DESCRIPTION

The SFH6318 is ideal for TTL applications since the 300

minimum current transfer ratio with an LED current of

1.6 mA enables operation with one unit load-in and one

unit load-out with a 2.2 k pull-up resistor.

The SFH6319 is best suited for low power logic

applications involving CMOS and low power TTL. A 400

current transfer ratio with only 0.5 mA of LED current is

guaranteed from 0 °C to 70 °C.

Very high current ratio together with 4000 VRMS isolation are

achieved by coupling an LED with an integrated high gain

photo detector in a SOIC-8 package. Separate pins for

the photo diode and output stage enable TTL compatible

saturation voltages with high speed operation.

Photodarlington operation is achieved by tying the VCC and

VO terminals together. Access to the base terminal allows

adjustment to the gain bandwidth.

FEATURES

• High current transfer ratio, 300

• Low input current, 0.5 mA

• High output current, 60 mA

• TTL compatible output, VOL = 0.1 V

• Adjustable bandwidth access to base

• Material categorization: for definitions of

compliance please see www.vishay.com/doc?99912

APPLICATIONS

• Logic ground isolation - TTL / TTL, TTL / CMOS,

CMOS / CMOS, CMOS / TTL

• EIA RS 232C line receiver

• Low input current line receiver long lines, party lines

• Telephone ring detector

• Line voltage status indication - low input power

dissipation

• Low power systems - ground isolation

AGENCY APPROVALS

• UL1577

• cUL

• DIN EN 60747-5-5 (VDE 0884-5) available with option 1

• CSA