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Infineon Technologies CY7C109BN-20ZXCT — Memory (DRAM / SRAM / Flash / EEPROM)

Cypress CY7C109BN-20ZXCT 1Mbit Async SRAM, 20 ns, 32-TSOP I

MPNCY7C109BN-20ZXCT
Obsolete

Cypress CY7C109BN-20ZXCT, 1Mbit asynchronous SRAM, 128Kx8 parallel, 4.5-5.5V supply, 20 ns access time, 32-TSOP I surface-mount package, commercial 0-70 °C.

Infineon Technologies CY7C109BN-20ZXCT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

CY7C109BN-20ZXCT specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Memory interfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTape & Reel (TR)
TechnologySRAM - Asynchronous
Access time20 ns
Memory size1Mbit
Memory formatSRAM
Case32-TFSOP (0.724\", 18.40mm Width)
Memory organization128K x 8
Write cycle time - word, page20ns

Product details

The CY7C109BN-20ZXCT is a 1Mbit asynchronous SRAM from Cypress, organized as 128K x 8 bits, with a 20 ns access time.

Package and footprint — 32-TSOP I

The part comes in a 32-TFSOP (0.724", 18.40mm width) surface-mount package, also designated as 32-TSOP I by Cypress. The 8 mm body width and 0.5 mm pin pitch are standard for this density class. The supplier device package is 32-TSOP I.

That limits deployment to indoor, temperature-controlled environments — office equipment, test instrumentation, and telecom central-office gear.

Lifecycle — obsolete, sourced through independent channels

Cypress lists the CY7C109BN-20ZXCT as obsolete. For BOM lines that still require this exact order code, procurement must go through surplus or broker distribution.

Frequently asked questions

Is CY7C109BN-20ZXCT obsolete and what is its direct replacement?

Yes, the CY7C109BN-20ZXCT is obsolete per Cypress. No official direct replacement order code is provided in the record. For a pin-compatible alternative, consider other 128K x 8 asynchronous SRAMs in 32-TSOP I from vendors like ISSI or Alliance — verify the 20 ns speed grade and 4.5-5.5V supply compatibility against your specific timing and voltage requirements.