XNOR gate in PDSO16 — what the package and function mean for the board
The 74AC11810D is a single XNOR gate in the AC logic family, built on a CMOS process and housed in a PDSO16 package. The 16-pin small-outline footprint is the same 1.27 mm pitch as the industry-standard SOIC-16, so the layout matches any existing SOIC-16 pad pattern without a board spin. As an XNOR gate, it outputs a logic-high when both inputs match — the equality-check function used in data comparators, address decoding, and parity validation. The AC family's 2-V to 6-V supply range and typical 8-ns propagation delay keep it compatible with 3.3-V and 5-V logic interfaces running at moderate clock rates.
Active lifecycle and the RoHS non-compliance flag
The RoHS compliance status is marked as non-compliant. This means the device contains lead (Pb) above the 0.1 % threshold — typical for the older AC-logic series where the die-attach or lead-finish used tin-lead solder. For builds that require RoHS exemption 7(c)-I (lead in electronic ceramic parts) or that fall under military/aerospace contracts with a leaded-solder allowance, this part is a direct fit. For RoHS-mandated consumer or automotive production, the buyer must verify the exemption applies or source a lead-free alternative.
No stock-holding claim is made — each order is sourced per the buyer's volume and delivery window.