Description
The HCPL4503M optocoupler consists of an AlGaAs LED optically coupled to a high speed photodetector transistor.
A separate connection for the bias of the photodiode improves the speed by several orders of magnitude over conventional phototransistor optocouplers by reducing the base-collector capacitance of the input transistor. The base of the phototransistor is not bonded out to a pin for improved noise immunity.
An internal noise shield provides superior common mode rejection of 15kV/µs minimum.

FEATUREs
■ VISO = 5kV RMS is standard for all devices
■ High speed – 1MBit/s
■ Superior CMR, CMH = 50kV/ms (typical);
   CML = 30kV/ms (typical)
■ No base connection for improved noise immunity
■ CTR guaranteed 0-70°C
■ U.L. recognized (File # E90700, Vol 2)
■ VDE approval pending

APPLICATIONs
■ Line receivers
■ Pulse transformer replacement
■ Output interface to CMOS-LSTTL-TTL
■ Wide bandwidth analog coupling