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NXP Semiconductors TJA1050T/CM,118
- Part No.:
- TJA1050T/CM,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TJA1050T/CM,118.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:37,779
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Product details
Overview
TJA1050T/CM,118 from NXP Semiconductors (formerly Philips) is a high-speed CAN transceiver IC that serves as the physical layer interface between a CAN protocol controller and the differential bus. It supports up to 1 Mbaud data rate, features ±27 V DC bus voltage tolerance on CANH/CANL, includes TXD dominant time-out and thermal shutdown protection, and is designed for automotive nodes requiring robust EMI immunity and unpowered-bus compatibility.
For engineers reviewing the TJA1050T/CM,118 datasheet, TJA1050T/CM,118 pinout, TJA1050T/CM,118 application, or TJA1050T/CM,118 equivalent, key selection criteria include ISO 11898 compliance, silent mode operation via pin S, differential receiver common-mode range (−12 V to +12 V), recessive bus voltage matching (2.5 V typical), and SO8 package thermal resistance (145 K/W).
Technical Context
The TJA1050T/CM,118 implements a fully differential transmitter and receiver architecture compliant with ISO 11898, with matched CANH/CANL output drivers minimizing electromagnetic emission. Its internal TXD dominant time-out timer disables transmission after 250–750 µs of sustained LOW, preventing bus lock-up.
Thermal protection activates at 155–180 °C junction temperature, disabling only the transmitter while preserving RXD functionality. Pin S selects high-speed mode (S = GND) or silent mode (S = VCC), enabling fail-safe network operation during controller faults without disrupting bus integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Data Rate | Up to 1 Mbaud - enables real-time vehicle control messaging in modern ECUs. |
| Supply Voltage | 4.75 V to 5.25 V - compatible with standard 5 V automotive power rails. |
| Bus Voltage Range | CANH/CANL: −27 V to +40 V - withstands load dump and jump-start transients per ISO 7637. |
| Differential Input Threshold | 0.5 V to 0.9 V with 50–100 mV hysteresis - ensures reliable dominant/recessive detection under noise. |
| Propagation Delay | TXD to RXD: ≤250 ns - supports timing-critical high-speed CAN networks. |
| Thermal Shutdown | Triggers at 155–180 °C - protects against short-circuit-induced overheating without full system reset. |
| Input Compatibility | TXD/RXD/S logic levels compatible with both 3.3 V and 5 V controllers - simplifies mixed-voltage system integration. |
Pinout & Package
Package: SO8 (SOT96-1), plastic small outline, 8 leads, body width 3.9 mm, thermal resistance 145 K/W (junction-to-ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TXD | Transmit data input | Accepts digital signal from CAN controller; triggers dominant time-out if held LOW >250 µs. |
| 2 - GND | Ground reference | Common return for all internal circuits; must be low-impedance for EMI performance. |
| 3 - VCC | Power supply | 5 V nominal supply; powers transmitter, receiver, and internal bias circuits. |
| 4 - RXD | Receive data output | CMOS-compatible output reflecting bus state; remains functional during thermal shutdown. |
| 5 - Vref | Reference voltage output | 0.45–0.55 × VCC - used for external bus termination calibration or diagnostic monitoring. |
| 6 - CANL | Low-side bus line | Differential bus terminal; rated for −27 V to +40 V; protected against ISO 7637 transients. |
| 7 - CANH | High-side bus line | Differential bus terminal; complements CANL; matched impedance ensures low EME. |
| 8 - S | Mode select input | GND = high-speed mode; VCC = silent mode (transmitter disabled, receiver active). |
Key Features
| Feature | Design Value |
|---|---|
| ISO 11898 Compliance | Fully compliant physical layer implementation - ensures interoperability across automotive CAN networks. |
| Dominant Time-Out Protection | Hardware timer disables transmitter after 250–750 µs of TXD LOW - prevents permanent bus dominance due to controller failure. |
| Silent Mode Operation | Pin S = VCC disables transmitter while preserving RXD and bus monitoring - enables diagnostics without network disruption. |
| Unpowered Node Immunity | Bus lines remain recessive when VCC < 2 V - avoids contention in partial-power-down network configurations. |
| EMI-Optimized Driver Matching | Matched CANH/CANL rise/fall times and output impedance - reduces radiated emissions below 50 MHz peak limits. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Centralized vehicle subsystem communication managing lighting, door locks, and climate functions. IC Role / Device Role / Timing Role: Physical layer transceiver converting controller UART-like signals to differential CAN bus levels. Use Value: Enables 500 kbaud+ communication with >110 node capacity while surviving automotive load dump transients. | Use Scenario: Real-time engine parameter monitoring and actuator control in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: High-speed CAN interface ensuring sub-250 ns propagation delay for closed-loop timing-critical commands. Use Value: Maintains bus integrity during thermal overload (shuts down transmitter only) and supports silent mode for safe firmware updates. |
| Advanced Driver Assistance Systems (ADAS) | Electric Power Steering (EPS) |
Use Scenario: Sensor fusion and camera/radar data exchange between distributed ADAS ECUs. IC Role / Device Role / Timing Role: Robust transceiver providing wide common-mode receiver range (−12 V to +12 V) for noisy chassis environments. Use Value: Delivers >70 mV differential input hysteresis to reject coupled noise in high-EMI ADAS sensor harnesses. | Use Scenario: Torque feedback and motor control loop communication in steer-by-wire systems. IC Role / Device Role / Timing Role: Fault-tolerant CAN interface with short-circuit proof outputs (±95 mA CANH/CANL) and battery-ground protection. Use Value: Survives direct shorts to battery or ground without latch-up, ensuring EPS safety continuity per ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP2551-I/P | Higher quiescent current (12 mA recessive vs. 2.5–10 mA); no Vref output; identical SO8 footprint. | Lacks silent mode and Vref monitoring capability; lower EMI performance per test data. | Choose MCP2551-I/P only when legacy design reuse or cost sensitivity outweighs need for thermal protection and diagnostic features. |
| TJA1042T/3/1J | Enhanced wake-up capability, improved bus fault tolerance (±70 V), and integrated standby mode not present in TJA1050T/CM,118. | Supports partial networking and ultra-low-power sleep states unsuitable for TJA1050T/CM,118's fixed high-speed/silent dual-mode operation. | Select TJA1042T/3/1J for next-gen designs requiring wake-on-CAN or extended bus voltage resilience beyond ±40 V. |
Compared with MCP2551-I/P, TJA1050T/CM,118 offers superior thermal protection and silent mode diagnostics; compared with TJA1042T/3/1J, it lacks wake-up but delivers proven EMI performance and simpler mode control-making it optimal for cost-sensitive, high-volume automotive modules where full feature set isn't required.
Availability
TJA1050T/CM,118 is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, ADAS domain controllers, and electric power steering modules requiring stable component supply across long production lifecycles.
Supply support for TJA1050T/CM,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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The TJA1050T/CM,118 belongs to NXP's legacy high-speed CAN transceiver family, engineered specifically for robustness in 12 V automotive electrical environments with emphasis on EMI reduction, bus fault resilience, and fail-safe operation.
FAQ
What is the maximum data rate supported by the TJA1050T/CM,118?
The TJA1050T/CM,118 supports a maximum data rate of 1 Mbaud, as confirmed in the Quick Reference Data and Functional Description sections of its datasheet. This enables high-speed communication in demanding automotive applications such as engine control and ADAS sensor networks. The TJA1050T/CM,118 maintains signal integrity at this rate through matched driver outputs and low-propagation-delay design.
Does the TJA1050T/CM,118 include thermal protection?
Yes, the TJA1050T/CM,118 incorporates thermal shutdown circuitry that disables the transmitter when the virtual junction temperature reaches 155–180 °C. All other functions-including RXD output and bus monitoring-remain operational. This allows continued diagnostics even during overtemperature events. The TJA1050T/CM,118 resumes normal transmission only after TXD goes HIGH and temperature falls below the hysteresis threshold.
How does the silent mode function on the TJA1050T/CM,118?
Silent mode on the TJA1050T/CM,118 is activated by connecting pin S to VCC, which disables the transmitter while keeping the receiver and Vref output fully functional. This allows the node to monitor bus traffic without transmitting, preventing network blockage caused by faulty CAN controllers. Silent mode is a hardware-controlled feature independent of VCC level, and the TJA1050T/CM,118 enters it immediately upon S reaching VCC.
What bus voltage levels can the TJA1050T/CM,118 withstand on CANH and CANL pins?
The TJA1050T/CM,118 guarantees DC bus voltage tolerance of −27 V to +40 V on both CANH and CANL pins under continuous operation, as specified in the Limiting Values table. Additionally, it withstands transient pulses up to ±200 V per ISO 7637 test pulses 1, 2, 3a, and 3b-making it suitable for harsh automotive environments including load dump and jump-start conditions.
Is the TJA1050T/CM,118 pin-compatible with earlier Philips CAN transceivers like PCA82C250?
No, the TJA1050T/CM,118 is not pin-compatible with the PCA82C250 or PCA82C251. While all three are high-speed CAN transceivers, the TJA1050T/CM,118 introduces pin S for mode selection and pin Vref for reference voltage output-neither present in the older devices. PCB layout changes are required for replacement. The TJA1050T/CM,118 also uses an optimized SO8 (SOT96-1) package distinct from the PCA82C250's DIP8 or SO8 variants.
TJA1050T/CM,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- CANbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 70 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TJA1050T/CM,118 FAQ
1.How can I place an order for TJA1050T/CM,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for TJA1050T/CM,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 TJA1050T/CM,118 reliable?
The price and inventory of TJA1050T/CM,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TJA1050T/CM,118 is usually 5 days.
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4.How is shipping managed for TJA1050T/CM,118?
TJA1050T/CM,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TJA1050T/CM,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 TJA1050T/CM,118?
For technical support, including TJA1050T/CM,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TJA1050T/CM,118 requirements.
6.How does Aetrix verify that TJA1050T/CM,118 is sourced from the original manufacturer or authorized distributors?
All TJA1050T/CM,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 TJA1050T/CM,118 meets industry standards.
7.What is the process for return or replacement of TJA1050T/CM,118?
All TJA1050T/CM,118 units undergo pre-shipment inspection (PSI). If there is an issue with TJA1050T/CM,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 TJA1050T/CM,118 part is unused and in its original packaging.
Return procedure for TJA1050T/CM,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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