- Quad – The 4 NAND logic gates built into the integrated circuit. Schematics diagrams will often indicate that there’s 4 logic gates in an IC by adding 1/4, 2/4, 3/4, or 4/4, to indicate that you can use the same integrated circuit for all those logic gates.
- 2 input – Each NAND logic gate has 2 inputs. That’s 2 pins we can attach to other circuitry in order to respond to the voltage.
- NAND logic gate:
- Output is high if one or more input is low.
- Output is low if all inputs are high.
- High: A voltage that is close to the positive supply voltage. How close it is, or needs to be, varies.
- Low: A voltage that is close to the negative supply voltage. How close it is, or needs to be, varies.
The high speed CMOS version of the 7400, indicated by 74HC00, is what you will usually want to use these days.
Not guaranteed to be accurate. Always consult the datasheet for the most accurate information.
- DC supply current: ±50mA.
- Output current: ±25mA DC current per pin. But no more than ±50mA total.
- Supply voltage (Vcc) in reference to 0V ground (GND): 2 to 6V
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