1Kx18 synchronous FIFO with 18 ns access
The SN74ACT7811-18FNR: The 18 ns access means the FIFO can deliver data from a read operation within 18 ns of the clock edge — this sets the timing budget for the downstream logic and the system clock period. For a synchronous interface, the read-enable-to-data-valid window must accommodate this delay plus the setup time of the receiving device.
Active production, RoHS non-compliant
The part is RoHS non-compliant, which means it uses a lead-bearing solder finish (typically SnPb) rather than a lead-free alternative. For BOMs that require RoHS exemption 7(c)-I (lead in electronic components), this part qualifies. For fully RoHS-compliant assemblies, a lead-free equivalent would need a different order code.
Bulk packaging — tray or tube
The SN74ACT7811-18FNR ships in Bulk packaging — typically anti-static tubes or trays, not tape-and-reel. This suits low-to-moderate volume production or prototype runs where reel feeders are not needed.