The 18 Mbit density and parallel interface target high-throughput buffer applications in networking switches, telecom line cards, and test equipment where back-to-back read-write cycles without bus-turnaround dead cycles matter.
At 250 MHz the QDR II architecture delivers two data words per clock edge on separate read and write ports, effectively doubling throughput without increasing the bus clock. For a 36-bit-wide data path, that is 18 Gbit/s peak bandwidth — enough to feed a high-end FPGA or network processor without stalling. The trade-off is tighter timing closure on the PCB: trace-length matching and controlled impedance become mandatory at this speed.
It is not suited for outdoor base stations, engine bays, or unventilated enclosures where ambient can exceed 70°C.
Supplied in a 165-ball FBGA measuring 13 mm x 15 mm.