描述 Description

The 74VHCT14A is an advanced high-speed CMOS HEX SCHMITT inverter fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.

The internal circuit is composed of 3 stages including buffer output, which provides high noise immunity and stable output.

Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V since all inputs are equipped with TTL threshold.

特性 Features

■ High speed: tPD = 5.5ns (typ.) at VCC = 5V

■ Low power dissipation: ICC = 2 μA (Max.) at TA = 25°C

■ Typical hysteresis: Vh = 0.7V at VCC = 4.5V

■ Power down protection on inputs & outputs

■ Symmetrical output impedance: |IOH| = IOL = 8 mA (Min)

■ Balanced propagation delays: tPLH ? tPHL

■ Operating voltage range: VCC(Opr) = 4.5V to 5.5V

■ Pin and function compatible with 74 series 14

■ Improved latch-up immunity

■ Low noise: VOLP = 0.8V (Max.)