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Infineon Technologies CY7C1399BN-12ZXC — Memory (DRAM / SRAM / Flash / EEPROM)

CY7C1399BN-12ZXC Infineon 256Kbit Async SRAM, 12 ns

MPNCY7C1399BN-12ZXC
Obsolete

Infineon Technologies CY7C1399BN-12ZXC asynchronous SRAM, 256Kbit, 32K x 8 organization, 12 ns access time, parallel interface, 3V to 3.6V supply, 28-TSSOP, 0°C to 70°C.

Infineon Technologies CY7C1399BN-12ZXC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C1399BN-12ZXC specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Voltage3V ~ 3.6V
Memory interfaceParallel
Operating temperature0°C~70°C(TA)
PackageTray
TechnologySRAM - Asynchronous
Access time12 ns
Memory size256Kbit
Memory formatSRAM
Case28-TSSOP (0.465\", 11.80mm Width)
Memory organization32K x 8
Write cycle time - word, page12ns

Product details

256Kbit asynchronous SRAM — 12 ns access, 32K x 8 organization

The CY7C1399BN-12ZXC is a 256Kbit asynchronous SRAM organized as 32K words by 8 bits, with a 12 ns access time that sets the read-cycle ceiling — the memory controller must complete the address-to-data valid window within this interval, or wait states are required.

Obsolete — no official successor on record

For existing BOM lines, the only sourcing channel is independent distribution — quantities are lot-specific and confirmed at RFQ.

28-TSSOP surface-mount — 0.465-inch body width

The part ships in tray packaging — no tape-and-reel option is listed, so pick-and-place feeders require a tray-to-tape conversion or manual handling for low-volume builds.

The part is not qualified for extended industrial (-40°C to +85°C) or automotive temperature ranges.

Frequently asked questions

Is CY7C1399BN-12ZXC obsolete or end of life?

Yes, Infineon lists the CY7C1399BN-12ZXC as obsolete. No official successor order code has been published. The part is sourced through independent surplus channels; quantities are confirmed at RFQ.

Does CY7C1399BN-12ZXC have a RoHS compliant version?

The evidence does not record a separate RoHS compliance statement for this order code.

What is the replacement for CY7C1399BN-12ZXC?

The part is obsolete and no pin-compatible successor has been published. A parametric substitute with the same 256Kbit density, 12 ns access, 3.3V supply, and 28-TSSOP footprint would need to be evaluated against the specific BOM timing and signal-integrity requirements.