A pair of inverters, a large on after a small one.
Put a signal into the input pin, and observe the output. It should match the polarity.
Signal Generator, oscilloscope
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | |||
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 |
ua | PCB Pin | Internal index | Description |
|---|---|---|---|
| 0 | B4 | 10 | output |
| 1 | B5 | 11 | input |