What Is the Definition of a TTL (Transistor-Transistor Logic) Compatible Signal?
Hardware: Multifunction DAQ (MIO)
What is the definition of a TTL (Transistor-Transistor Logic) compatible signal?
A TTL signal must meet an output voltage and current specification, an input voltage and current specification, and a rise/fall time specification. For any given hardware, the signal must also have a minimum pulse width.
Note: All specifications use the following notation:
Note: The ratio between IOL and IIL as well as IOH and IIH is 10 due to the standard fanout of TTL logic.
KnowledgeBase 16A9OC6O: What are the Basic Differences Between CMOS and TTL Signals?
KnowledgeBase 32UG8H6I: How Can I Use my Non-TTL Signal to Generate a TTL digital Signal?
Report Date: 07/19/2002
Last Updated: 10/08/2010
Document ID: 2NICQ15A