High speed optocoupler
VISHAY
each consists of a GaAlAs infrared emitting diode, optically
coupled with an integrated photo detector and a high speed
transistor. The photo detector is junction isolated from the
transistor to reduce miller capacitance effects. The open
collector output function allows circuit designers to adjust
the load conditions when interfacing with different logic
systems such as TTL, CMOS, etc.
Because the VOM452T and VOM453T have a Faraday
shield on the detector chip, it can also reject and minimize
high input to output common mode transient voltages.
There is no base connection, further reducing the potential
electrical noise entering the package.
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