ISO1050 — Datasheet Summary, Specs & Alternatives

01 — Overview

This TI datasheet covers the ISO1050DUBR, an isolated CAN transceiver meeting ISO11898-2 standards. It provides galvanic isolation up to 2500 V RMS for automotive and industrial use, featuring fail-safe outputs and robust bus-fault protection from -27V to 40V. Key parameters include a low loop delay of 150 ns typical, driver dominant time-out functionality, and support for 3.3V and 5V logic levels. The device operates at speeds up to 1 Mbps with excellent transient immunity and safety certifications like UL 1577 and TUV reinforced insulation.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	1.8 mA	3.6 mA	VI = 0 V or VCC1, VCC1 = 3.3 V
output voltage	2.9 V	3.5 V	4.5 V	SeeFigure 4andFigure 5, VI = 0 V, RL = 60Ω
output current	—	360 µA	1 mA	SeeFigure 14, VCANH = 12 V, CANL Open
supply voltage range	3 V	—	5.5 V
operating temperature	-55 °C	—	105 °C
power dissipation	—	—	200 mW	mW
input capacitance	—	6 pF	—	TXD at 3 V, VI = 0.4 sin (4E6πt) + 2.5V
isolation voltage	2.5 kV	—	—	t = 60 sec (qualification)
propagation delay	31 ns	74 ns	110 ns	See Figure 7
data rate	—	1 bps	—
rise time	—	20 ns	50 ns	See Figure 7
fall time	—	20 ns	50 ns	See Figure 7
output voltage high	—	4.6 V	—	IOH = –4 mA, See Figure 9
output voltage low	—	200 mV	400 mV	IOL = 4 mA, See Figure 9
cmti	—	25 GV/s	50 GV/s	SeeFigure 16, VI = VCCor 0 V
channel count	—	1	—
driver count	—	1	—
receiver count	—	1	—

03 — Alternatives

Closest matches to ISO1050

SN65LBC184 6.8× higher propagation delay, 6.7× higher quiescent current, 4.4× lower output voltage

SN65HVD230 11.5× higher output voltage low, 6.3× higher fall time, 5.6× higher quiescent current

TJA1051 2.2× higher operating temperature, 1.8× lower quiescent current, 1.2× lower input capacitance

TJA1042BT 2.8× higher quiescent current, 2.2× higher operating temperature, 1.2× lower propagation delay

TJA1043 12.0× lower output current, 2.2× higher operating temperature, 1.2× lower propagation delay

MCP2515 5.6× higher quiescent current, 4.0× lower fall time, 4.0× lower rise time

MCP2518FD 8.3× higher quiescent current, 5.0× higher fall time, 5.0× higher rise time

MCP2551 6.6× lower output voltage high, 5.7× lower supply voltage range, 4.0× higher output voltage low

04 — FAQ

Frequently asked questions

What is the channel count of the ISO1050DUBR?

The channel count is 1.

What is the common-mode transient immunity (CMTI) of the ISO1050DUBR?

The CMTI is 25 GV/s as shown in Figure 16 when VI is VCC or 0 V.

What is the data rate of the ISO1050DUBR?

The data rate is 1 bps.

What is the driver count for the ISO1050DUBR?

The driver count is 1.

What is the fall time of the ISO1050DUBR?

The fall time is 20 ns, as shown in Figure 7.

What is the input capacitance of the ISO1050DUBR when TXD is at 3 V and VI = 0.4 sin (4E6πt) + 2.5V?

The input capacitance is 6 pF.

What is the isolation voltage qualification time for the ISO1050DUBR?

The isolation voltage is 2.5 kV at t = 60 sec (qualification).

What is the maximum operating temperature for the ISO1050DUBR?

The maximum operating temperature is 105 °C.