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Infineon Technologies CY7C138-25JXI — Memory (DRAM / SRAM / Flash / EEPROM)

Infineon CY7C138-25JXI 32Kbit Dual-Port SRAM, 25 ns

MPNCY7C138-25JXI
Obsolete

Infineon CY7C138-25JXI, 32Kbit (4K x 8) asynchronous dual-port SRAM, 25 ns access time, parallel interface, 4.5V–5.5V supply, -40°C to 85°C, 68-PLCC (J-Lead) package, Tube.

Infineon Technologies CY7C138-25JXI datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C138-25JXI specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature-40°C~85°C(TA)
PackageTube
TechnologySRAM - Dual Port, Asynchronous
Access time25 ns
Memory size32Kbit
Memory formatSRAM
Case68-LCC (J-Lead)
Memory organization4K x 8
Write cycle time - word, page25ns

Product details

The CY7C138-25JXI: The 25 ns access time and 25 ns write cycle time match the bus period.

4K x 8 organization — sizing the buffer

32Kbit total organized as 4K x 8.

68-PLCC J-Lead — footprint and rework

The 68-PLCC package (24.23 mm square) uses J-Leads on all four sides. It is a surface-mount package that can be socketed or soldered. The J-Lead form factor is less tolerant of thermal cycling than gull-wing leads; for high-reliability designs, consider a socket or confirm the board's CTE match. The package is not pin-compatible with 68-pin SOJ or TSOP-II footprints.

Obsolete — sourcing strategy

Infineon lists the CY7C138-25JXI as obsolete.

Frequently asked questions

What is the package type for CY7C138-25JXI?

68-lead PLCC with J-Leads (68-LCC J-Lead, supplier package 68-PLCC 24.23x24.23 mm). Ships in Tube.