| 326 / | HD | ELECTRONIC DIGITAL LOGIC CIRCUITRY |
| 21 | DF | SIGNAL SENSITIVITY OR TRANSMISSION INTEGRITY {5} |
| 31 | ![]() | .~ Signal level or switching threshold stabilization {3} |
| 32 | DF | .~.~> Temperature compensation |
| 33 | DF | .~.~> Bias or power supply level stabilization |
| 34 | DF | .~.~> With field effect-transistor |