1-535

GND

VCC

HCPL-5400

464

Ω

VCC1 = +5 V

TTL

LSTTL

STTL

OPEN

COLLECTOR

OUTPUT

GATE

(e.g. 54S05)

DATA

OUT

2

DATA

IN

1

GND 2

Y

0.1 µF

A

GND 1

Y = A

VCC2 = 5 V

STTL

Figure 14. Alternative HCPL-5400 Interface Circuit.

Figure 15. Recommended HCPL-5430 and HCPL-6430 Interface Circuit.

Figure 16. Alternative HCPL-5430 and HCPL-6430 Interface Circuit.

GND

VCC

HCPL-5430

464

Ω

VCC1 = +5 V

TTL

LSTTL

HCMOS

STTL

STTL OPEN COLLECTOR

OUTPUT GATE

(e.g. 54AS05)

DATA

OUT Y

DATA

IN A

GND 2

0.1 µF

GND 1

Y = A

VCC2 = +5 V

TTL

LSTTL

HCMOS

STTL

DATA

OUT Y

DATA

IN A

464

Ω

1

2

2

GND

VCC

HCPL-5430

226

Ω

VCC1 = 5 V

TOTEM POLE

OUTPUT GATE

(e.g. 54AS1000)

DATA

OUT Y

DATA

IN A

1

GND 2

0.1 µF

30 pF

GND 1

Y = A

VCC2 = +5 V

TTL

LSTTL

STTL

HCMOS

DATA

OUT Y

226

Ω

30 pF

274

Ω

274

Ω

DATA

IN A

TTL

LSTTL

STTL

HCMOS