BUY LC244 https://www.utsource.net/itm/p/1385493.html

Description: Octal Buffer/Line Driver with 3-State Outputs Features: Octal buffer/line driver with 3-state outputs Outputs source/sink 24 mA Outputs can be paralleled for higher current capability Inputs compatible with standard CMOS outputs TTL input and output compatibility Outputs may be connected to bus-hold data inputs to eliminate the need for external pull-up/pull-down resistors Power-off high-impedance inputs and outputs Available in 20-pin SSOP package Applications: Bus-oriented systems Data transmission and reception Data buffering Data bus driving Data bus isolation (For reference only)