74HCT 系列，NXP高速 CMOS 逻辑 工作电压 4.5 － 5.5 兼容性：输入 TTL、输出 CMOS ### 74HCT 系列
inverting Schmitt triggers from Semiconductors are designed specifically to clean up noisy analog signals and convert them into more manageable digital signals. With a Schmitt trigger output, this is power management at its best. This inverting Schmitt trigger has an operating temperature range of -40 °C to 125 °C. This product comes packaged in bulk, so the parts will be stored loosely. This device has a typical operating supply voltage of 5 V. Its minimum operating supply voltage of 4.5 V, while its maximum is 5.5 V.