TJA1051T/3
TJA1051
Overview
Part: TJA1051
Type: High-speed CAN transceiver
Key Specs:
- Data Rate: Up to 1 Mbit/s
- System Voltage Compatibility: 12 V and 24 V systems
- Microcontroller Interface Voltage: 3 V to 5 V (for TJA1051T/3 and TJA1051TK/3)
- Minimum Bit Rate: 40 kbit/s
Features:
- Improved ElectroMagnetic Compatibility (EMC) and ElectroStatic Discharge (ESD) performance
- Ideal passive behavior to CAN bus when supply voltage is off
- Direct interfacing to microcontrollers with 3 V to 5 V supply voltages (TJA1051T/3, TJA1051TK/3)
- Fully ISO 11898-2 compliant
- Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
- Functional behavior predictable under all supply conditions
- Transceiver disengages from the bus when not powered up (zero load)
- High ElectroStatic Discharge (ESD) handling capability on bus pins
- Bus pins protected against transients in automotive environments
- Transmit Data (TXD) dominant time-out function
- Undervoltage detection on pins VCC and VIO
- Thermally protected
- Improved slope control
- High DC handling capability on bus pins
- Supports Normal and Silent operating modes
Applications:
- High-speed CAN applications in the automotive industry
- HS-CAN networks not requiring standby mode with wake-up capability via the bus
Package:
- SO8
- HVSON8
Features
2.1 General
- Fully ISO 11898-2 compliant
- Suitable for 12 V and 24 V systems
- Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
- VIO input on TJA1051T/3 and TJA1051TK/3 allows for direct interfacing with 3 V to 5 V microcontrollers (available in SO8 and very small HVSON8 packages respectively)
2.2 Low-power management
- Functional behavior predictable under all supply conditions
- Transceiver disengages from the bus when not powered up (zero load)
2.3 Protection
- High ElectroStatic Discharge (ESD) handling capability on the bus pins
- Bus pins protected against transients in automotive environments
- Transmit Data (TXD) dominant time-out function
- Undervoltage detection on pins VCC and VIO
- Thermally protected
High-speed CAN transceiver
Pin Configuration
Table 2. Pin description
| Symbol | Pin | Description |
|---|---|---|
| Cyllibol | Description | |
| TXD | 1 | transmit data input |
| GND | 2 | ground supply |
| V CC | 3 | supply voltage |
| RXD | 4 | receive data output; reads out data from the bus lines |
| n.c. | 5 | not connected; in TJA1051T version only |
| V IO | 5 | supply voltage for I/O level adapter; in TJA1051T/3 and TJA1051TK/3 versions only |
| CANL | 6 | LOW-level CAN bus line |
| CANH | 7 | HIGH-level CAN bus line |
| S | 8 | Silent mode control input |
Thermal Information
Table 5. Thermal characteristics
According to IEC 60747-1.
| Symbol | Parameter | Conditions | Value | Unit |
|---|---|---|---|---|
| Rth(vj-a) | thermal resistance from virtual junction to ambient | SO8 package; in free air | 155 | K/W |
| HVSON8 package; in free air | 55 | K/W |
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| TJA1051 | — | — |
| TJA1051T | — | — |
| TJA1051TK/3 | — | — |
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