AND GATE
Outputs ON only when ALL inputs are ON. Built by combining two NOT gates into a NOR configuration on the inverted inputs, or by using redstone torches. Essential for requiring multiple conditions to be true simultaneously.
Truth Table
| Input A | Input B | Output |
|---|---|---|
| 0 (OFF) | 0 (OFF) | 0 (OFF) |
| 0 (OFF) | 1 (ON) | 0 (OFF) |
| 1 (ON) | 0 (OFF) | 0 (OFF) |
| 1 (ON) | 1 (ON) | 1 (ON) |
Reading the AND Gate truth table
Count the rows and the AND Gate is quickly summed up: 4 states, 1 on, 3 off.
The only way to light an AND Gate is with A on and B on.
The NAND Gate is the AND Gate with an inverter bolted on. All 4 rows come out the other way round.
Closest to the AND Gate sits the XNOR Gate (Exclusive NOR), which differs on a single row of the table, so a wiring mistake between them is easy to make and easy to miss.
How far the other gates sit from AND Gate
The material cost of one AND Gate
Behind the AND Gate parts list sits 6 crafting ingredients: 3 Redstone and 3 Stick.
Redstone Torch, Redstone Repeater and Redstone Comparator each have their own page here, with the signal behaviour and block values that decide how the AND Gate times out.
| Part used in AND Gate | How many per AND Gate | Crafting cost of a single one |
|---|---|---|
 Redstone Torch | 3 | 1 Redstone, 1 Stick |
 Redstone Repeater | as many as the build needs | 3 Stone, 2 Redstone Torch, 1 Redstone |
 Redstone Comparator | as many as the build needs | 3 Redstone Torch, 3 Stone, 1 Quartz |
The full shopping list for AND Gate
3 Redstone
3 Stick
Prices for AND Gate are read straight off the recipes in Java Edition 26.2.
The AND Gate in short: what it is and what it does
Outputs ON only when ALL inputs are ON. Built by combining two NOT gates into a NOR configuration on the inverted inputs, or by using redstone torches. Essential for requiring multiple conditions to be true simultaneously.
In plain terms, the output is on only when both inputs are on at the same time. AND is the gate of preconditions: it is how a circuit demands that two separate switches, sensors, or states all agree before anything happens, which is why secure doors and safety interlocks lean on it.
No mods and no datapacks are involved: this is the AND Gate exactly as Java Edition 26.2 builds it, down to the tick counts in the table.
Reading the AND Gate: inputs, output and timing
Across its four input combinations the output is on in 1 case, A on with B on, and off in the remaining 3.
Expressed as boolean algebra that is output = A AND B.
A torch-based AND (two inverters into a NOR) adds about 2 redstone ticks because the signal passes through two torch stages.
The 4 rows above are written out as on and off rather than as numbers, because the AND Gate ignores how strong the incoming signal happens to be and only ever asks whether there is any signal there at all.
How to build the AND Gate
- 1Place two input lines (A and B) leading into separate blocks.
- 2Place a redstone torch on top of each input block (these are NOT gates, inverting A and B).
- 3Run both inverted signals into a single block.
- 4Place a redstone torch on the output side of that block (a NOR of the inverted inputs).
- 5The output torch is ON only when both input torches are OFF (both inputs ON).
- 6The AND Gate is only finished when all 4 rows of its table hold true: setting the inputs to ON and ON is the first one to try, and the output should read ON when you do.
Where the AND Gate earns its keep
- ▸AND is the gate of preconditions: it is how a circuit demands that two separate switches, sensors, or states all agree before anything happens, which is why secure doors and safety interlocks lean on it.
- ▸3-torch AND gate (compact, uses 3 torches), a practical build choice for this gate.
- ▸Repeater-based AND (uses two repeaters into one block with torch), a practical build choice for this gate.
- ▸Comparator AND (compare mode, output only if both sides have signal), a practical build choice for this gate.
Tips & common mistakes
- !If the AND Gate reads even one row of its truth table wrong, go looking for two dust lines touching somewhere behind it before you start doubting the logic of the gate itself.
- !Remember the propagation cost: A torch-based AND (two inverters into a NOR) adds about 2 redstone ticks because the signal passes through two torch stages. If you chain several gates, those ticks add up and can desynchronise a fast circuit.
- !Debug from the smallest piece upwards. The AND Gate has only 4 states to check, so proving that it is right takes less than a minute of your time.
Questions people ask about the AND Gate
What does an AND Gate do in Minecraft?
A AND Gate outputs a signal where the output is on only when both inputs are on at the same time. In boolean terms, output = A AND B.
What is the truth table of an AND Gate?
Across its four input combinations the output is on in 1 case, A on with B on, and off in the remaining 3. The boolean expression is output = A AND B.
How do you build an AND Gate with redstone?
Place two input lines (A and B) leading into separate blocks. Place a redstone torch on top of each input block (these are NOT gates, inverting A and B). Common variants include 3-torch AND gate (compact, uses 3 torches) and repeater-based AND (uses two repeaters into one block with torch).
How much delay does an AND Gate add?
A torch-based AND (two inverters into a NOR) adds about 2 redstone ticks because the signal passes through two torch stages. That matters most in clocks and adders where every redstone tick counts.
