View idt74fct16374atpv datasheet:

( ) IDT74FCT16374ATPV 1/2 IL08 C-MOS 16-BIT REGISTER �TOP VIEW� 2 47 1 IN 1 48 1CK IN 1O1 1D1 OE 3 46 1O2 1D2 5 44 1O1 I/O 2 47 1D1 I/O 1O3 1D3 6 43 1O4 1D4 8 41 1O2 I/O 3 46 1D2 I/O 1O5 1D5 9 40 1O6 1D6 11 38 4 GND GND 45 1O7 1D7 12 37 1O8 1D8 1O3 I/O 5 44 1D3 I/O 13 36 2O1 2D1 14 35 1O4 I/O 6 43 1D4 I/O 2O2 2D2 16 33 2O3 2D3 17 32 7 VDD VDD 42 2O4 2D4 19 30 2O5 2D5 20 29 1O5 I/O 8 41 1D5 I/O 2O6 2D6 22 27 2O7 2D7 23 26 1O6 I/O 9 40 1D6 I/O 2O8 2D8 10 GND GND 39 PIN DESCRIPTION 1O7 I/O 11 38 1D7 I/O PIN NAMES DESCRIPTION 1O8 I/O 12 37 1D8 I/O xDx DATA INPUTS xCK CLOK INPUTS 2O1 I/O 13 36 2D1 I/O 3-STATE OUTPUT ENABLE INPUTS x OE (ACTIVE LOW) xOx 3-STATE OUTPUTS 2O2 I/O 14 35 2D2 I/O * FUNCTION TABLE ( 1) 15 GND GND 34 INPUTS O