Data Sheet

©2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD3120 Rev. 1.4 2
FOD3120 — High Noise Immunity, 2.5 A Output Current, Gate Drive Optocoupler
Truth Table
Pin Definitions
LED
V
DD
–V
SS
“Positive Going”
(Turn-on)
V
DD
–V
SS
“Negative Going”
(Turn-off)
V
O
Off 0 V to 30 V0 V to 30 V Low
On 0 V to 11.5 V0 V to 10 V Low
On 11.5 V to 13.5 V10 V to 12 V Transition
On 13.5 V to 30 V12 V to 30 VHigh
Pin # Name Description
1 NC Not Connected
2 Anode LED Anode
3 Cathode LED Cathode
4 NC Not Connected
5V
SS
Negative Supply Voltage
6V
O2
Output Voltage 2 (internally connected to V
O1
)
7V
O1
Output Voltage 1
8V
DD
Positive Supply Voltage