Timing Library Format
From Wikipedia, the free encyclopedia
Timing Library Format (TLF) is a type of text file (Related to Electronic Design Automation (EDA) tools)
A TLF file is a text file in nature and contains timing and logical information about a collection of cells (circuit equivalents).
TLF Reference.pdf: http://www.ece.virginia.edu/~mrs8n/cadence/SynthesisTutorials/ct_tlfref.pdf