This part is a kind of semiconductor called 74HC595.

Function of this product has 8-bit Shift Register/Latch (with 3-state outputs).

Manufacturers : Hitachi

Image and pinout :

Some of the text within the PDF file :

HD74HC595 8-bit Shift Register/Latch (with 3-state outputs) Description This device each contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift register and the storage register. The shift register has a direct-overriding clear, serial input, and serial output pins for cascading. Both the shift register and storage register clocks are positive-edge triggered. If the user wishes to connect both clocks together, the shift register state will always be one clock pulse ahead of the storage register. Features • • • • • High Speed Operation: tpd (RCK to Q) = 17 ns typ (C L = 50 pF) High Output Current: Fanout of 15 LSTTL Loads (QA to QH out [ ... ]

74HC595 PDF Datasheet Download