4.5Mbit synchronous ZBT SRAM — 7.5 ns access, 256K x 18
The Renesas 71V3559S75PFG is a 4.5Mbit synchronous SRAM organized as 256K x 18 bits, using Zero Bus Turnaround (ZBT) technology for back-to-back read/write cycles without dead cycles on the bus. With a 7.5 ns access time and a parallel interface, this part suits high-speed cache, buffer, and look-up table applications where the memory bus must keep up with a fast processor or ASIC without wait states.
Supply rails and temperature grade
Operates from a single 3.3V supply (3.135V to 3.465V), which aligns with standard 3.3V logic families — no separate Vddq rail needed.
100-TQFP package — board-fit for layout
Housed in a 100-lead TQFP (14x14 mm body, 0.5 mm pitch), surface-mount. The fine pitch demands careful fan-out — a 4-layer board with via-in-pad or dogbone breakout is typical for signal integrity. The supplier device package is 100-TQFP (14x14), which matches the standard JEDEC MO-136 footprint; no exotic land pattern required.