Description

These Broadcom® devices are very low power consumption, high-gain, single- and dual-channel optocouplers. The HCPL-4701 represents the single-channel, 8-pin DIP configuration and is pin compatible with the industry-standard 6N139. The HCPL-4731 represents the dual-channel 8-pin DIP configuration and is pin compatible with the popular standard HCPL-2731. The HCPL-070A and HCPL-073A are the equivalent single- and dual-channel products in an SO-8 footprint. Each channel can be driven with an input current as low as 40 μA and has a typical current transfer ratio of 3500%.

These high-gain couplers use an AlGaAs LED and an integrated high-gain photodetector to provide an extremely high current transfer ratio between input and output. Separate pins for the photodiode and output stage results in TTL compatible saturation voltages and high-speed operation. Where desired, the VCC and VO terminals can be tied together to achieve conventional Darlington operation (single-channel package only).

These devices are designed for use in CMOS, LSTTL, or other low power applications. They are especially well suited for ISDN telephone interface and battery-operated applications due to the low power consumption. A 700% minimum current transfer ratio is guaranteed from 0°C to 70°C operating temperature range at 40 μA of LED current and VCC ≥ 3V.

The SO-8 does not require through holes in a PCB. This package occupies approximately one-third the footprint area of the standard dual-in-line package. The lead profile is designed to be compatible with standard surface-mount processes.

Features

 Ultra low input current capability: 40 μA

 Specified for 3V operation

– Typical power consumption: <1 mW

– Input power: <50 μW

– Output power: <500 μW

 Will operate with VCC as low as 1.6V

 High current transfer ratio: 3500% at IF = 40 μA

 TTL and CMOS compatible output

 Specified ac and dc performance over temperature:

0°C to 70°C

 Safety approval

– UL recognized: 3750 Vrms for 1 minute and 5000 Vrms

for 1 minute per UL1577

– CSA approved

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

VIORM = 630V peak

(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

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