Description
The HCPL4503M, 6N135M, 6N136M, HCPL2530M and HCPL2531M optocouplers consist 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 HCPL4503M has no internal connection to the phototransistor base for improved noise immunity.
An internal noise shield provides superior common mode rejection of up to 50,000V/µs.

Features
■ High speed –1 MBit/s
■ Superior CMR – 10kV/µs
■ Dual-Channel HCPL2530M, HCPL2531M (Preliminary)
■ CTR guaranteed 0–70°C
■ U.L. recognized (File # E90700, Vol. 2)
■ VDE recognition (pending)
   – Ordering option ‘V’, e.g., 6N135VM
■ 5,000Vrms (1 minute) isolation rating
■ Superior CMR of 15,000V/µs min. (HCPL4503M)
■ No base connection for improved noise immunity (HCPL4503M)

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