IC 74LS30 8-Input Positive-NAND
Product information:
The 74LS30 is a TTL (Transistor-Transistor Logic) IC, which functions as an 8-input NAND gate. This IC has eight individual inputs and a common output, which goes low when all inputs are high. It is a highly reliable and versatile logic circuit that can be used in various digital applications, such as memory circuits, signal processing, counters and timers.
If inputs A through H are all high then output Y becomes low.