TJA1043 — Datasheet Summary, Specs & Alternatives

01 — Overview

This NXP datasheet covers the TJA1043, a high-speed CAN transceiver for automotive applications. It interfaces CAN protocol controllers to two-wire buses, supporting ISO 11898-2 and SAE J2284 standards with data rates up to 5 Mbit/s in CAN FD mode. Key parameters include supply voltages of 4.5-5.5 V (VCC) and 2.8-5.5 V (VIO), typical currents of 65 mA in dominant mode or 9 mA in recessive mode, and ESD ratings of +/-8 kV. The device features low-power sleep modes with wake-up recognition, comprehensive bus protection including short-circuit detection, and thermal safeguards. It is available in SO14 and HVSON14 packages and is AEC-Q100 qualified.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	30 mA	48 mA	65 mA	Normal mode; bus dominant
output voltage	2.75 V	3.5 V	4.5 V	pin CANH; R_L = 50 \Omegato65 \Omega
output current	-12 mA	-6 mA	-1 mA	V_{RXD} = V_{IO} - 0.4 \text{ V}; V_{IO} = V_{CC}
supply voltage range	4.5 V	—	5.5 V
input offset voltage	800 mV	1.8 V	2.5 V	VBATor VCC> 4.5 V
operating temperature	-40 °C	—	150 °C
input capacitance	—	5 pF	10 pF	not tested
propagation delay	—	60 ns	—
data rate	—	5 Mbps	—
channel count	—	1	—
driver count	—	1	—
receiver count	—	1	—

03 — Alternatives

Closest matches to TJA1043

TJA1042BT 9.6× lower quiescent current, 2.0× lower output current, 1.1× higher input offset voltage

TJA1051 2.0× lower output current, 1.1× higher input offset voltage, 1.1× higher propagation delay

ISO1050DUBR 12.0× higher output current, 2.2× lower operating temperature, 1.2× higher propagation delay

SN65HVD230 6.7× higher output current, 6.4× higher input capacitance, 4.8× lower quiescent current

TLE6250C 5.0× lower data rate, 2.5× higher propagation delay, 1.5× lower output current

SN65LBC184 20.0× lower data rate, 20.0× higher output current, 8.3× higher propagation delay

MCP2551 6.7× lower supply voltage range, 5.0× lower data rate, 2.4× lower operating temperature

MCP2518FD 10.0× lower data rate, 3.2× lower quiescent current, 1.2× lower supply voltage range

04 — FAQ

Frequently asked questions

What is the channel count of the TJA1043?

The channel count is 1.

What is the maximum data rate of the TJA1043?

The maximum data rate is 5 Mbps.

What is the driver count for the TJA1043?

The driver count is 1.

What is the input capacitance of the TJA1043?

The input capacitance is 5 pF, which is not tested.

What is the input offset voltage when VBAT or VCC > 4.5 V?

The input offset voltage is 1.8 V when VBAT or VCC > 4.5 V.

What is the maximum operating temperature for the TJA1043?

The maximum operating temperature is 150 °C.

What is the output current when V_{RXD} = V_{IO} - 0.4 ext{ V} and V_{IO} = V_{CC}?

The output current is -6 mA.

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

The output voltage is 3.5 V.