| Part Number | 74F521PC | 74F521DC |
|---|---|---|
| Manufacturer | Fairchild Semiconductor | National Semiconductor |
| Category | Logic - Comparators | Logic - Comparators |
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| Product Status | Obsolete | Active |
| Type | Identity Comparator | - |
| Number of Bits | 8 | 8 |
| Output | Active Low | Active Low |
| Output Function | A=B | A=B |
| Voltage - Supply | 4.5V ~ 5.5V | - |
| Current - Output High, Low | 1mA, 20mA | 1mA, 20mA |
| Max Propagation Delay @ V, Max CL | 10ns @ 5V, 50pF | 10ns @ 5V, 50pF |
| Current - Quiescent (Iq) | - | - |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Package / Case | 20-DIP (0.300", 7.62mm) | - |
| Supplier Device Package | 20-PDIP | - |
| Mounting Type | Through Hole | Surface Mount |