450 MHz QDR II+ SRAM for high-throughput buffers
It operates at a clock frequency of 450 MHz, making it suitable for high-bandwidth data buffering in networking switches, telecom line cards, and test equipment where back-to-back read/write throughput matters.
At 450 MHz, the QDR II+ interface delivers four data words per clock cycle (two on the rising edge, two on the falling), giving an effective data rate of 1.8 Gbps per pin. For a 36-bit-wide bus, that translates to roughly 64.8 Gbit/s raw bandwidth — enough to keep a high-port-count switch fabric or a packet processor's lookup engine fed without adding pipeline stalls. The trade-off is tight signal-integrity requirements on the PCB: the 450 MHz clock needs controlled-impedance traces and matched-length routing between the SRAM and the controller.
The ROHS3 compliance also keeps it usable for designs shipping into RoHS-regulated markets without a waiver.
The 165-ball FBGA (13x15 mm) is a fine-pitch BGA. The 1.0 mm ball pitch is manageable with standard SMT assembly, but the part requires X-ray inspection after reflow to verify solder-joint integrity. The package is surface-mount only. No exposed thermal pad — heat dissipation relies on the BGA balls and the PCB copper plane beneath the device. For a 450 MHz part, place decoupling capacitors within 2 mm of the supply balls to keep the PDN impedance low.