F7421PC

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Dual 4-input NAND gate digital logic IC utilizing standard Fairchild bipolar architecture with a high-reliability logic buffer layout. | 14-Pin DIP | Mid-century aerospace instrume ntation racks, early computerized process hubs, industrial sequencing units. | F7421PC | NTE7421 | SK7421 | 7421, SN7421N, DM7421N, MC7421N | Dual-Channel Interlock Logic: Wired across four separate sensor switch pairs to create a hardware safety interlock system that only outputs a "run" signal if all criteria are satisfied. Show more