The DM74LS40 by National Semiconductor is a Dual 4-Input NAND Buffer. Below is the official datasheet preview.
| Part number | DM74LS40 |
|---|---|
| Manufacturer | National Semiconductor |
| File Size | 93.51 KB |
| Description | Dual 4-Input NAND Buffer |
| Datasheet |
 DM74LS40_NationalSemiconductor.pdf
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This device contains two independent gates each of which perform the logic NAND function Connection Diagrams Dual-In-Line Package TL F 10171 1 Order Number DM74LS40M or DM74LS40N See NS Package Number M14A or N14A Function Table (Each Gate) Inputs A H L X X X B H X L X X C H X X L X D H X X X L Outputs Y L H H H H Logic Diagram (Each Gate) TL F 10171 2 Positive Logic Y e A B C D or Y e A a B a C a D C1995 National Semiconductor Corporation TL F 10171 RRD-B30M1
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