NXP 74HC14D,653 非门, HC系列, 施密特触发, 1输入, 25 mA, 2V至6V, SOIC-14
The 74HC14D is a Hex Inverter with Schmitt-trigger inputs. This device features reduced input threshold levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. Schmitt-trigger inputs transform slowly changing input signals into sharply defined jitter-free output signals.