TJA1051
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the TJA1051 does
The TJA1051x is a high-speed CAN transceiver interfacing a controller to the physical two-wire bus for automotive applications. It supports data rates up to 5Mbit/s in the CAN FD fast phase and operates across 12V and 24V systems. Variants include the TJA1051T, TJA1051T/3, TJA1051T/E, and TJA1051TK/3, available in SO8 or HVSON8 packages. Key parameters include a supply voltage range of 4.5 to 5.5V, a virtual junction temperature span from -40 to +150°C, and ESD ratings of ±8kV. The device features low supply current in silent mode, typically 0.1mA, and handles bus transients effectively. It is ideal for HS-CAN networks where nodes do not require standby wake-up capabilities, ensuring reliable communication in harsh automotive environments.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | 2.5 mA | 5 mA | 10 mA | Normal mode; bus recessive; icc; Quick reference data | NXP datasheet, p. 2 — Table 1. Quick reference data |
| output voltage | 2.75 V | 3.5 V | 4.5 V | pin CANH; RL = 50 Ω to 65 Ω; vo(dom); Bus lines; pins CANH and CANL | NXP datasheet, p. 8 — 10. Static characteristics |
| supply voltage range | 4.5 V | — | 5.5 V | vcc; Quick reference data | NXP datasheet, p. 2 — Table 1. Quick reference data |
| abs max voltage (abs max) | -27 V | — | 27 V | NXP datasheet, p. 7 — Table 5. Limiting values | |
| input offset voltage | 1.3 V | 2 V | 2.7 V | vuvd(vio); Quick reference data | NXP datasheet, p. 2 — Table 1. Quick reference data |
| operating temperature | -40 °C | — | 150 °C | virtual junction temperature Tvj | NXP datasheet, p. 2 — Table 1. Quick reference data |
| input capacitance | — | 5 pF | 10 pF | [6]-; ci; CAN transmit data input; pin TXD | NXP datasheet, p. 8 — 10. Static characteristics |
| propagation delay | 40 ns | — | 220 ns | delay time from TXD LOW to RXD LOW (td(TXDL-RXDL)); Normal mode; other versions | NXP datasheet, p. 10 — 11. Dynamic characteristics |
| data rate | — | 5 Mbps | — | CAN FD fast phase | NXP datasheet, p. 1 |
| channel count | — | 1 | — | NXP datasheet, p. 1 | |
| driver count | — | 1 | — | NXP datasheet, p. 1 |
Closest matches to TJA1051
Frequently asked questions
What is the absolute maximum voltage rating for the TJA1051?
The absolute maximum voltage is 27 V.
What is the channel count of the TJA1051?
The channel count is 1.
What is the data rate during the CAN FD fast phase?
The data rate is 5 Mbps.
What is the driver count for the TJA1051?
The driver count is 1.
What is the input capacitance of the CAN transmit data input pin (TXD)?
The input capacitance is 5 pF.
What is the input offset voltage under the condition vuvd(vio) in the Quick reference data?
The input offset voltage is 2 V.
What is the maximum operating temperature specified for the TJA1051?
The maximum operating temperature is 150 °C, defined as the virtual junction temperature Tvj.
What is the output voltage on pin CANH with RL = 50 Ω to 65 Ω and vo(dom) on Bus lines pins CANH and CANL?
The output voltage is 3.5 V.
What is the propagation delay from TXD LOW to RXD LOW in normal mode for other versions of the TJA1051?
The propagation delay is 220 ns.
What is the quiescent current in Normal mode with the bus recessive and icc?
The quiescent current is 5 mA.
What is the supply voltage range for the TJA1051?
The supply voltage range is 5.5 V at VCC in the Quick reference data.