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TJA1050T

1Mbps CAN transceiver, ISO 11898, SOIC-8, 15uA standby, EMC optimized, PCA82C250 upgrade

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Manufacturer Part：

TJA1050T

Package：

SOIC-8 (4.90 x 3.90 x 1.37 mm)

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Description

Product Overview

The TJA1050T from NXP is a high-speed CAN transceiver in a SOIC-8 package. Compliant with ISO 11898, it provides the physical layer between the CAN protocol controller and the bus at up to 1Mbps with excellent EMC performance.

Key Specifications

Protocol CAN 2.0A/B (ISO 11898)
Data Rate Up to 1 Mbps
Bus Voltage -27V to +40V (common mode)
Supply Voltage 4.75 V to 5.25 V
Standby Current 15 uA (typical)
Operating Temperature -40C to +125C

Features

  • ISO 11898 compliant high-speed CAN transceiver at 1Mbps
  • Excellent EMC performance with slope control
  • Bus pins protected against automotive transients
  • 15uA standby mode with remote wake-up capability
  • TXD dominant timeout protection against bus lock-up
  • SOIC-8 industry-standard footprint compatible with PCA82C250

Applications

  • Automotive CAN bus network nodes
  • Industrial CAN communication networks
  • Building automation and elevator control
  • Medical equipment inter-module communication

The TJA1050T from NXP Semiconductors is a high-speed CAN transceiver in a SOIC-8 package, serving as the interface between the CAN protocol controller and the physical bus. The device is fully compliant with the ISO 11898 standard and supports data rates up to 1Mbps. As an upgraded replacement for the PCA82C250, the TJA1050 offers improved EMC performance, lower standby current, and TXD dominant timeout protection while maintaining pin compatibility. The differential transmitter and receiver provide robust communication in noisy automotive and industrial environments. The bus pins are protected against automotive electrical transients including jump-start and load dump conditions. The 15uA typical standby current enables battery-friendly operation in always-connected systems. The TXD dominant timeout feature prevents a permanently dominant bus condition that could be caused by a stuck TXD input, a critical safety feature in multi-node CAN networks. The SOIC-8 package footprint is compatible with the PCA82C250, allowing direct PCB upgrade without layout changes.

The TJA1050T converts between the MCU’s digital CAN signals and the differential bus signals. (1) Transmit: When the MCU drives TXD low (dominant), the transceiver drives CANH high (~3.5V) and CANL low (~1.5V), creating a ~2V differential voltage on the bus. When TXD is high (recessive), both CANH and CANL are biased to ~2.5V (no differential voltage). (2) Receive: The differential receiver monitors the CANH-CANL voltage. When the differential exceeds ~0.9V, RXD is driven low (dominant). When below the threshold, RXD is high (recessive). (3) Slope Control: For lower data rates, the output slope can be reduced by connecting a resistor from the S pin to ground, improving EMC performance by reducing high-frequency content in the bus signals. (4) TXD Timeout: If TXD is held low for longer than the timeout period (typically 1-2ms), the transmitter is disabled, preventing a single faulty node from locking the bus in the dominant state. (5) Standby: In standby mode (S pin high), the transmitter is disabled and the receiver operates in low-power mode, drawing only 15uA.

Pin Name Type Function
1 TXD Input Transmit data input (from MCU CAN controller)
2 GND Ground Ground
3 VCC Power Supply (4.75-5.25V)
4 RXD Output Receive data output (to MCU CAN controller)
5 S Input Standby/slope control
6 CANL I/O CAN bus low (differential)
7 CANH I/O CAN bus high (differential)
8 STB Input Standby mode control (active low)
  • Automotive CAN bus network nodes at 1Mbps with EMC optimization
  • Industrial CAN communication networks with TXD timeout protection
  • Building automation and elevator control with PCA82C250 upgrade path
  • Medical equipment inter-module communication with 15uA standby
Manufacturer Part Number Package Notes
NXP TJA1042T SOIC-8 CAN FD, pin-compatible upgrade
TI SN65HVD230DR SOIC-8 3.3V CAN transceiver
Microchip MCP2551-I/SN SOIC-8 Classic CAN, popular
Infineon TLE7250GVIOXUMA1 SOIC-8 CAN FD, 5V/3.3V VIO
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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