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Renesas Electronics 71V3558S133PFG — Discrete Semiconductors

71V3558S133PFG SRAM 4.5Mbit 133 MHz 4.2 ns 100-TQFP

MPN71V3558S133PFG
End of Life

Renesas 71V3558S133PFG, synchronous ZBT SRAM, 4.5 Mbit, 256K x 18, 133 MHz clock, 4.2 ns access time, 3.3 V supply, 0°C to 70°C, 100-TQFP (14x14), surface mount.

$4.11Ref. price · indicative, final on quote
Renesas Electronics 71V3558S133PFG datasheet (PDF)
Packaging100-LQFP
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

71V3558S133PFG specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage3.135V ~ 3.465V
Clock frequency133 MHz
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageBulk
TechnologySRAM - Synchronous, SDR (ZBT)
Access time4.2 ns
Memory size4.5Mbit
Memory formatSRAM
Case100-LQFP
Memory organization256K x 18

Product details

Synchronous ZBT SRAM for high-speed cache and buffer applications

The Renesas 71V3558S133PFG is a 4.5 Mbit synchronous SRAM organized 256K x 18, built on Zero Bus Turnaround (ZBT) architecture. It clocks at 133 MHz with a 4.2 ns access time.

Temperature grade and supply — commercial indoor fit

It belongs in office networking gear, telecom indoor shelves, test equipment, and similar climate-controlled environments.

There is no last-time-buy window, no NRND flag. For a BOM freeze, this part is safe to specify into production. No minimum volume commitment required to get a firm number.

Frequently asked questions

Is 71V3558S133PFG obsolete or nearing end-of-life?

No. The lifecycle status is Active. There is no end-of-life notice, no last-time-buy window. It is safe for new designs and production BOMs.

What is the access time of 71V3558S133PFG?

The access time is 4.2 ns. Combined with the 133 MHz clock, that gives roughly half a cycle of margin for bus timing closure.

Can 71V3558S133PFG replace 71V3558S166PFG or similar?

The 71V3558S166PFG runs at 166 MHz with a faster access time. The 133 MHz variant is a lower-speed-grade sibling in the same package and pinout. If your controller can tolerate the slower clock and access time, the 133PFG is a drop-in replacement. Verify timing closure on your bus before swapping.

What is the equivalent part for 71V3558S133PFG if out of stock?

The closest pin-compatible alternative is the 71V3558S166PFG (166 MHz, same 100-TQFP footprint). Other vendors' 256K x 18 ZBT SRAMs in 100-TQFP may also fit, but pinout and timing parameters must be verified against the Renesas datasheet.