Manufacturer: NXP/PHIPackage: SOP-16Description: The 74HC139 is a dual 2-to-4 line decoder/demultiplexer. It is designed to be used with the 74HC138 3-to-8 line decoder/demultiplexer. The 74HC139 has two active-low enable inputs (E1 and E2) and four active-low outputs (Y0 to Y3).Features: Low power consumption High noise immunity High speed operation High output current Inputs and outputs fully compatible with CMOS, TTL and MOSApplications: Address decoding Data demultiplexing Memory decoding Bus decoding(For reference only)
https://www.utsource.net/itm/p/496451.html

74HC139
