Synchronous FIFO for 5 V data-path buffering
The CY7C4245-10AXC: Synchronous FIFO organized 4K words by 18 bits, 100 MHz data rate, 8 ns access time.
Classified as obsolete. No last-time-buy window remains.

Cypress CY7C4245-10AXC synchronous FIFO, 72 Kbit (4K x 18), 100 MHz data rate, 8 ns access time, 4.5 V to 5.5 V supply, 64-LQFP, 0°C to 70°C.
| Parameter | Value |
|---|---|
| Series | CY7C |
| Mounting | Surface Mount |
| Expansion type | Depth, Width |
| Supply voltage | 4.5 V ~ 5.5 V |
| Current - supply | 45mA |
| Operating temperature | 0°C~70°C |
| Package | Tray |
| Function | Synchronous |
| Data rate | 100MHz |
| Access time | 8ns |
| Memory size | 72K (4K x 18) |
| FWFT support | No |
| Case | 64-LQFP |
| Bus directional | Uni-Directional |
| Retransmit capability | Yes |
| Programmable flags support | Yes |
The CY7C4245-10AXC: Synchronous FIFO organized 4K words by 18 bits, 100 MHz data rate, 8 ns access time.
Classified as obsolete. No last-time-buy window remains.
There is no official Cypress pin-compatible successor for this part. Any replacement must be verified against the original 64-LQFP footprint, 5 V supply, and synchronous 100 MHz timing — do not assume a drop-in exists without cross-referencing the datasheet.
It is a 72 Kbit FIFO organized as 4K words by 18 bits.
It requires a 4.5 V to 5.5 V supply, nominally 5 V.