Table 8-1 and Table 8-2 list the functional modes for the ISO72x family of devices.
Table 8-1 ISO721 Functional Table
VCC1 |
VCC2 |
INPUT (IN) |
OUTPUT
(OUT) |
PU | PU | H | H |
L | L |
Open | H |
PD | PU | X | H |
X | PD | X | Undetermined |
Table 8-2 ISO722 Functional Table
VCC1 |
VCC2 |
INPUT (IN) |
OUTPUT ENABLE ( EN) |
OUTPUT
(OUT) |
PU | PU | H | L or open | H |
L | L or open | L |
X | H | Z |
Open | L or open | H |
PD | PU | X | L or open | H |
PD | PU | X | H | Z |
X | PD | X | X | Undetermined |