BUY 74LS125 https://www.utsource.net/itm/p/98224.html
QUAD 3-STATE BUFFERS
Manufacturer: Texas Instruments Description: Quadruple Bus Buffer Gates Package: DIP-14 Features: - Low power Schottky TTL - Inputs fully compatible with standard TTL outputs - Outputs source/sink 24 mA - Outputs capable of driving up to 15 LSTTL loads - Outputs may be paralleled for higher current - Operating voltage range: 4.75V to 5.25V Applications: - Data transmission and reception - Memory decoding and demultiplexing - Address decoding - Clock and timing control - Bus-oriented systems
(For reference only)