SCEA097 June   2021 SN74LXC8T245-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Input/Output Architecture
    1. 2.1 Integrated Pull-Down Resistors
    2. 2.2 Input Characteristics
      1. 2.2.1 Schmitt-Trigger Inputs
    3. 2.3 Output Characteristics
  4. 3LXC Features
    1. 3.1 VCC Isolation and VCC Disconnect
  5. 4LXC Applications

Schmitt-Trigger Inputs

The LXC family of translators have schmitt-triggers integrated in all input buffers. Schmitt-triggers are key components in making the LXC family robust. They provide more noise immunity to accommodate all types application environments, and they eliminate any negative side effects of digital signals with slow edge rates as decribed in Solving CMOS Transition Rate Issues Using Schmitt-Triggers. Figure 2-2 and Figure 2-3 illustrate the dynamic power benefits provided by the Schmitt-trigger inputs.

GUID-20201116-CA0I-ZBZL-J82G-LWQMGBCMLGXK-low.gifFigure 2-2 Supply Current Across Input Voltage (1.2 V, 1.5 V, and 1.8 V Supply)
GUID-8834FAF7-CED5-4DDD-9EC5-6FEA7C16CE7F-low.gifFigure 2-3 Supply Current Across Input Voltage (2.5 V, 3.3 V, and 5 V Supply)