BUY SN74LS06N https://www.utsource.net/itm/p/740952.html
HEX INVERTER BUFFERS/DRIVERS WITH OPEN-COLLECTOR HIGH-VOLTAGE OUTPUTS
Description: The SN74LS06N is a 14-pin integrated circuit (IC) from Texas Instruments. It is a member of the 74LS family of logic ICs.
Features:
Low power consumption
High noise immunity
High speed operation
Low input current
Outputs source/sink up to 20 mA
Applications:
Digital logic circuits
Computer logic circuits
Data processing systems
Interface circuits
Timing circuits
Memory circuits
(For reference only)