74VHCT 系列，Fairchild Semiconductor### 74VHCT 系列
General Description
The VHCT14A is an advanced high speed CMOS Hex Schmitt Inverter fabricated with silicon gate CMOS technology. The VHCT14A contains six independent inverters which are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. Protection circuits ensure that 0V to 7V can be applied to the input pins without regard to the supply voltage and to the output pins with VCC 0V. These circuits prevent device destruction due to mismatched supply and input/output voltages. This device can be used to interface 3V to
5V systems and two supply systems such as battery backup.
Features
■High speed: tPD 5.0 ns typ at TA 25qC
■High noise immunity: VIH 2.0V, VIL 0.8V
■Power down protection is provided on all inputs and outputs
■Low noise: VOLP 1.0V max
■Low power dissipation:
ICC 2 PA max @ TA 25qC
■Pin and function compatible with 74HCT14