Cypress CY7C139-25JXC, 36Kbit (4Kx9) dual-port asynchronous SRAM, 25 ns access time, 4.5–5.5V supply, 68-PLCC J-lead surface-mount, 0–70°C commercial.
| 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 | Tray |
| Technology | SRAM - Dual Port, Asynchronous |
| Access time | 25 ns |
| Memory size | 36Kbit |
| Memory format | SRAM |
| Case | 68-LCC (J-Lead) |
| Memory organization | 4K x 9 |
| Write cycle time - word, page | 25ns |
The CY7C139-25JXC is a 36Kbit dual-port asynchronous SRAM organized as 4K words by 9 bits. Two independent ports with separate address, data, and control lines let two bus masters read or write the same memory array without external arbitration logic.
The 25 ns write cycle time (word, page) matches the read side.
CY7C139-25JXC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead-time estimate.
No official pin-compatible successor or second-source alternate is documented in the lifecycle record. Any alternative would require a footprint or timing re-evaluation.
The CY7C139-25JXC is supplied in a 68-lead PLCC (J-lead) surface-mount package, 24.23 mm body, in tray packaging.