Description
74HC series ICs are High-speed logic gates with very low power consumption that utilize advanced silicon-gate CMOS technology and 74HC30 is one of them. It has balanced propagation delay and transition times. 74HC30 ICs contain an 8 input NAND gate in one package. The Boolean expression can be written as Y = ( A.B.C.D.E.F.G.H )’ or Y= A’+B’+C’+D’+E’+F’+G’+H’ for each NAND gate.
Internal Structure of 74HC30 device,
The 74HC30 ICs have a wide operating range of VCC from 2 V to 6 V. Maximum current consumption is 20 uA through Icc and 1 uA per input pin. And the propagation delay is 10 ns. They can drive 10 LS-TTL loads at a time. Which means that the output pin of 8 pin NAND gate can drive 10 TTL based Low-Power Schottky( LS ) input pins. They can provide 4 mA on outputs at 5 V VCC. They allow inputs and outputs up to VCC. Recommended operating VCC is 5 V. Load Current can reach up to 25 mA per output pin and 50 mA for overall pins in between 0 V to VCC.
Specification:
| Operating Voltage Range | 2.0 to 6.0 V |
| Package | DIP−14 |
| Input Current | 1 uA |
| Powering Current | 20 uA |
| Output Current at VCC | 4 mA |
| Fan-Out | 10 LS-TTL Load |
| Propagation Delay | 10 ns |
| Temperature Range | -65 °C to +150 °C |
Pin Configuration:
| Input Pins | A, B, C, D, E, F, G, H |
| Inverting Output Pins | Y' |
| Not Connected Pin | 9, 10, 13-NC |
| Power Supply | VCC |
| Ground | GND |
| Country of Origin | China |