Deliver faster communications speeds and higher working voltage in smaller package for industrial and automotive applications

By Alex
Pluemer

Texas
Instruments Inc.

recently launched two new isolated controller area network (CAN) flexible data
rate (FD) transceivers that the company claims feature the highest bus fault
protection, highest common-mode transient immunity (CMTI) and lowest
electromagnetic emissions on the market.

The ISO1042
and the ISO1042-Q1 deliver faster
communication speeds than the classic CAN standard and a higher working voltage
than their competitors in a 35 percent smaller package, helping designers to
better protect low-voltage circuits and increase communication throughput in
hybrid and electric vehicles as well as in industrial applications ranging from
grid infrastructure and motor drives to building automation.

The ISO1042
and ISO1042-Q1 devices provide a working voltage of 1000 Vrms – 18% higher than
the competition – and a withstand voltage of 5000 Vrms, resulting in longer
device lifetimes and enhanced system reliability.  They also feature a high bus fault protection
of ±70 V that provides a 20% higher short-to-DC margin, allowing them to protect
12-V, 24-V and 48-V batter or power-supply systems during high-voltage shorts.

 

The devices’
high electromagnetic immunity – featuring a CMTI of 85 kV/us (minimum) and an
ESD protection of +/- 8 kV according to the International Electrotechnical
Commission (IEC) testing standard – allows developers to design electronic
devices that can reliably operate in noisy conditions. Both transceivers also
provide industry-low electromagnetic compatibility (EMC) emissions – ensuring
system signal integrity – and the ISO1042-Q1 meets the automotive industry
standard (IEC TS62228) for robust EMC.

The ISO1042
and ISO1042-Q1 support CAN speeds of up to 5 Mbits/s with a short loop delay of
215 ns maximum, resulting in faster payload compared to traditional CAN-based
systems. 

Both are
currently available from the TI store and TI’s authorized distributors in a
16-pin, 10.3 x 7.5-mm package or an 8-pin, 5.8 x 7.5-mm SOIC package. Pricing
begins at $1.69 for industrial versions and $1.99 for automotive versions (both
in quantities of 1,000).

TI also
offers evaluation modules for the new transceivers, the ISO1042DWEVM and ISO1042DWVEVM, for $49.00 at the TI store or through
authorized distributors. TI offers additional resources such as
datasheets, application notes, videos and a community forum.