V
= +5 V
CC1
HCPL-5400
V
= 5 V
CC2
464 Ω
V
CC
DATA
IN
0.1 µF
TTL
STTL
A
DATA
OUT
LSTTL
STTL
Y
GND 1
GND
OPEN
COLLECTOR
OUTPUT
GND 2
Y = A
1
GATE
(e.g. 54S05)
2
Figure 14. Alternative HCPL-5400 Interface Circuit.
30 pF
226 Ω
V
= 5 V
CC1
HCPL-5430
V
V
= +5 V
CC2
CC
DATA
IN A
TTL
274 Ω
274 Ω
0.1 µF
LSTTL
STTL
DATA
OUT Y
HCMOS
TOTEM POLE
OUTPUT GATE
(e.g. 54AS1000)
TTL
LSTTL
STTL
DATA
OUT Y
HCMOS
DATA
IN A
GND
Y = A
GND 2
GND 1
226 Ω
30 pF
2
1
Figure 15. Recommended HCPL-5430 and HCPL-6430 Interface Circuit.
464 Ω
V
= +5 V
CC1
HCPL-5430
DATA
IN A
V
V
= +5 V
CC
CC2
TTL
0.1 µF
LSTTL
HCMOS
STTL
DATA
OUT Y
STTL OPEN COLLECTOR
OUTPUT GATE
464 Ω
TTL
LSTTL
HCMOS
STTL
DATA
OUT Y
(e.g. 54AS05)
DATA
IN A
GND
Y = A
GND 2
GND 1
2
1
Figure 16. Alternative HCPL-5430 and HCPL-6430 Interface Circuit.
1-535
HP [ HEWLETT-PACKARD ]
