This part is a kind of semiconductor called AD53500.

Function of this product has High Speed/ High Current Capability Pin Driver.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

a FEATURES –2 V to +6 V Output Range 2.5 ⍀ Output Resistance 2.5 ns Tr/Tf for a 3 V Step 300 MHz Toggle Rate Can Drive 25 ⍀ Lines and Lower Peak Dynamic Current Capability of 400 mA Inhibit Leakage <1 ␮ A On-Chip Temperature Sensor APPLICATIONS Automatic Test Equipment Semiconductor Test Systems Board Test Systems Instrumentation and Characterization Equipment VH DATA DATA INH INH VL High Speed, High Current Capability Pin Driver AD53500 FUNCTIONAL BLOCK DIAGRAM VCC VCC VEE VEE 39nF 39nF VHDCPL DRIVER 2⍀ VOUT VLDCPL TVCC AD53500 1.0␮A/K THERM GND GND GND GND GND PRODUCT DESCRIPTION: The AD53500 is a complete high speed driver designed for use in digital or mixed signal test systems where high speed and high output drive capabilities are needed. Combining a high spee [ ... ]

AD53500 PDF Datasheet Download