74HC151?is 8 - Input Multiplexer?16 Pin?IC.?Data Selector/Multiplexer contains full on-chip decoding to select one-of-eight data sources as a result of a unique three binary code at select inputs. Two complementary outputs provide both inverting and non-inverting buffer operation.

74HC164 utilizes advanced silicon-gate CMOS technology. It has the high noise immunity and low consumption of standard CMOS integrated circuits.

74HC221 is a 16 Pin Hex D-type Flip-Flop with Reset?IC?having 2V to 6V Operating Voltage range with 5.2mA output current and 1uA low input current. It utilize ?advanced ?silicon-gate ?CMOS ?technology.