Datasheet

ADM1085/ADM1086/ADM1087/ADM1088
Rev. A | Page 10 of 16
OPEN-DRAIN AND PUSH-PULL OUTPUTS
The ADM1085 and ADM1087 have open-drain output stages
that require an external pull-up resistor to provide a logic high
voltage level. The geometry of the NMOS transistor enables the
output to be pulled up to voltage levels as high as 22 V.
ADM1085/ADM1087
LOGIC
V
CC
(≤22V)
04591-026
Figure 21. Open-Drain Output Stage
The ADM1086 and ADM1088 have push-pull (CMOS) output
stages that require no external components to drive other logic
circuits. An internal PMOS pull-up transistor provides the logic
high voltage level.
ADM1086/ADM1088
V
CC
LOGIC
04591-027
Figure 22. Push-Pull Output Stage