SI871X Datasheet, PDF (15/35 Pages) Silicon Laboratories – Industrial automation

Si871x/2x
3. Technical Description
3.1. Device Behavior
Truth tables for the Si871x/2x are summarized in Table 10.
Table 10. Si871x/2x Truth Table Summary*
Input
Enable
Output
Si8715 (Non-inverting)
OFF
N/A
LOW
ON
N/A
HIGH
Si8716 (Inverting)
OFF
HIGH
HIGH
ON
HIGH
LOW
X
LOW
HIGH
Si8717 (Non-inverting)
OFF
HIGH
LOW
ON
HIGH
HIGH
X
LOW
HI-Z
Si8718 (Inverting)
OFF
HIGH
HIGH
ON
HIGH
LOW
X
LOW
HI-Z
Si8719 (Inverting)
OFF
N/A
HIGH
ON
N/A
LOW
Si8720 (Inverting)
OFF
HIGH
HIGH
ON
HIGH
LOW
X
LOW
LOW
*Note: This truth table assumes VDD is powered (VDD> UVLO). If VDD is below UVLO, see
"3.3.Under Voltage Lockout (UVLO)" on page 16 for more information. When VDD <
UVLO, the output state is not guaranteed. In this condition, the output level is determined
by external circuity connected to the output.
Rev. 1.0
15