NC

ANODE

CATHODE

NC

VCC

VB

VO

GND

HCPL-4701/070A

VO2

VO1

VCC

GND

ANODE 1

CATHODE 1

CATHODE 2

ANODE 2

7

5

6

8

2

3

4

1

TRUTH TABLE

LED

ON

OFF

VO

LOW

HIGH

7

5

6

8

2

3

4

1

HCPL-4731/073A

Features

• Ultra low input current capability - 40

µA

• Specified for 3 V operation

Typical power consumption: <1 mW

Input power: <50

µW

Output power: <500

µW

• TTL and CMOS compatible output

• Specified ac and dc performance over temperature:

0

°C to 70°C

• Safety approval:

UL recognized – 3750 V rms for 1 minute and

5000 V rms* for 1 minute per UL1577

CSA approved

IEC/EN/DIN EN 60747-5-2 approved with

(Option 060) for HCPL-4701

• 8-pin product compatible with 6N138/6N139 and

HCPL-2730/HCPL-2731

• Available in 8-Pin DIP and SOIC-8 footprint

• Through hole and surface mount assembly available

CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to

prevent damage and/or degradation which may be induced by ESD.

Functional Diagram

*5000 V rms/1 Minute rating is for Option 020 (HCPL-4701 and HCPL-4731) products only.

A 0.1

µF bypass capacitor connected between pins 8 and 5 is recommended.

Applications

• Battery operated applications

• ISDN telephone interface

• Ground isolation between logic families – TTL, LSTTL,

CMOS, HCMOS, HL-CMOS, LV-HCMOS

• Low input current line receiver

• EIA RS-232C line receiver

• Telephone ring detector

• AC line voltage status indicator – low input power

dissipation

• Low power systems – ground isolation

• Portable system I/O interface

HCPL-4701/-4731/-070A/-073A

Very Low Power Consumption High Gain Optocouplers

Data Sheet