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Infineon Technologies CY7C1381C-100AC — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C1381C-100AC 18Mbit Synchronous SRAM, 100 MHz, 8.5 ns

MPNCY7C1381C-100AC
Obsolete

Infineon (Cypress) CY7C1381C-100AC, 18Mbit Synchronous SRAM, 100 MHz clock, 8.5 ns access time, 512K x 36 organization, Parallel interface, 3.135V–3.6V supply, 0°C–70°C, 100-TQFP (14x20), Tray.

Infineon Technologies CY7C1381C-100AC datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1381C-100AC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage3.135V ~ 3.6V
Clock frequency100 MHz
Memory interfaceParallel
Operating temperature0°C~70°C(TA)
PackageTray
TechnologySRAM - Synchronous, SDR
Access time8.5 ns
Memory size18Mbit
Memory formatSRAM
Case100-LQFP
Memory organization512K x 36

Product details

100 MHz synchronous SRAM — 512K x 36, 8.5 ns access

The CY7C1381C-100AC is a 18Mbit synchronous SRAM organized as 512K words by 36 bits. It runs at a 100 MHz clock frequency with a 8.5 ns access time, making it suitable for high-bandwidth data buffering in networking, telecom, and FPGA-based designs that need a wide, fast local memory. The 36-bit word width is a distinguishing feature — it maps directly to a 36-bit data bus without needing to gang multiple narrower memories.

100-TQFP footprint — board compatibility

This limits the part to indoor, climate-controlled environments — office equipment, telecom central office, test instrumentation, and similar.

Frequently asked questions

What is the replacement for CY7C1381C-100AC?

For a drop-in alternative, look for other 100-pin TQFP synchronous SRAMs with 512K x 36 organization and a 100 MHz clock — but verify the pinout and timing compatibility against the original datasheet before substituting. The surplus channel is the primary source for this exact part.