IC 74HC595D
New Integrated circuitsAn integrated circuit with a serial-in, parallel-out 8-bit shift register. Each output has three possible logic states, and with its high-current output can simultaneously drive 15 TTL loads. Suitable for many applications in servers, LED display drivers, network switches, but you can also find it in inverter and other welding machines in the operating-mode selection circuit. Supply voltage 2V-6V. Package SOP-16