The 74LS21 contains two independent 4-input AND gates. The 74LS21 is characterized for operation from 0 °C to 70 °C. The 74LS21 features is a package Options include Plastic “small outline” packages, ceramic chips carriers and flat packages and plastic and ceramic DIPs.
Specifications:-
| Parameter | Specification |
| Supply Voltage (VCC) | 7 V |
| Input Voltage (VI) | 7 V |
| Operating free-air temperature range | 0°C to +70°C |
| Storage temperature range | –65°C to +150°C |
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