M74HC164 Overview
s The M74HC164 is an high speed CMOS 8 BIT b SIPO SHIFT REGISTER fabricated with silicon O gate C2MOS technology. - The M74HC164 is an 8 bit shift register with serial t(s) data entry and an output from each of the eight stages. Data is entered serially through one of two c inputs (A or B), either of these inputs can be used u as an active high enable for data entry through the d other input. An unused input must be high, or both ro inputs connected together. Each low-to-high DIP SOP TSSOP ORDER CODES PACKAGE TUBE DIP SOP TSSOP M74HC164B1R M74HC164M1R T&R 3, 4, 5, 6, 10, 11, 12, 13 GND Vcc NAME AND FUNCTION Data Inputs Clock Input (LOW to HIGH, Edge Triggered Master Reset Input Ground (0V) Positive Supply Voltage t(s) TRUTH TABLE c INPUTS OUTPUTS rodu CLEAR CLOCK SERIAL IN A B QA QB ........... P L X X X L L ........... lete H X X NO CHANGE o H L X L QAn ........... bs H X L L QAn...