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Si8641BB-B-IS1 Datasheet(PDF) 7 Page - Silicon Laboratories |
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Si8641BB-B-IS1 Datasheet(HTML) 7 Page - Silicon Laboratories |
7 / 42 page Table 3.2. Enable Input Truth Part Number EN11, 2 EN21, 2 Operation Si8640 — H Outputs B1, B2, B3, B4 are enabled and follow the input state. — L Outputs B1, B2, B3, B4 are disabled and in high impedance state.3 Si8641 H X Output A4 enabled and follows the input state. L X Output A4 disabled and in high impedance state.3 X H Outputs B1, B2, B3 are enabled and follow the input state. X L Outputs B1, B2, B3 are disabled and in high impedance state.3 Si8642 H X Outputs A3 and A4 are enabled and follow the input state. L X Outputs A3 and A4 are disabled and in high impedance state.3 X H Outputs B1 and B2 are enabled and follow the input state. X L Outputs B1 and B2 are disabled and in high impedance state.3 Si8645 — — Outputs B1, B2, B3, B4 are enabled and follow the input state. Note: 1. Enable inputs EN1 and EN2 can be used for multiplexing, for clock sync, or other output control. EN1, EN2 logic operation is summarized for each isolator product in Table 2. These inputs are internally pulled-up to local VDD allowing them to be connec- ted 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. 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 disabled (EN = 0). Si864x Data Sheet Device Operation silabs.com | Smart. Connected. Energy-friendly. Rev. 2.0 | 6 |
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