Do you have multiple logical states? Implement this MM74HC164MTC counter shift register by Fairchild Semiconductor in order to switch and maintain states. This counter shift register has an operating temperature range of -40 °C to 85 °C. This product comes in rail packaging to keep individual parts separated and protected. This device has a typical operating supply voltage of 2.5|3.3|5 V. Its minimum operating supply voltage of 2 V, while its maximum is 6 V.