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NXP Semiconductors TJA1048T,118
- Part No.:
- TJA1048T,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TJA1048T,118.pdf
- Description:
- IC TRANSCEIVER HALF 2/2 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,182
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Product details
Overview
TJA1048T,118 from NXP Semiconductors is a dual-channel high-speed CAN transceiver compliant with ISO 11898-2:2016 and SAE J2284-1–5, supporting CAN FD fast-phase data rates up to 5 Mbit/s. It provides differential transmit/receive capability between a microcontroller's CAN controller and two independent 12 V/24 V automotive CAN buses, featuring independent Standby mode control per channel and bus wake-up via VIO-powered low-power receivers.
For engineers reviewing the TJA1048T,118 datasheet, TJA1048T,118 pinout, TJA1048T,118 application, or TJA1048T,118 equivalent, key selection criteria include dual-channel bus isolation, sub-2 µA standby current per channel, ±58 V bus fault tolerance, AEC-Q100 qualification, and direct 3 V–5 V MCU interface via VIO.
Technical Context
The TJA1048T,118 integrates two fully independent HS-CAN physical layers-each with dedicated TXD/RXD/STBN/CANH/CANL signal paths, slope-controlled drivers, and dual-mode receivers (normal + low-power wake-up). Its architecture enables simultaneous operation on two CAN networks while maintaining bus disengagement when unpowered.
Each channel implements independent undervoltage detection (VCC: 3.5–4.5 V; VIO: 1.3–2.7 V), TXD dominant time-out (0.5–5 ms), thermal shutdown at 190 °C, and ESD protection of ±6 kV (IEC 61000-4-2) on all bus pins-ensuring robustness in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Data Rate | Up to 5 Mbit/s in CAN FD fast phase-enables high-bandwidth gateway and ADAS communication without protocol layer changes. |
| Standby Current | Typically 0.5 µA per channel-supports ultra-low-power body electronics sleep modes with bus-initiated wake-up. |
| Bus Fault Tolerance | ±58 V on CANH/CANL-survives load-dump and jump-start transients in 12 V/24 V vehicle systems. |
| VIO Supply Range | 2.8 V to 5.5 V-allows direct interfacing with 3 V or 5 V microcontrollers without level shifters. |
| Wake-up Latency | Bus dominant/recessive/dominant pattern detected within 0.5–5 µs-meets ISO 11898-2 wake-up timing for deterministic low-power recovery. |
| ESD Protection | ±6 kV HBM and IEC 61000-4-2 on CANH/CANL-eliminates need for external TVS diodes in most ECU designs. |
| AEC-Q100 Grade | Qualified to Grade 1 (−40 °C to +125 °C ambient)-certified for powertrain, chassis, and body control module deployment. |
Pinout & Package
Package: SO14 (SOT108-1), plastic small outline, 14-lead, 3.9 mm body width. Exposed pad not present; standard leaded package suitable for wave/reflow soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TXD1) | Transmit data input channel 1 | CMOS-level input controlling CANH1/CANL1 driver; internal pull-up to VIO ensures safe HIGH state if floating. |
| 2 (GNDA) | Ground reference for channel 1 | Must be connected externally to GNDB (pin 5); forms local ground return for first transceiver channel. |
| 3 (VCC) | Main supply voltage (4.5–5.5 V) | Power source for transmitter drivers and normal-mode receivers; undervoltage lockout triggers Standby if <3.5 V. |
| 4 (RXD1) | Receive data output channel 1 | CMOS-level output reflecting bus state on CANH1/CANL1; LOW indicates wake-up event in Standby mode. |
| 5 (GNDB) | Ground reference for channel 2 | Must be connected externally to GNDA (pin 2); forms local ground return for second transceiver channel. |
| 6 (TXD2) | Transmit data input channel 2 | Independent control of CANH2/CANL2; identical electrical behavior to TXD1 with separate time-out timer. |
| 7 (RXD2) | Receive data output channel 2 | Isolated digital output for second bus; reflects wake-up activity independently of RXD1. |
| 8 (STBN2) | Standby control input channel 2 | LOW = Standby (bus disengaged, VIO-powered wake-up active); HIGH = Normal mode; internal pull-down ensures default Standby. |
| 9 (CANL2) | CAN bus low line channel 2 | Differential bus terminal rated for −58 V to +58 V; integrated common-mode input resistance (19–52 kΩ) improves noise immunity. |
| 10 (CANH2) | CAN bus high line channel 2 | Differential bus terminal with dominant output symmetry ≤±300 mV-ensures consistent signal integrity across temperature. |
| 11 (VIO) | I/O supply voltage (2.8–5.5 V) | Sets logic levels for TXD/RXD/STBN pins and powers low-power wake-up receiver-enables wake-up even with VCC off. |
| 12 (CANL1) | CAN bus low line channel 1 | Electrically isolated from CANL2; supports independent termination and stub length per channel per ISO 11898-2. |
| 13 (CANH1) | CAN bus high line channel 1 | Paired with CANL1 for first differential bus; driver output voltage symmetry guaranteed over full junction temperature range. |
| 14 (STBN1) | Standby control input channel 1 | Independent mode control for channel 1; allows asymmetric operation (e.g., one channel active, one in Standby). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent HS-CAN channels | Two fully isolated transceivers in one SO14 package-reduces BOM count and PCB area vs. discrete dual-TJA1042 solutions. |
| Bus wake-up with VIO-only supply | Low-power receiver remains active on VIO alone-enables system wake-up without main VCC rail energized. |
| TXD dominant time-out (0.5–5 ms) | Prevents permanent bus dominance due to MCU lockup; independent timers per channel avoid cross-channel interference. |
| Zero-load bus disengagement | Transceiver presents no load to CANH/CANL when VCC = 0 V-prevents network disturbance during power sequencing. |
| Integrated undervoltage detection | VCC and VIO thresholds trigger automatic Standby entry-avoids undefined behavior during brown-out conditions. |
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood and cabin applications-meets lifetime reliability requirements for OEM production. |
Applications
| Body Control Module (BCM) | Vehicle Gateway Unit |
|---|---|
Use Scenario: Centralized management of door locks, lighting, HVAC, and window controls across multiple CAN subnets. IC Role / Device Role / Timing Role: Dual-channel transceiver bridges low-speed body network (CAN1) and high-speed infotainment backbone (CAN2) with independent wake-up arbitration. Use Value: Enables selective channel Standby-e.g., CAN1 stays awake for proximity wake-up while CAN2 sleeps-reducing total system quiescent current below 1 µA. |
Use Scenario: Aggregating data from powertrain, chassis, and ADAS ECUs before routing to telematics or OTA update modules. IC Role / Device Role / Timing Role: Provides two isolated, 5 Mbit/s CAN FD interfaces with precise timing symmetry (±40 ns bit-time deviation) for deterministic message forwarding. Use Value: Eliminates need for external bus isolators or discrete transceivers-reducing latency, component count, and failure points in safety-critical routing paths. |
| Advanced Driver Assistance System (ADAS) ECU | Electric Power Steering (EPS) Control Unit |
Use Scenario: Real-time sensor fusion between radar, camera, and ultrasonic modules requiring synchronized timestamping and low-latency actuator commands. IC Role / Device Role / Timing Role: Dual-channel interface connects front radar (CAN1) and surround-view camera cluster (CAN2), each with independent slope control for EMI optimization. Use Value: Guaranteed 5 Mbit/s FD throughput with <250 ns TXD-to-RXD delay enables sub-millisecond closed-loop response-critical for emergency braking coordination. |
Use Scenario: High-integrity torque command delivery from steering angle sensor to motor driver, with fail-safe monitoring via redundant CAN path. IC Role / Device Role / Timing Role: One channel handles primary torque commands (CAN1); second channel carries diagnostic/health status (CAN2) with independent wake-up for fault reporting. Use Value: Independent STBN control allows diagnostic channel to remain active during torque-command sleep cycles-ensuring continuous fault visibility without increasing power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel HS-CAN transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3051ESA+ | Single-channel, 1 Mbps max, no Standby mode or wake-up, ±36 V fault tolerance | Limited to basic 12 V body networks; cannot support CAN FD or dual-bus gateways | Select only for cost-sensitive, non-automotive 1 Mbps point-to-point links where low power and dual channels are unnecessary. |
| TJA1057GT/3 | Single-channel, 5 Mbit/s CAN FD, AEC-Q100, 1.5 µA Standby, but no VIO-powered wake-up | Requires VCC to be maintained for wake-up-unsuitable for deep-sleep architectures where VCC is switched off | Choose when system design maintains VCC in sleep mode and only one CAN interface is needed; lower pin count than TJA1048T,118. |
Compared with MAX3051ESA+ and TJA1057GT/3, the TJA1048T,118 uniquely delivers dual 5 Mbit/s CAN FD channels with independent VIO-powered wake-up-making it the only option for automotive gateways requiring asymmetric low-power operation across two isolated networks.
Availability
TJA1048T,118 is available at Aetrix Electronics and suitable for Body Control Modules, Vehicle Gateway Units, and ADAS Electronic Control Units requiring stable component supply, AEC-Q100 compliance, and dual-channel CAN FD connectivity.
Supply support for TJA1048T,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications-with core expertise in CAN, LIN, and automotive Ethernet physical layers.
The TJA1048T,118 belongs to NXP's third-generation high-speed CAN transceiver family, engineered specifically for automotive gateway and body electronics demanding dual-bus isolation, ultra-low-power Standby, and robust EMC/ESD performance.
FAQ
What is the maximum data rate supported by the TJA1048T,118 in CAN FD fast phase?
The TJA1048T,118 supports data rates up to 5 Mbit/s in the CAN FD fast phase, as specified in ISO 11898-2:2016. This capability is validated across the full operating temperature range (−40 °C to +125 °C) and supply voltage range (VCC = 4.5 V to 5.5 V, VIO = 2.8 V to 5.5 V), enabling high-throughput communication in modern automotive gateways and ADAS systems using the TJA1048T,118.
How does the TJA1048T,118 achieve wake-up from Standby mode when VCC is off?
The TJA1048T,118 uses its VIO supply pin to power a dedicated low-power differential receiver that monitors CANH/CANL for ISO-defined wake-up patterns-even when VCC is disconnected. Upon detecting a valid dominant-recessive-dominant sequence within 5 ms, RXD1 or RXD2 asserts LOW, signaling wake-up to the host MCU. The TJA1048T,118 remains in Standby until STBN1/STBN2 is driven HIGH, ensuring controlled mode transition.
What is the purpose of the dual ground pins (GNDA and GNDB) on the TJA1048T,118?
GNDA (pin 2) and GNDB (pin 5) provide separate ground references for channel 1 and channel 2, respectively, minimizing crosstalk between the two independent CAN transceivers. The datasheet requires these pins to be connected together externally in the application layout-ensuring a common reference while preserving channel isolation. This design supports independent bus termination and reduces ground bounce in high-speed dual-network configurations using the TJA1048T,118.
Does the TJA1048T,118 include protection against bus faults such as short-to-battery or short-to-ground?
Yes, the TJA1048T,118 withstands bus voltages from −58 V to +58 V on CANH and CANL pins, covering automotive load-dump (ISO 7637-2 Pulse 1/2a/3a/3b) and jump-start conditions. It also features dominant short-circuit output current limiting (±70 mA typical) and thermal shutdown at 190 °C. These protections are intrinsic to the silicon design and require no external components-enhancing system robustness in real-world vehicle deployments of the TJA1048T,118.
Can the TJA1048T,118 operate with a 3 V microcontroller supply?
Yes, the TJA1048T,118 supports VIO from 2.8 V to 5.5 V, allowing direct connection to 3 V microcontrollers without level-shifting circuitry. Its TXD, RXD, and STBN pins are referenced to VIO, and the internal I/O level adapter ensures correct logic thresholds. When VIO = 3 V, VIH(min) = 2.1 V and VIL(max) = 0.9 V-fully compatible with standard 3 V CMOS outputs-making the TJA1048T,118 suitable for low-voltage automotive domains.
TJA1048T,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- CANbus
- Number of Drivers/Receivers:
- 2/2
- Duplex:
- Half
- Receiver Hysteresis:
- 120 mV
- Data Rate:
- 5Mbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TJA1048T,118 FAQ
1.How can I place an order for TJA1048T,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for TJA1048T,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TJA1048T,118 reliable?
The price and inventory of TJA1048T,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1048T,118 is usually 5 days.
3.What payment methods are accepted for TJA1048T,118?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TJA1048T,118?
TJA1048T,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TJA1048T,118 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TJA1048T,118?
For technical support, including TJA1048T,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1048T,118 requirements.
6.How does Aetrix verify that TJA1048T,118 is sourced from the original manufacturer or authorized distributors?
All TJA1048T,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TJA1048T,118 meets industry standards.
7.What is the process for return or replacement of TJA1048T,118?
All TJA1048T,118 units undergo pre-shipment inspection (PSI). If there is an issue with TJA1048T,118, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TJA1048T,118 part is unused and in its original packaging.
Return procedure for TJA1048T,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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