SCEU021A November   2019  – August 2021 TXB0101 , TXB0102 , TXB0104

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
      1. 1.1.1 TXB Family
    2. 1.2 Hardware Description
      1. 1.2.1 Headers
      2. 1.2.2 Voltage Supply
      3. 1.2.3 Bypass Capacitors
      4. 1.2.4 OE Select
      5. 1.2.5 RC Loading
  3. 2Board Layout
  4. 3Schematic and Bill of Materials
    1. 3.1 Schematic
    2. 3.2 Bill of Materials
  5. 4Revision History

1.2.4 OE Select

A 3x1 100 mil header provides access to the Output Enable (OE) pin on the device. The 100 mil jumper is available for selecting a known state for the OE pin. The outer header pins access VCCA or GND through a 10 kΩ resistor. OE on TXB devices may be referenced to either VCCA or GND, although using a pull up resistor on OE during device power-on is recommended to have the I/O ports at high-impedance before the VCCA becomes stable. Output enable pin is the input for the device and should never be left floating. The CMOS inputs must be held at a known state, either VCC or ground, to ensure proper device operation. Refer to Implications of Slow or Floating CMOS Inputs (SCBA004).