The 74LS21 is a dual 4-input AND gate IC in a 14-pin DIP package. It contains two independent AND gates that each output a logic HIGH only when all four inputs are HIGH, useful for multi-condition logic and enable circuits.
Key Features
- Two independent 4-input AND gates
- Output HIGH only when all four inputs are HIGH
- Low-power Schottky TTL logic, 5V operation
- 14-pin DIP package, breadboard friendly
- Good speed and fan-out for TTL designs
- Used in multi-input gating, enable logic and decoders
Order the 74LS21 dual 4-input AND gate from Arduino Corner with cash on delivery and fast nationwide delivery across Pakistan. Stock up on logic ICs for your builds.




