8-input NAND gate in a DIP footprint
The SN74S30N is an 8-input NAND gate from Texas Instruments, part of the 74S family of Schottky TTL logic ICs. It implements the logical NAND function across eight inputs, producing a low output only when all inputs are high. Supplied in a Bulk package — typically tubes or trays — this is the standard through-hole DIP format that suits breadboard prototyping, socketed production boards, and rework environments where a soldered or socketed PLCC/SOIC is not preferred.
Where it fits in a logic system
As an 8-input NAND gate, the SN74S30N is used in address decoding, data bus gating, and combinatorial logic trees where a single gate package reduces PCB area compared to cascading smaller gates. The Schottky-clamped inputs provide faster propagation delay than standard 7400-series TTL, making it suitable for higher-speed backplane and memory-select circuits. The series designation (*) is a placeholder in the ledger — no specific family variant (e.g. 'S' for Schottky) is confirmed beyond the part number itself.