HCPL-4502 PDF Datasheet – Optocoupler, Transistor, 8 Pin

Part Number: HCPL-4502

Function: High Speed Transistor, Optocoupler

Package: DIP 8 Pin Type

Manufacturer: QT Optoelectronics,  Fairchild Semiconductor


1 page
HCPL-4502 pdf pinout


The HCPL-4502, HCPL-2503, 6N135, 6N136 and HCPL-2530, HCPL-2531 optocouplers consist of an AlGaAs LED optically coupled to a high speed photodetector transistor.

A photocoupler, also known as an optocoupler or an optical isolator, is an electronic component that provides electrical isolation between two circuits while allowing them to communicate with each other optically. It typically consists of an LED and a photodetector, such as a photodiode or a phototransistor, housed in a single package.

The LED transmits an optical signal to the photodetector, which converts it into an electrical signal that can be used to trigger or switch another circuit.

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.

An internal noise shield provides superior common mode rejection of 10kV/µs. An improved package allows superior insulation permitting a 480 V working voltage compared to industry standard 0f 220 V.


1. High speed-1 MBit/s

2. Superior CMR-10 kV/µs

3. Double working voltage-480V RMS

4. CTR guaranteed 0-70°C


HCPL-4502 datasheet



1. Line receivers

2. Pulse transformer replacement

3. Output interface to CMOS-LSTTL-TTL

4. Wide bandwidth analog coupling

HCPL-4502 PDF Datasheet

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