High-performance, quad-channel digital isolator with 8000 VPK isolation
08-06-2015 |
Texas Instruments
|
Power
This post is sponsored by Texas Instruments.
New from Texas Instruments, the ISO7841 is a high-performance, quad-channel
digital isolator with 8000 VPK isolation voltage and reinforced isolation
certifications according to VDE, CSA, and CQC.
The isolator provides high electromagnetic immunity and low emissions at low
power consumption, while isolating CMOS or LVCMOS digital I/Os. Each
isolation channel has a logic input and output buffer separated by silicon
dioxide (SiO2) insulation barrier. This device comes with enable pins which
can be used to put the respective outputs in high impedance for multi-master
driving applications and to reduce power consumption. ISO7841 has three
forward and one reverse-direction channels. In case of input power or signal
loss, default output is 'high'.
Used in conjunction with isolated power supplies, the device prevents noise
currents on a data bus or other circuits from entering the local ground and
interfering with or damaging sensitive circuitry. Through innovative chip
design and layout techniques, electromagnetic compatibility of ISO7841 has
been significantly enhanced to ease system-level ESD, EFT, Surge and
Emissions compliance. ISO7841 is available in 16-pin SOIC wide-body (DW) and
extra-wide body (DWW) packages.