This part is a kind of semiconductor called 74HCU04.

Function of this product has Hex Unbuffered Inverter.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

74HCU04 Hex Unbuffered Inverter High−Performance Silicon−Gate CMOS The 74HCU04 is identical in pinout to the LS04 and the MC14069UB. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device consists of six single−stage inverters. These inverters are well suited for use as oscillators, pulse shapers, and in many other applications requiring a high−input impedance amplifier. For digital applications, the HC04 is recommended. Features • Output Drive Capability: 10 LSTTL Loads • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2.0 to 6.0 V; 2.5 to 6.0 V in Oscillator Configurations • Low Input Current: 1.0 mA • High Noise Immunity Characteristic of CMOS Devices • In C [ ... ]

74HCU04 PDF Datasheet Download