View tc74hct174af datasheet:

TC74HCT174AF IL22 ********** C-MOS HEX D-TYPE FLIP FLOP WITH CLEAR -TOP VIEW- 14 15 D6 Q6 13 12 CLR IN 1 VDD (+5V) 16 D5 Q5 11 10 D4 Q4 Q1 OUT 2 15 Q6 OUT 6 7 D3 Q3 4 5 D2 Q2 D1 IN 3 14 D6 IN 3 2 D1 Q1 D2 IN 4 13 D5 IN 1 CLR 9 CK Q2 OUT 5 12 Q5 OUT D3 IN 6 11 D4 IN INPUTS OUTPUT FUNCTION CLR D CK Q Q3 OUT 7 10 Q4 OUT 0 X X 0 CREAR 1 0 0 — 8 GND 9 CK IN 1 1 1 — 1 X Qn NO CHANGE 0 ; LOW LEVEL INPUT 1 ; HIGH LEVEL CK ; CLOCK X ; DON'T CARE CLR ; CLEAR D1 - D6 ; DATA OUTPUT Q1 - Q6 ; DATA D1 D2 D3 D4 D5 D6 3 4 6 11 13 14 1 CLR R R R R R R D D D D D D CK Q CK Q CK Q CK Q CK Q CK Q 9 CK 1 5 7 10 12 15 Q1 Q2 Q3 Q4 Q5 Q6