logic gate
implementation
74AHC1G125 = SINGLE BUFFER GATE WITH 3-STATE OUTPUT
The 74AHC1G125 is a single non-inverting buffer/bus driver with a 3-state output. The output enters a high impedance state when a HIGH-level is applied to the output enable (OE) pin. The device is designed for operation with a power supply range of 2.0V to 5.5V.
https://www.diodes.com/assets/Datasheets/74AHC1G125.pdf
| OE | A | Y |
|---|---|---|
| L | H | H |
| L | L | L |
| H | X | Z |
The output enters a high impedance state when a HIGH-level is applied to the output enable (OE) pin.
NAND
NC7SZ00
The NC7SZ00 is a single two−input NAND gate from onsemi’s Ultra−High Speed (UHS) series of TinyLogic.
AND
SN74AHC1G08
SN74AHC1G08 Single 2-Input Positive-AND Gate
The SN74AHC1G08 device is a single 2-input positive-AND gate. The device performs the Boolean function
Y = A ● B
or Y = A + B
in positive logic.
| A | B | Y |
|---|---|---|
| H | H | H |
| L | X | L |
| X | L | L |
| Input A | Input B | Output |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
| Term | Meaning |
|---|---|
| AND gate | Basic logic gate: output is 1 only if both inputs are 1 |
| Positive-AND gate | Same thing — "positive" means using standard logic levels (high = 1) |
| Negative logic | Less common, where high voltage = logic 0 |