The Philips Semiconductors Logic Product Group (LPG) operates a Characterization Laboratory in Albuquerque, New Mexico. This Lab maintains the capability of testing the 11 logic product families the Group supports. These include: BiCMOS ABT, ABTH, LVT, ALVT, FAST-74FXXX, ALS-74ALSXXX, High-Speed CMOS-74HCXXX, High-Speed CMOS/TTL-74HCTXXX, Advanced CMOS/TTL. Due to the great diversity of product families and the different testing requirements and complexity of the product types of each family, Philips Semiconductors LPG Characterization has designed and built a bench test AC fixture that is specifically designed to address to only the High-speed logic families. It has the advantages of being very versatile, has high bandwidth capability (.750MHz), is 50W system compatible, and is manually programmable for the input static voltages. This provides the ability to have one fixture that addresses many product types across families. The extent of this versatility is explained in the following Application Note. The families that this fixture is intended to support are: FAST, ALS, ABT, LVT, ALVT (Note: This fixture is compatible with any 500W pull-down load.).