| 422281 | CY7C421-15LMB | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422282 | CY7C421-15LMB | 512 x 9 asynchronous FIFO, 15 ns | Cypress |
| 422283 | CY7C421-15VI | 512 x 9 asynchronous FIFO, 15 ns | Cypress |
| 422284 | CY7C421-15VI | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422285 | CY7C421-20JC | 512 x 9 asynchronous FIFO, 20 ns | Cypress |
| 422286 | CY7C421-20JC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422287 | CY7C421-20JCT | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422288 | CY7C421-20JI | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422289 | CY7C421-20JI | 512 x 9 asynchronous FIFO, 20 ns | Cypress |
| 422290 | CY7C421-20JXC | 512 × 9 Asynchronous FIFO | Cypress |
| 422291 | CY7C421-20JXCT | 512 × 9 Asynchronous FIFO | Cypress |
| 422292 | CY7C421-20PC | 512 x 9 asynchronous FIFO, 20 ns | Cypress |
| 422293 | CY7C421-20PC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422294 | CY7C421-20VC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422295 | CY7C421-20VC | 512 x 9 asynchronous FIFO, 20 ns | Cypress |
| 422296 | CY7C421-20VXC | 512 × 9 Asynchronous FIFO | Cypress |
| 422297 | CY7C421-20VXCT | 512 × 9 Asynchronous FIFO | Cypress |
| 422298 | CY7C421-25DMB | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422299 | CY7C421-25DMB | 512 x 9 asynchronous FIFO, 25 ns | Cypress |
|
| 422300 | CY7C421-25JC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422301 | CY7C421-25JC | 512 x 9 asynchronous FIFO, 25 ns | Cypress |
| 422302 | CY7C421-25JCT | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422303 | CY7C421-25JI | 512 x 9 asynchronous FIFO, 25 ns | Cypress |
| 422304 | CY7C421-25JI | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422305 | CY7C421-25JIT | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422306 | CY7C421-25PC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422307 | CY7C421-25PC | 512 x 9 asynchronous FIFO, 25 ns | Cypress |
| 422308 | CY7C421-25PI | 512 x 9 asynchronous FIFO, 25 ns | Cypress |
| 422309 | CY7C421-25PI | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422310 | CY7C421-25VC | 512 x 9 asynchronous FIFO, 25 ns | Cypress |
| 422311 | CY7C421-25VC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422312 | CY7C421-25VCT | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422313 | CY7C421-30DMB | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422314 | CY7C421-30DMB | 512 x 9 asynchronous FIFO, 30 ns | Cypress |
| 422315 | CY7C421-30JC | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422316 | CY7C421-30JC | 512 x 9 asynchronous FIFO, 30 ns | Cypress |
| 422317 | CY7C421-30JCT | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422318 | CY7C421-30JI | 512 x 9 asynchronous FIFO, 30 ns | Cypress |
| 422319 | CY7C421-30JI | 256/512/1K/2K/4K x 9 Asynchronous FIFO | Cypress |
| 422320 | CY7C421-30LMB | 512 x 9 asynchronous FIFO, 30 ns | Cypress |
