Hi, I'm Jewel with Kingston Technical Support. To find the datasheet on any of our memory, current or discontinued, you can search for it with it's part number on our Memory Search page, in the field titled Search by Memory Part Number, here: http://www.kingston.com/us/memory/search/options/
Our memory part numbers usually start with K and end in the capacity. In your case it is KHX1333C7D3K4/8GX, here is the link to it's datasheet:
http://www.kingston.com/dataSheets/KHX1333C7D3K4_8GX.pdf
For any further assistance, please call us at 1-800-435-0640 (USA and Canada only) M - F 6am - 6pm PT and I or another available Technician will assist you. Please be sure to have the part in question on hand when you call.
Thank you for selecting Kingston as your upgrade partner.