Test fixtures for high speed l

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.).