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Infineon Technologies CY7C1041BNV33L-12VXCT — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C1041BNV33L-12VXCT SRAM, 4Mbit, 12 ns, 44-SOJ

MPNCY7C1041BNV33L-12VXCT
Obsolete

Infineon CY7C1041BNV33L-12VXCT, asynchronous SRAM, 4Mbit (256K x 16), 12 ns access time, 3V–3.6V supply, parallel interface, 0°C–70°C, 44-SOJ package.

Infineon Technologies CY7C1041BNV33L-12VXCT datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1041BNV33L-12VXCT specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage3V ~ 3.6V
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTape & Reel (TR)
TechnologySRAM - Asynchronous
Access time12 ns
Memory size4Mbit
Memory formatSRAM
Case44-BSOJ (0.400\", 10.16mm Width)
Memory organization256K x 16
Write cycle time - word, page12ns

Product details

12 ns asynchronous SRAM for fast bus glue

The Infineon CY7C1041BNV33L-12VXCT is a 4 Mbit asynchronous SRAM organized as 256K x 16, with a 12 ns access time that lets it keep up with fast microcontrollers, DSPs, or FPGAs without inserting wait states on a 50–66 MHz bus. The 44-pin SOJ package (0.400" body width) is a common footprint for 256K x 16 SRAMs, making it a candidate for board-level repair or retrofit into existing sockets.

What the 12 ns access time means for your bus

For a 66 MHz bus with a 15 ns clock period, this SRAM leaves about 3 ns of margin after address setup and hold — tight but workable with good PCB layout. If your system runs above 66 MHz or has long trace delays, you may need a pipelined or synchronous SRAM instead.

For those, look for the -12VXI variant (industrial temp, also obsolete) or a current-production industrial-grade part.

Frequently asked questions

What is the replacement for CY7C1041BNV33L-12VXCT?

For a new design, consider a current-production asynchronous SRAM in the same 256K x 16, 44-SOJ footprint, such as parts from the Infineon CY7C1041G series or equivalent from other vendors — but verify pin compatibility, timing, and supply voltage before substituting. For an existing BOM, the industrial-temperature sibling CY7C1041BNV33L-12VXI is pin-compatible but also obsolete.

Is CY7C1041BNV33L-12VXCT compatible with CY7C1041BNV33L-12VXI?

The two parts share the same base product number (CY7C1041), same 4 Mbit density, 256K x 16 organization, 12 ns access time, 3V–3.6V supply, and 44-SOJ package. They are pin-compatible and functionally identical, so the -12VXI can serve as a drop-in replacement if the temperature range fits your application.