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| PartNumber | CY7C421-20VXCT | CY7C421-20VC | CY7C421-20VXC |
| Description | FIFO 512x9 .300" PARALLEL CASCADEABLE FIFO COM | FIFO, 512X9, 20ns, Asynchronous | |
| Manufacturer | Cypress Semiconductor | - | - |
| Product Category | FIFO | - | - |
| RoHS | Y | - | - |
| Data Bus Width | 9 bit | - | - |
| Bus Direction | Unidirectional | - | - |
| Memory Size | 4.5 kbit | - | - |
| Timing Type | Asynchronous | - | - |
| Organization | 512 k x 9 | - | - |
| Number of Circuits | 2 | - | - |
| Access Time | 20 ns | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 4.5 V | - | - |
| Supply Current Max | 55 mA | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Package / Case | SOJ-28 | - | - |
| Packaging | Reel | - | - |
| Height | 2.41 mm | - | - |
| Series | CY7C421 | - | - |
| Width | 7.62 mm | - | - |
| Brand | Cypress Semiconductor | - | - |
| Mounting Style | SMD/SMT | - | - |
| Moisture Sensitive | Yes | - | - |
| Operating Supply Voltage | 5 V | - | - |
| Product Type | FIFO | - | - |
| Factory Pack Quantity | 1000 | - | - |
| Subcategory | Memory & Data Storage | - | - |