This is one Lot (Qty. 5) of New NEC 0.5GHz - 2.5GHz Frequency Prescaler, Divide By 2. Part Nubmer: UPB584G-E1 in Surface Mount SO-8 Package.

 Gerenal Specifications:

• Frequency Ragne: 500MHz - 2.5GHz
• Divider Ratio: 2
• Operating Voltage : 4.5V to 5.5V
• Low Current: 18mA
• Operating temperature: -20C to +75C
• SO-8 Package

Detail Spec on Web as follows:

http://rfbayinc.com/upload/files/data_sheet/ic/upb584g.pdf