| PartNumber | SN74AS21N | SN74AS21D | SN74AS21DR |
| Description | Logic Gates Dual 4-Input Positive-AND Gates | Logic Gates Dual 4-Input Positive-AND Gates | Logic Gates Dual 4-Input Positive-AND Gates |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Logic Gates | Logic Gates | IC Chips |
| RoHS | Y | Y | - |
| Product | Single-Function Gate | Single-Function Gate | - |
| Logic Function | AND | AND | - |
| Logic Family | AS | AS | - |
| 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 | - 2 mA | - 2 mA | - |
| Low Level Output Current | 20 mA | 20 mA | - |
| Propagation Delay Time | 15 ns | 15 ns | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | PDIP-14 | SOIC-14 | - |
| Packaging | Tube | Tube | Tape & Reel (TR) Alternate Packaging |
| Function | AND | AND | - |
| Height | 4.57 mm | 1.58 mm | - |
| Input Type | TTL | TTL | - |
| Length | 19.3 mm | 8.65 mm | - |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C | - |
| Output Type | TTL | TTL | - |
| Series | SN74AS21 | SN74AS21 | 74AS |
| Width | 6.35 mm | 3.91 mm | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Logic Type | 4-Input AND | 4-Input AND | AND Gate |
| Number of Bits | 2 bit | 2 bit | - |
| Operating Supply Current | 1.4 uA | 1.4 uA | - |
| Operating Supply Voltage | 5 V | 5 V | - |
| Product Type | Logic Gates | Logic Gates | - |
| Factory Pack Quantity | 25 | 50 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.032734 oz | 0.004564 oz | - |
| Package Case | - | - | 14-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Mounting Type | - | - | Surface Mount |
| Features | - | - | - |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 14-SOIC |
| Number of Circuits | - | - | 2 |
| Number of Inputs | - | - | 4 |
| Current Quiescent Max | - | - | - |
| Current Output High Low | - | - | 2mA, 20mA |
| Max Propagation Delay V Max CL | - | - | 6ns @ 5V, 50pF |
| Logic Level Low | - | - | 0.8V |
| Logic Level High | - | - | 2V |