VCC1
(+5 V)
VCC2
(4.5 TO 20 V)
VCC1
(+5 V)
665 Ω
D.U.T.
750 Ω
D.U.T.
VCC
VO
RL
DATA
OUTPUT
VCC
DATA
CMOS
DATA
INPUT
TTL OR
LSTTL
INPUT
TTL OR
LSTTL
VE
GND
TOTEM
POLE
GND
TOTEM
OUTPUT
GATE
VCC2
R L
POLE
OUTPUT
GATE
5 V
1.1 K
1
2
10 V
15 V
20 V
2.37 K
3.83 K
5.11 K
Figure 11. Recommended LED Drive Circuit.
Figure 10. LSTTL to CMOS Interface Circuit.
VCC1
(+5 V)
619 Ω
D.U.T.
VCC
4.02 KΩ
DATA
INPUT
TTL OR
LSTTL
GND
OPEN
COLLECTOR
GATE
Figure 12. Series LED Drive with Open Collector Gate
(4.02 kΩ Resistor Shunts IOH from the LED).
V
CC2
(+5 V)
DATA
OUTPUT
V
CC1
(+5 V)
UP TO 16 LSTTL
LOADS
665 Ω
665 Ω
D.U.T.
OR 4 TTL LOADS
V
CC
0.1
µF
DATA
INPUT
TTL OR
LSTTL
DATA
OUTPUT
DATA
INPUT
TTL OR
LSTTL
TOTEM
POLE
GND
OUTPUT
GATE
1
TOTEM
POLE
OUTPUT
GATE
UP TO 16 LSTTL
LOADS
OR 4 TTL LOADS
1
2
Figure 13. Recommended LSTTL to LSTTL Circuit.
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
