72 Mbit QDR II+ SRAM at 450 MHz — what it does
The Cypress CY7C1545KV18-450BZC is a 72 Mbit synchronous SRAM built on the QDR II+ architecture, organized as 2M x 36. The 450 MHz clock rate lets the device sustain back-to-back read and write operations without the dead cycles that plague conventional burst SRAM — the QDR II+ bus-turnaround scheme eliminates the idle clock between read and write direction changes. This makes it a fit for high-throughput data buffers in network switches, telecom line cards, and FPGA-based packet processors where every clock cycle of bus bandwidth matters.
Obsolete — sourcing reality
Cypress has marked the CY7C1545KV18-450BZC as obsolete. No direct replacement or successor order code is listed in the official record. For existing BOM lines, procurement must turn to the surplus and broker channel. This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time. If you are freezing a BOM or planning a long production run, securing a last-time-buy or qualifying a pin-compatible alternative from the same QDR II+ family should be on your near-term list.