M74HC173 - STMicroelectronics

M74HC173 QUAD D-TYPE REGISTER

The M74HC173 is an high speed CMOS QUAD D-TYPE REGISTER (3-STATE) fabricated with silicon gate C2MOS technology. This device is composed of a four-bit register including D-TYPE flip-flops and 3-state buffers. The four flip-flops are controlled by a common clock input (CLOCK) and a common reset input (CLEAR). Signals applied to the data inputs (D1 D4) are sto.

Features

puts (G1 and G2) are held low. The reset feature is asynchronous and active high. The stored data are provided on each output only when both output control inputs (M and N) are held low, otherwise the outputs go to the high-impedance state. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/12 M74HC173 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE CLEAR CLOCK X X X X H X L L L L L X : Don’t Care Z : High Impedance DATA ENABLE G1 G2 X X X X X X X X H X X H L .