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Infineon Technologies CY7C109B-15VXCT — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C109B-15VXCT Infineon 1Mbit SRAM, 15 ns, 32-SOJ

MPNCY7C109B-15VXCT
Obsolete

Infineon CY7C109B-15VXCT asynchronous SRAM, 1Mbit (128K x 8), 15 ns access time, parallel interface, 4.5V–5.5V supply, 0°C–70°C, 32-SOJ package, Tape & Reel.

Infineon Technologies CY7C109B-15VXCT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C109B-15VXCT specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature0°C~70°C(TA)
PackageTape & Reel (TR)
TechnologySRAM - Asynchronous
Access time15 ns
Memory size1Mbit
Memory formatSRAM
Case32-BSOJ (0.400\", 10.16mm Width)
Memory organization128K x 8
Write cycle time - word, page15ns

Product details

The CY7C109B-15VXCT: No stock-holding claim is made here.

Memory fit for legacy 5V asynchronous sockets

Organized as 128K x 8 with a 15 ns access time, this is a standard asynchronous SRAM that drops into any 5V-tolerant parallel bus requiring a 1 Mbit deep, 8-bit wide data path — common in older embedded controllers, telecom line cards, and industrial PLC memory maps. The 4.5V–5.5V supply range confirms it operates on a legacy 5V rail without a level translator, but the 0°C–70°C commercial temperature grade limits it to indoor, climate-controlled environments — not suitable for outdoor or under-hood deployment.

A board spin is required to migrate to a different package.

Frequently asked questions

What is the replacement for CY7C109B-15VXCT?

Infineon does not list a direct replacement for this part. Any functional replacement would require a different package and pinout — a board redesign is necessary.

Can CY7C109B-15VXCT be used in a 5V system?

Yes, the supply range is 4.5V–5.5V, so it operates directly on a 5V rail without external level translation.