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COMPARISON BULLETIN |
NVE Isolated
CAN Transceivers Beat NXP on Size, Transient Immunity, EMI, and More
NXP might claim to have an isolated transceiver as good as the NVE IL41050TA,
but don’t be fooled. Key differences are summarized below:
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Min.
Transient
Immunity |
Emmissions |
Isolation
Resistance |
Boot-up
Time |
Estimated
Life |
Available
Packages |
NVE
IL41050TA |
30 kV/µs |
Undetectable |
1014
ohms |
Instant |
44000 yrs |
• True8™
(8 mm creepage per IEC 60601)
• JEDEC-std. narrow-body SOIC |
NXP
TJA1052i |
20 kV/µs |
Modulated
RF carrier |
1011
ohms |
500 µs |
Not
specified |
•
Wide SOIC (<8 mm creepage)
• No narrow-body packages |
Better Transient Immunity
NVE’s minimum transient immunity of 30 kV/µs is 50% better than
NXP for more reliable operation in harsh environments.
Better EMC Footprint
With no carriers or clocks, NVE isolators have orders of magnitude lower emissions.
NXP uses RF coupling, i.e., little radio transmitters producing modulated
RF carrier emissions. In addition to low emissions, NVE’s unique spintronic
technology has unsurpassed EMI immunity.
Barrier a Thousand Times Better
A unique ceramic/polymer barrier gives NVE a isolation resistance of 1014
ohms, 1000 times better than NXP. NVE’s better barrier means a remarkable
44000 year life. NXP uses an oxide barrier, which will be subject to diffusion
and premature failure, and the isolation resistance decreases sharply with temperature.
NXP doesn’t even specify a barrier life, and doesn’t have much experience
with isolation. NVE introduced the first non-optical isolators in 2000, and has
been a leader ever since.
Better Creepage
The unique NVE True 8 wide-body package guarantees 8 mm minimum creepage
as defined under IEC 60601 rules, which is required for 250 working volts. Whatever
isolation voltage they claim, NXP admitts it does not meet the standard after
subtracting a conductive part as required, and therefore it does not meet IEC
requirements for 250 working volts.
Smaller
In addition to a True 8 wide-body, NVE offers a narrow-body version for half
the PCA footprint.
Award-winning IsoLoop Isolators. The first. The still the best.
IL41050TA Datasheet (.pdf) >
Questions or Comments >
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