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| Part Number | SN74LS27N | SN74LS37N | SN74LS20N | SN74LS21N | SN74LS22N | SN74LS26N | SN74LS27D | SN74LS27M |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active |
| Logic Type | NOR Gate | NAND Gate | NAND Gate | AND Gate | - | NAND Gate | NOR Gate | - |
| Number of Circuits | 3 | 4 | 2 | 2 | - | 4 | 3 | - |
| Number of Inputs | 3 | 2 | 4 | 4 | - | 2 | 3 | - |
| Features | - | - | - | - | - | Open Collector | - | - |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | - | 4.75V ~ 5.25V | 4.75V ~ 5.25V | - |
| Current - Quiescent (Max) | - | - | 800 µA | - | - | - | 4 mA | - |
| Current - Output High, Low | 400µA, 8mA | 1.2mA, 24mA | 400µA, 8mA | 400µA, 8mA | - | -, 8mA | 400µA, 8mA | - |
| Logic Level - Low | 0.8V | 0.8V | 0.8V | 0.8V | - | 0.8V | 0.8V | - |
| Logic Level - High | 2V | 2V | 2V | 2V | - | 2V | 2V | - |
| Max Propagation Delay @ V, Max CL | 15ns @ 5V, 15pF | 24ns @ 5V, 45pF | 15ns @ 5V, 15pF | 20ns @ 5V, 15pF | - | 32ns @ 5V, 15pF | 15ns @ 5V, 15pF | - |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | - | 0°C ~ 70°C | 0°C ~ 70°C | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | - | Through Hole | Surface Mount | - |
| Supplier Device Package | 14-PDIP | 14-PDIP | 14-PDIP | 14-PDIP | - | 14-PDIP | 14-SOIC | - |
| Package / Case | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) | - | 14-DIP (0.300", 7.62mm) | 14-SOIC (0.154", 3.90mm Width) | - |
