36 Mbit DDR II+ SRAM at 267 MHz — what the clock rate buys you
The CY7C1423JV18-267BZXCT is a Cypress 36 Mbit DDR II+ Synchronous SRAM organized 2M x 18, clocked at 267 MHz. The DDR II+ architecture delivers back-to-back read/write transactions without dead cycles on the bus, which matters when the memory is feeding a network processor or FPGA packet buffer that cannot stall.
Obsolete — planning the last-time-buy or replacement path
For sustainment programs — medical imaging, telecom line cards, test equipment — that already have this SRAM in the BOM, the procurement path is surplus and broker channels. The 2M x 18 wide-word organization and 267 MHz clock rate narrow the replacement search to other DDR II+ or QDR II+ SRAMs in the same 165-FBGA footprint; expect to requalify timing and supply voltage when cross-referencing.
165-FBGA — layout and rework notes
The 165-ball FBGA (15x17 mm) uses a 1.0 mm ball pitch. The rework lab should pre-bake the parts per J-STD-033 for MSL 3 (typical for this package class) before reflow.