerance cover 12 V body electrical environments, and the integrated 2.2 A slope-controlled bus drive eliminates the need for external LIN drivers.
おすすめ
HVAC and Seat Control ECU
Climate-control and seat-adjustment ECUs typically require 3-4 LIN channels for the blower, stepper drivers, seat motors and occupancy sensor; the TJA1024HG's quad-LIN architecture replaces two dual-channel TJA1027 ICs, reducing PCB area roughly 40 percent. LIN 2.2A compliance supports the latest NXP and third-party smart actuators that need enhanced diagnostics, while SAE J2602 compatibility allows the same hardware to serve North-American OEM HVAC networks. The exposed thermal pad and 31.4 C/W theta_JA dissipate worst-case 2.2 A bus-driver heat into a single ground pour.
おすすめ
Door / Window / Liftgate Module
A door-module ECU commonly drives window lift, mirror adjust, ambient lighting, and lock actuators over separate LIN links. The TJA1024HG delivers four LIN lines plus a WAKE input that can wake the ECU on a LIN bus-pattern from a remote master, enabling ISO 11898-1 partial-networking compliance. The integrated dominant time-out prevents a single shorted LIN wire from locking the entire ECU on the bus, while the INH/Reset output drives an external 5V regulator for sequenced MCU power-up on cold-crank events.
おすすめ
Steering Column Switch Cluster
Modern steering-column switches combine wiper, lighting, turn-signal, infotainment and cruise-control buttons into one LIN-slave node, often requiring 2-4 LIN slaves downstream. The TJA1024HG acts as the LIN master hub with 2.2 A drive that can supply power to multiple slave transceivers via the bus pull-up, and its slope-control minimises radiated emissions over the 1-2 m wiring harness typical of column harnesses. Software compatibility with the TJA1027 lets designers reuse existing LIN driver code, accelerating time-to-production.
おすすめ
Ambient Lighting / LED LIN Nodes
Indoor automotive ambient lighting increasingly uses daisy-chained LIN-controlled LED drivers; the TJA1024HG's four LIN channels can drive up to four independent LED subnetworks from one master ECU. Each channel's 2.2 A drive and 20 kBd data rate comfortably supports 8-16 LEDs per node at the typical 10-bit PWM refresh used for color mixing. Sleep mode below 10 uA lets the entire lighting network idle without draining the 12 V battery during parking, which is critical for modern always-connected vehicles.
おすすめ
In-Vehicle LIN Gateway / Sensor Hub
The TJA1024HG is well-suited as a LIN-side termination on a CAN-to-LIN gateway, exposing 4 LIN channels upstream of a CAN-FD backbone used in zonal architectures. Both dual blocks can be independently switched between Normal and Sleep, so the gateway can shut down sub-networks while maintaining a CAN wake-up path. The NXP part's 40 V load-dump protection and ISO 7637 transient immunity make it compatible with the harsh electrical environment near the vehicle's alternator and battery.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TJA1024HG — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TJA1024HGZ | TJA1027T | TJA1022T |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | DHVQFN-24 (SOT815-1) | DHVQFN-24 (SOT815-1) | DHVQFN-8 (SOT782-1) | SO-8 / DHVQFN-8 |
| LIN Channels | 4 (quad) | 4 (quad) | 2 (dual) | 1 (single) |
| Bus Peak Current | 2.2 A | 2.2 A | 2.2 A | 2.2 A |
| LIN Standard Compliance | LIN 2.0/2.1/2.2/2.2A, SAE J2602 | LIN 2.0/2.1/2.2/2.2A, SAE J2602 | LIN 2.0/2.1/2.2/2.2A, SAE J2602 | LIN 2.x, SAE J2602 |
| Supply Voltage VBAT | 5 V to 27 V (40 V load-dump) | 5 V to 27 V (40 V load-dump) | 5 V to 27 V (40 V load-dump) | 5 V to 27 V (40 V load-dump) |
| Software Compatibility | TJA1022 / TJA1027 / TJA1029 | TJA1022 / TJA1027 / TJA1029 | TJA1022 / TJA1027 | TJA1027 / TJA1029 |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified |
主な差別化要因
- Four LIN channels in one 24-pin DHVQFN package （vs TJA1027T (dual LIN, 8-pin DHVQFN))
- Independent dual-block Sleep mode per channel group （vs TJA1027T (dual LIN, single Sleep domain))
- Full LIN 2.2A and SAE J2602 compliance with 20 kBd support （vs TJA1022T (single LIN, 8-pin SO-8))
設計ノート
Place a 100 nF X7R ceramic bypass capacitor as close as possible to the VBAT pin and a 10 uF electrolytic/ceramic bulk capacitor at the IC supply rail to ride through 12 V cold-crank and load-dump transients up to 40 V. The TJA1024HG's internal reverse-battery protection is rated for limited current; for harsh environments add an external series Schottky diode or P-MOSFET reverse-polarity block. The INH/Reset output can drive an external 5V LDO enable pin to gate MCU power and achieve sub-10 uA Sleep current.
Route the LIN bus traces away from switching converter inductors and keep them short and twisted with VBAT to meet ISO 7637-3 and IEC 55803-1 automotive EMC requirements. Connect the exposed thermal pad (pin 24 / centre paddle) to a continuous ground pour of at least 100 mm^2 to keep junction temperature below 150 C at peak 2.2 A bus drive. Decouple each LIN pin to ground with a reverse-biased ESD diode (e.g. PESD1LIN) within 5 mm of the connector.
Do not connect TXDx pins directly to a 5V UART when the MCU runs at 3.3V - use a 1 kohm/2 kohm resistive divider or logic-level translator to keep TXD below 3.3V. Do not exceed the maximum VBAT of 27 V continuous or 40 V transient; sustained over-voltage can damage the internal regulator. When only one dual block is used, leave the unused TXD/RXD/EN/WAKE/LIN pins tied to known states per the datasheet (TXD low, EN high) to avoid floating-bus false wake-ups.
At continuous 2.2 A LIN bus drive the TJA1024HG may dissipate up to 1.5 W in worst-case short-circuit conditions; the DHVQFN-24 has theta_JA around 31 C/W on a 4-layer 2 oz JEDEC board. Estimated: with 100 mm^2 copper pour, junction temperature rise is roughly 31 C/W x 1.5 W = 46.5 C above ambient; ensure ambient stays below ~80 C so junction remains below 125 C. Add a thermal via array under the exposed pad for better heat spreading in high-ambient ECU locations.
コンプライアンス情報
AEC-Q100 qualified for automotive use; LIN 2.0/2.1/2.2/2.2A and SAE J2602 compliant per NXP datasheet. RoHS and REACH compliant per NXP product environmental compliance information.
