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Infineon Technologies CY7C144E-15AXIT — Memory (DRAM / SRAM / Flash / EEPROM)

Cypress CY7C144E-15AXIT 64Kbit Dual-Port Async SRAM, 15 ns

MPNCY7C144E-15AXIT
Obsolete

Cypress CY7C144E-15AXIT dual-port asynchronous SRAM, 64Kbit (8K x 8), 15 ns access time, 4.5–5.5 V supply, -40 to 85 °C, 64-TQFP (14×14 mm), Tape & Reel.

Infineon Technologies CY7C144E-15AXIT datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C144E-15AXIT specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
TechnologySRAM - Dual Port, Asynchronous
Access time15 ns
Memory size64Kbit
Memory formatSRAM
Case64-LQFP
Memory organization8K x 8
Write cycle time - word, page15ns

Product details

This part is designed for systems that need two independent processors or controllers to share a common memory block without bus contention — think dual-processor video cards, network switch buffers, or any application where one side writes while the other reads, and you need true simultaneous access.

On a typical 8-bit microcontroller or DSP bus running at 33 MHz (30 ns cycle), this part can keep up without wait states. If your processor runs faster than about 66 MHz, you'll need to budget a wait state or look at a faster dual-port SRAM.

Obsolete — sourcing this part today

That means it is no longer manufactured and has no official successor from the original manufacturer. If you are designing a new board, do not plan around this part; look at current dual-port SRAMs from Cypress/Infineon or Renesas in a similar 64-TQFP footprint.

Package and temperature — what the 64-TQFP and -40 to 85 °C mean for your board

Frequently asked questions

What is the replacement for CY7C144E-15AXIT?

Cypress/Infineon does not list a direct pin-compatible replacement for this obsolete part. For new designs, look at current dual-port SRAM families from Cypress/Infineon (e.g., the CY7C026 series) or Renesas in a similar 64-TQFP footprint. For an existing BOM, the only option is surplus sourcing of the exact CY7C144E-15AXIT.

What are the specifications of CY7C144E-15AXIT?

It comes in a 64-TQFP (14x14 mm) package.

Is CY7C144E-15AXIT RoHS compliant?

The 'T' suffix in the order code typically indicates Tape & Reel packaging, and Cypress's standard RoHS compliance applies to this part number. Verify the specific RoHS certificate from the manufacturer or your distributor at quote time.

Can I use CY7C144E-15AXI instead of CY7C144E-15AXIT?

The CY7C144E-15AXI is the same die in a tray/tube package instead of Tape & Reel. Electrically and functionally identical — the only difference is the shipping medium. If your pick-and-place machine feeds from reels, you need the 'T' version; for hand assembly or small runs, the 'I' version works fine.