Synchronous SRAM for high-speed cache and buffer applications
The Cypress CYD01S18V-167BBC is a 1 Mbit synchronous SRAM organized as 64K×18 bits, clocked at 167 MHz with a 4 ns access time. It runs from a 1.7 V supply and communicates over a parallel interface. This part is built for high-bandwidth data buffering in networking, telecom, and test equipment where deterministic read/write latency matters — think packet buffers, FIFO replacement, or L2 cache in FPGA-based designs. The 256FBGA package keeps signal paths short, but that ball grid footprint means rework requires a preheater and controlled reflow profile; hand-soldering is not practical.
Lifecycle and sourcing posture
The CYD01S18V-167BBC carries an EOL-hot lifecycle status. That means Cypress has issued an end-of-life notice, and the last-time-buy window may already be closed or closing. For new production, the closest functional alternative with the same 4 ns access and 167 MHz clock is the CYD18S18V18-167BBAXC — but verify pin compatibility before swapping, as the density difference (18 Mbit vs 1 Mbit) changes the footprint. For existing BOM lines, source this part through independent distribution; we can quote against an RFQ and confirm current availability and pricing at quote time. No compliance documentation beyond standard RoHS is on record for this specific order code.