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

描述 Description

General Description
The ’VHC14 is an advanced high speed CMOS Hex Schmitt Inverter fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bi polar Schottky TTL while maintaining the CMOS low power dissipation. Pin configuration and function are the same as the VHC04 but the inputs have hysteresis between the positive-going and negative-going input thresholds, which are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals, thus providing greater noise margin than conventional inverters.
An input protection circuit ensures that 0V to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.

特性 Features

■ Low power dissipation:
   ICC e 2 mA (Max) at TA e 25§C
■ High noise immunity: VNIH e VNIL e 28% VCC (Min)
■ All inputs are equipped with a power down protection function
■ Balanced prpagation delays: TPLH j TPHL
■ Low noise: OLP e 0.8V (Max)
■ Pin and function compatible with 74HC14