Synchronous FIFO for 5 V bus buffering
The CY7C4205-10AXC: Synchronous FIFO, 256 words by 18 bits, 4.5 Kbits total. Operates at 100 MHz with 8 ns access time, 4.5 V to 5.5 V supply.
Cypress CY7C4205-10AXC Synchronous FIFO, 4.5K (256x18), 100 MHz, 8 ns
MPNCY7C4205-10AXC
Obsolete
Cypress CY7C4205-10AXC, Series CY7C, Synchronous FIFO, 4.5K (256 x 18), 100 MHz data rate, 8 ns access time, 5 V supply, 64-LQFP, 0°C to 70°C.
$13.9300Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| 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 | 4.5K (256 x 18) |
| FWFT support | No |
| Case | 64-LQFP |
| Bus directional | Uni-Directional |
| Retransmit capability | Yes |
| Programmable flags support | Yes |
Product details
Frequently asked questions
Is CY7C4205-10AXC obsolete?
Yes, the CY7C4205-10AXC is marked obsolete by Cypress (Infineon). No official successor part number is listed. Sourcing is limited to independent distributors carrying new-old-stock or surplus inventory.
What is the replacement for CY7C4205-10AXC?
No official replacement or successor part number is listed in the lifecycle record. A pin-compatible alternative within the CY7C4205 family may exist, but Cypress has not published a direct drop-in. Contact your design team to evaluate a cross if a redesign is feasible.
What is the supply voltage of CY7C4205-10AXC?
The supply voltage range is 4.5 V to 5.5 V, making it a 5 V nominal part. It is not compatible with 3.3 V or lower-voltage logic without level translation.
What is the package type of CY7C4205-10AXC?
The package is a 64-LQFP (low-profile quad flat pack) with a 14x14 mm body, surface-mount. The supplier device package is listed as 64-TQFP (14x14).
What is the access time of CY7C4205-10AXC?
The access time is 8 ns, measured from the read clock edge to valid data output. At the 100 MHz data rate, this leaves 2 ns of setup margin for the receiving logic.