Infineon CY7C109B-15VC, 1Mbit asynchronous SRAM, 128K x 8 organization, 15 ns access time, 4.5V–5.5V supply, 32-SOJ surface-mount package, tube.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Memory interface | Parallel |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tube |
| Technology | SRAM - Asynchronous |
| Access time | 15 ns |
| Memory size | 1Mbit |
| Memory format | SRAM |
| Case | 32-BSOJ (0.400\", 10.16mm Width) |
| Memory organization | 128K x 8 |
| Write cycle time - word, page | 15ns |
The CY7C109B-15VC is a 1Mbit asynchronous SRAM organized as 128K x 8 bits, with a 15 ns access time and a parallel interface. It operates from a 4.5V to 5.5V supply, placing it in legacy 5V logic systems — not a 3.3V drop-in. The 32-SOJ package (0.400-inch body width) is a surface-mount footprint common in late-1990s through mid-2000s embedded and telecom boards.
Infineon lists the CY7C109B-15VC as Obsolete.
The CY7C109B-15VC is obsolete and no longer in production. We source from available inventory and quote to order against your BOM quantity. Submit an RFQ for current availability and pricing — no stock-holding claim on this page.
No official successor is listed by Infineon. A functionally equivalent 1Mbit asynchronous SRAM in a 32-SOJ package with 15 ns access and 5V supply would need to be verified pin-for-pin and timing-compatible. The 3.3V SRAMs common today are not drop-in replacements due to the supply voltage difference.
No — the CY7C109B-15VC requires a 4.5V–5.5V supply. A 3.3V SRAM would need a level translator on the address/data bus and a separate 3.3V rail, which is not a pin-compatible swap.