Skip to main content
Log in
Infineon Technologies CY7C199CNL-15VXC — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C199CNL-15VXC 256Kbit SRAM 15 ns 5 V Infineon Obsolete

MPNCY7C199CNL-15VXC
Obsolete

Infineon Technologies CY7C199CNL-15VXC, 256Kbit asynchronous SRAM organized 32K x 8, 15 ns access time, 4.5–5.5 V supply, 28-SOJ surface-mount package, 0–70°C commercial temperature range.

Infineon Technologies CY7C199CNL-15VXC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C199CNL-15VXC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature0°C~70°C(TA)
PackageTube
TechnologySRAM - Asynchronous
Access time15 ns
Memory size256Kbit
Memory formatSRAM
Case28-BSOJ (0.300\", 7.62mm Width)
Memory organization32K x 8
Write cycle time - word, page15ns

Product details

256Kbit asynchronous SRAM for 5 V legacy buses

The CY7C199CNL-15VXC is a 256Kbit asynchronous SRAM from Infineon (formerly Cypress), organized 32K x 8 with a 15 ns access time and a 4.5–5.5 V supply rail. It is housed in a 28-SOJ surface-mount package and rated for 0–70°C commercial operation. The 15 ns access time and 15 ns write cycle time suit it for byte-wide data buses in legacy 5 V microcontroller or DSP systems where bus timing margin is tight.

Infineon lists the CY7C199CNL-15VXC as Obsolete. For existing BOM lines, procurement should plan for a last-time buy or identify a pin-compatible replacement. We source this part through our independent distribution network. Submit an RFQ for a firm price and lead time.

28-SOJ footprint and supply rail constraints

The 28-SOJ package (0.300-inch body width, 7.62 mm) is a JEDEC-standard SOJ footprint. The commercial temperature range (0–70°C) limits use to indoor, controlled environments. Industrial or extended-temperature applications require a different suffix (e.g., CY7C199CNL-15VXI for -40 to 85°C).

Frequently asked questions

Is CY7C199CNL-15VXC obsolete?

Yes, Infineon lists the CY7C199CNL-15VXC as Obsolete. There is no official replacement from the manufacturer. For production needs, we recommend sourcing through independent distribution or evaluating a pin-compatible 5 V 32K x 8 SRAM in a 28-SOJ package.

What is the replacement for CY7C199CNL-15VXC?

Infineon has not published a direct replacement. A functionally equivalent part would be a 5 V, 32K x 8 asynchronous SRAM with 15 ns or faster access time in a 28-SOJ package. Examples from other vendors include the ISSI IS61C256AH-15JLI or the Alliance Memory AS7C256A-15JCN. Verify pinout and timing compatibility before substituting.