interface

TJA1042

Full part number: TJA1042BT

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This NXP datasheet covers the TJA1042 family of high-speed CAN transceivers, including variants like the T and CT versions with a SPLIT pin for bus stabilization. Designed for automotive applications, it interfaces microcontrollers to the physical CAN bus, supporting data rates up to 5 Mbit/s in CAN FD mode. Key parameters include supply voltages from 4.5V to 5.5V, low standby current around 10-15 µA, and robust ESD protection up to ±8 kV. The device features fail-safe behavior, thermal protection, and is available in SO8 or HVSON8 packages.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current 2.5 mA 5 mA 10 mA Normal mode; bus recessive
output voltage 2.75 V 3.5 V 4.5 V pin CANH; RL = 50 Ω to 65 Ω
output current -9 mA -3 mA -1 mA VRXD = VIO- 0.4 V [4]
supply voltage range 4.5 V — 5.5 V
input offset voltage 1.3 V 2 V 2.7 V
operating temperature -40 °C — 150 °C
input capacitance — 5 pF 10 pF [6]
propagation delay — 60 ns —
data rate — 5 Mbps —
channel count — 1 —
driver count — 1 —
receiver count — 1 —
03 — Alternatives

Closest matches to TJA1042

TJA1043 9.6× higher quiescent current, 2.0× higher output current, 1.1× lower input offset voltage
TJA1051 5.0× lower quiescent current, 1.1× higher propagation delay, similar data rate
SN65HVD230 13.3× higher output current, 6.4× higher input capacitance, 2.0× higher quiescent current
ISO1050DUBR 2.8× lower quiescent current, 2.2× lower operating temperature, 1.2× higher propagation delay
TLE6250C 5.0× lower data rate, 2.5× higher propagation delay, 1.3× higher output current
SN65LBC184 20.0× lower data rate, 8.3× higher propagation delay, 4.4× lower output voltage
MCP2518FD 10.0× lower data rate, 3.0× higher quiescent current, 1.2× lower supply voltage range
MCP2551 15.0× higher quiescent current, 6.7× lower supply voltage range, 5.0× lower data rate
04 — FAQ

Frequently asked questions

What is the channel count of the TJA1042BT?

The channel count is 1.

What is the maximum data rate of the TJA1042BT?

The maximum data rate is 5 Mbps.

What is the driver count for the TJA1042BT?

The driver count is 1.

What is the input capacitance of the TJA1042BT?

The input capacitance is 5 pF [6].

What is the input offset voltage?

The input offset voltage is 2 V.

What is the maximum operating temperature for the TJA1042BT?

The maximum operating temperature is 150 °C.

What is the output current when VRXD = VIO- 0.4 V?

The output current is -3 mA.

What is the output voltage at pin CANH when RL is 50 Ω to 65 Ω?

The output voltage is 3.5 V.

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