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Infineon Technologies CY7C1049BNL-17VC — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C1049BNL-17VC Infineon SRAM, 4Mbit 512Kx8 17ns 36-SOJ

MPNCY7C1049BNL-17VC
Obsolete

Infineon CY7C1049BNL-17VC, 4Mbit (512K x 8) asynchronous SRAM, 17 ns access time, parallel interface, 4.5V-5.5V supply, 0°C-70°C, 36-SOJ package.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1049BNL-17VC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageBag
TechnologySRAM - Asynchronous
Access time17 ns
Memory size4Mbit
Memory formatSRAM
Case36-BSOJ (0.400\", 10.16mm Width)
Memory organization512K x 8
Write cycle time - word, page17ns

Product details

5 V asynchronous SRAM in a 36-SOJ footprint

The device is housed in a 36-SOJ (BSOJ) surface-mount package, a footprint common in late-1990s to mid-2000s embedded systems, telecom line cards, and test equipment that required fast, byte-wide scratchpad memory on a 5 V rail.

Buyers should verify date code freshness and inspect for moisture sensitivity (MSL) before reflow, as inventory may carry extended shelf age.

17 ns access time — timing budget for legacy buses

The 17 ns access time defines the window from address assertion to valid data on the outputs. For a 5 V system running a 33 MHz to 50 MHz bus, this rating provides roughly one to two clock cycles of margin, depending on the memory controller's setup/hold requirements. If your design originally used a slower SRAM (e.g., 25 ns or 20 ns), this part will meet timing; if you are migrating to a faster controller, verify that the 17 ns window does not violate the minimum address-hold time.

Package and supply rail considerations

The 36-SOJ package (body width 10.16 mm, 0.400 inch) is a JEDEC-standard SOJ footprint. It is surface-mount but not a fine-pitch BGA, so rework with a hot-air station is feasible.

Frequently asked questions

What is the replacement for CY7C1049BNL-17VC?

Infineon has not published an official successor for the CY7C1049BNL-17VC. For a pin-compatible alternative, look for other 4 Mbit asynchronous SRAMs in a 36-SOJ package with a 5 V supply and 17 ns or faster access time, such as the CY7C1049B series variants (e.g., CY7C1049BNL-15VC, 15 ns). Verify the exact footprint and timing before substituting.