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www.fairchildsemi.com

HCPL0700, HCPL0701, HCPL0730, HCPL0731 Rev. 1.0.1

April 2009

HCPL0700, HCPL0701, HCPL0730, HCPL0731

Low Input Current High Gain Split Darlington Optocouplers

Single Channel: HCPL0700, HCPL0701, Dual Channel: HCPL0730, HCPL0731

Features

■ Low input current: 0.5mA

■ Superior CTR: 2000%

■ Superior CMR – 10 kV/µs

■ CTR guaranteed 0°C to 70°C

■ U.L. Recognized (file# E90700)

■ VDE 0884 recognized (file# 136616)

– approval pending for HCPL0730/0731

■ BSI recognized (file# 8661, 8662)

– HCPL0700/0701 only

Applications

■ Digital logic ground isolation

■ Telephone ring detector

■ EIA-RS-232C line receiver

■ High common mode noise line receiver

■ µP bus isolation

■ Current loop receiver

Description

The HCPL0700, HCPL0701, HCPL0730 and HCPL0731

optocouplers consist of an AlGaAs LED optically coupled

to a high gain split darlington photodetector housed in a

compact 8-pin small outline package. The HCPL0730

and HCPL0731 devices have two channels per package

for optimum mounting density.

The split darlington configuration separating the input

photodiode and the first stage gain from the output tran-

sistor permits lower output saturation voltage and higher

speed operation than possible with conventional darling-

ton phototransistor optocoupler.

The combination of a very low input current of 0.5mA

and a high current transfer ratio of 2000% makes this

family particularly useful for input interface to MOS,

CMOS, LSTTL and EIA RS232C, while output compati-

bility is ensured to CMOS as well as high fan-out TTL

requirements.

Schematics

1

2

3

4

5

6

7

8

+

_

V

F

V

CC

V

B

V

O

GND

HCPL0700 / HCPL0701

N/C

N/C

1

2

3

4

5

6

7

8

+

_

V

F1

V

CC

V

01

V

02

GND

HCPL0730 / HCPL0731

V

F2

_

+

Truth Table

LED

VO

ON

LOW

OFF

HIGH