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| Part Number | SN74F521NS | SN74F521NSR | SN74F521N |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active |
| Type | Identity Comparator | Identity Comparator | Identity Comparator |
| Number of Bits | 8 | 8 | 8 |
| Output | Active Low | Active Low | Active Low |
| Output Function | A=B | A=B | A=B |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Current - Output High, Low | 1mA, 20mA | 1mA, 20mA | 1mA, 20mA |
| Max Propagation Delay @ V, Max CL | 10ns @ 5V, 50pF | 10ns @ 5V, 50pF | 10ns @ 5V, 50pF |
| Current - Quiescent (Iq) | - | - | - |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) | 20-SOIC (0.209", 5.30mm Width) | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-SO | 20-SO | 20-PDIP |
| Mounting Type | Surface Mount | Surface Mount | Through Hole |
