74VHC14中文资料Hex Schmitt Inverter数据手册ST规格书

描述 Description

The 74VHC14 device is an advanced high-speed CMOS hex Schmitt inverter manufactured with sub-micron silicon gate and double-layer metal wiring C2MOS technology. The internal circuit is composed of 3 stages including a buffer output, which provides high noise immunity and stable output. Power-down protection is provided on all inputs and 0 to 7 V can be accepted on inputs regardless of the supply voltage. This device can be used to interface from 5 V to 3 V. Pin configuration and function are the same as those of the 74VHC04 device but the 74VHC14 device has hysteresis. This along with its Schmitt trigger function allows the device to be used on line receivers with slow rise/fall input signals. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2 kV ESD immunity and transient excess voltage.

特性 Features

High speed: t
PD= 5.5 ns (typ.) at V
CC= 5 V
Low power dissipationI
CC= 2 μA (max.) at T
A= 25C

Typical hysteresis: V
h= 1 V at V
CC= 4.5 V
Power-down protection on inputsSymmetrical output impedance |I
OH| = I
OL= 8 mA (min.)

Balanced propagation delay: t
PLH≅ t
PHL
Operating voltage rangeV
CC(opr.) = 2 V to 5.5 V

Pin and function compatible with 74 series 14
Improved latch-up immunity
Low noiseV
OLP= 0.8 V (max.)

ESD performanceHBM: 2000 V
MM: 200 V
CDM: 1000 V

简介

74VHC14属于集成电路（IC）的门反相器。由制造生产的74VHC14门和反相器逻辑栅极和逆变器系列中的产品对单个逻辑信号执行基本逻辑运算（例如 AND、NOT、OR 等）。与触发器不同，它们不能够存储信息，不会对提供给其输入的信号立即做出响应。虽然早就被集成电路实施形式所取代，以用于实现复杂功能，但分立栅极仍可在仅需要非常简单逻辑功能的情况下使用。