Device identity and logic function
The SN74LS51NS is a dual AND-OR-INVERT gate from the 74LS family, packaged in a 14-pin SO (14SO) body. It implements the logic function (A·B)+(C·D) inverted on each of two independent gates, a standard building block for combinational logic in TTL systems.
Package and supply format
Supplied in Bulk format, the 14SO package is a surface-mount small-outline footprint compatible with standard 0.050-inch pitch soldering profiles. The Bulk quantity suits prototype builds and small-run production without reel minimums.
Listed as Active in production status, the SN74LS51NS remains a current catalog item.