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| PartNumber | DP8421ATV-25 | DP8421ATVX-25 | DP8421AV-20 |
| Description | DRAM Controller, CMOS, PQCC68 | IC CTRLR/DVR CMOS PROGRAM 68PLCC | IC CTRLR/DVR CMOS PROGRAM 68PLCC |
| Manufacturer | - | - | Texas Instruments |
| Product Category | - | - | Memory - Controllers |
| Series | - | - | - |
| Packaging | - | - | Tube |
| Package Case | - | - | 68-LCC (J-Lead) |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 68-PLCC |
| Controller Type | - | - | Dynamic RAM (DRAM) |