CD54AC163, CD74AC163 4-BIT SYNCHRONOUS BINARY COUN.
Texas Instruments
CD74AC163 - 4-BIT SYNCHRONOUS BINARY COUNTERS
CD54AC163, CD74AC163 4-BIT SYNCHRONOUS BINARY COUNTERS SCHS299B – APRIL 2000 – REVISED MARCH 2003 D Internal Look-Ahead for Fast Counting D Carry Ou.