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Infineon Technologies CY7C1049B-15VXC — Memory (DRAM / SRAM / Flash / EEPROM)

Cypress CY7C1049B-15VXC SRAM, 4Mbit, 15ns, 36-SOJ

MPNCY7C1049B-15VXC
Obsolete

Cypress CY7C1049B-15VXC, 4Mbit Asynchronous SRAM, 512K x 8 Organization, 15ns Access Time, 4.5V–5.5V Supply, 36-SOJ Surface Mount, 0°C–70°C, Tube.

$3.3998Ref. price · indicative, final on quote
Infineon Technologies CY7C1049B-15VXC datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1049B-15VXC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTube
TechnologySRAM - Asynchronous
Access time15 ns
Memory size4Mbit
Memory formatSRAM
Case36-BSOJ (0.400\", 10.16mm Width)
Memory organization512K x 8
Write cycle time - word, page15ns

Product details

The CY7C1049B-15VXC is a 4 Mbit asynchronous SRAM organized as 512K x 8 bits, with a 15 ns access time and a parallel interface. It operates from a 4.5 V to 5.5 V supply and is housed in a 36-SOJ surface-mount package.

Write cycle time is also 15 ns.

The CY7C1049B-15VXC is obsolete per the manufacturer's lifecycle status. No last-time-buy window remains open through Cypress (now Infineon).

The 36-SOJ (Small Outline J-Lead) package has a 0.400-inch body width and a 10.16 mm width. It is a surface-mount footprint that was common in late-1990s through 2010s telecom and networking line cards.

Frequently asked questions

What is the replacement for CY7C1049B-15VXC?

Cypress/Infineon has not published a direct pin-compatible replacement for the CY7C1049B-15VXC in the 36-SOJ package at 5 V with 15 ns access time. For a BOM revision, evaluate the CY7C1049B series in a different package or a 3.3 V alternative with level translation.

What is the access time of CY7C1049B-15VXC?

The access time is 15 ns, which applies to both read and write cycles (write cycle time is also 15 ns).

Can CY7C1049B-15VXC operate at 5V?

Yes, the supply range is 4.5 V to 5.5 V, so 5 V nominal is within spec.