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| Part Number | DP8421AV-20 | DP8421AV-25 | DP8422AV-20 | DP8421AVX-20 | DP8420AV-20 |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | Texas Instruments | Texas Instruments | National Semiconductor |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Active |
| Controller Type | Dynamic RAM (DRAM) | Dynamic RAM (DRAM) | Dynamic RAM (DRAM) | Dynamic RAM (DRAM) | - |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | - |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | - |
| Package / Case | 68-LCC (J-Lead) | 68-LCC (J-Lead) | 84-LCC (J-Lead) | 68-LCC (J-Lead) | - |
| Supplier Device Package | 68-PLCC (25.13x25.13) | 68-PLCC (25.13x25.13) | 84-PLCC (29.31x29.31) | 68-PLCC (25.13x25.13) | - |
