74VCX162839 Low Voltage 20-Bit Selectable Register.
74VCX162839 - Low Voltage 20-Bit Selectable Register/Buffer
74VCX162839 Low Voltage 20-Bit Selectable Register/Buffer with 3.6V Tolerant Inputs/Outputs and 26Ω Series Resistors in the Outputs March 1998 Revise.