si8630 Silicon Laboratories, si8630 Datasheet - Page 21

• Manufacturer Part Number: si8630
• Description: Low-power Triple-channel Digital Isolator
• Manufacturer: Silicon Laboratories

Notes:
1. Enable inputs EN1 and EN2 can be used for multiplexing, for clock sync, or other output control. These inputs are
2. X = not applicable; H = Logic High; L = Logic Low.
3. When using the enable pin (EN) function, the output pin state is driven into a high-impedance state when the EN pin is
Si8630
Si8631
Si8635
P/N
internally pulled-up to local VDD by a 2 µA current source allowing them to be connected to an external logic level (high
or low) or left floating. To minimize noise coupling, do not connect circuit traces to EN1 or EN2 if they are left floating. If
EN1, EN2 are unused, it is recommended they be connected to an external logic level, especially if the Si86xx is
operating in a noisy environment.
disabled (EN = 0).
EN1
—
—
—
H
X
X
L
1,2
EN2
—
H
X
X
H
L
L
1,2
Outputs B1, B2, B3 are enabled and follow input state.
Outputs B1, B2, B3 are disabled and in high impedance state.
Output A3 enabled and follows input state.
Output A3 disabled and in high impedance state.
Outputs B1, B2 are enabled and follow input state.
Outputs B1, B2 are disabled and in high impedance state.
Outputs B1, B2, B3 are enabled and follow input state.
Table 13. Enable Input Truth
Rev. 1.1
Operation
1
3
Si8630/31/35
3
3
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