This part is a kind of semiconductor called 74HC595.

Function of this product has 8-Bit Serial-Input/Serial or Parallel-Output Shift Register with Latched 3-State Outputs.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

74HC595 8−Bit Serial−Input/Serial or Parallel−Output Shift Register with Latched 3−State Outputs High−Performance Silicon−Gate CMOS The 74HC595 consists of an 8−bit shift register and an 8−bit D−type latch with three−state parallel outputs. The shift register accepts serial data and provides a serial output. The shift register also provides parallel data to the 8−bit latch. The shift register and latch have independent clock inputs. This device also has an asynchronous reset for the shift register. The HC595 directly interfaces with the SPI serial data port on CMOS MPUs and MCUs. Features • Output Drive Capability: 15 LSTTL Loads • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2.0 to 6.0 V • Low Input Current: 1.0 mA • High No [ ... ]

74HC595 PDF Datasheet Download