Introduction
...
Cut Down Version
Circuit Diagram
Note: Please check the timings of this circuit.
Timings
Trawling through the datasheets for NAND gates found the following:-
| Part No | Chip | Manufacture | Speed | Package | Price | ||||
|---|---|---|---|---|---|---|---|---|---|
| Min | Typ | Max | |||||||
| 1085297 | 74HCT00D | NXP | 10nS | SOIC | 0.221 | ||||
| 381755 | 74HCT00N | NXP | 10nS | DIP | 0.667 | ||||
| 9590889 | 74HC00 | Ti | 8nS | DIP | 0.31 | ||||
| 1105915 | SN74AHCIG00 | Ti | 5,2 | 8 mA | SOT-23-5 | 1.78 | |||
| 1287697 | SN74LVCIG007 SN74LVC1G00DBVR | Ti | 4.0 | 32mA | SOT-23-5 | 1.98 | |||
| SN74LVC1G00-EP | Ti | 1.0 | 4.0 | ||||||
The individual NAND gates are displaying the fastest times. Here is an example:-
Extra components required
Component | Manufacturer Part No | Order Code | Price | Min Qty |
|---|---|---|---|---|
N95BT | Maplin | 4.09 | 1 | |
YA29G | Maplin | 1.79 | 1 | |
MFR3 2K2 FC | 1565301 | £0.085 | 10 |