| PartNumber | SN74LS21N | SN74LS21NE4 | SN74LS21NG4 |
| Description | Logic Gates Dual 4-Input | Logic Gates Dual 4-input Positive-AND Gates | IC GATE AND 2CH 4-INP 14DIP |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Logic Gates | Logic Gates | - |
| RoHS | Y | Y | - |
| Product | Single-Function Gate | Single-Function Gate | - |
| Logic Function | AND | AND | - |
| Logic Family | LS | LS | - |
| Number of Gates | 2 Gate | 2 Gate | - |
| Number of Input Lines | 4 Input | 4 Input | - |
| Number of Output Lines | 1 Output | 1 Output | - |
| High Level Output Current | - 0.4 mA | - 0.4 mA | - |
| Low Level Output Current | 8 mA | 8 mA | - |
| Propagation Delay Time | 15 ns | 15 ns | - |
| Supply Voltage Max | 5.25 V | 5.25 V | - |
| Supply Voltage Min | 4.75 V | 4.75 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | PDIP-14 | PDIP-14 | - |
| Packaging | Tube | Tube | - |
| Function | Dual 4-Input | AND | - |
| Height | 4.57 mm | 4.57 mm | - |
| Input Type | TTL | TTL | - |
| Length | 19.3 mm | 19.3 mm | - |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C | - |
| Output Type | TTL | TTL | - |
| Series | SN74LS21 | SN74LS21 | - |
| Width | 6.35 mm | 6.35 mm | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Logic Type | 4-Input AND | 4-Input AND | - |
| Number of Bits | 2 bit | 2 bit | - |
| Operating Supply Current | 2.5 uA | 2.5 uA | - |
| Operating Supply Voltage | 5 V | 5 V | - |
| Product Type | Logic Gates | Logic Gates | - |
| Factory Pack Quantity | 25 | 25 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.032734 oz | 0.032734 oz | - |