Answered

• SN74LVC139A: Vcc input time

  

  cafain

  Resolved

  Part Number: SN74LVC139A HI, Staff Is there a limit to the power startup time for Vcc? Please let me know if there is a recommended startup time for Vcc. best regards cafain

  • Resolved

  • over 2 years ago
  • Logic
  • Logic forum
Answered

• SN74LVC139A: 139A-YO Drive capacity

  

  cafain

  Resolved

  Part Number: SN74LVC139A Other Parts Discussed in Thread: SN74LVC244A HI, Staff 1Y0 (4pin) of SN74LVC139A controls 1OE and 2OE of two SN74LVC244A. 1Y0 → Device1-1OE and 2OE　＋　Device2-1OE and 2OE Is there a problem with this connection? Since the OE…

  • Resolved

  • over 2 years ago
  • Logic
  • Logic forum

• RE: SN74HCS139: Voltage output level when not supplied

  

  Clemens Ladisch

  When powered off, 0 V is the only allowed input voltage. Consider the SN74AHC139, SN74LV139A, or SN74LVC139A, which have overvoltage-tolerant inputs.

  • 3 months ago
  • Logic
  • Logic forum
Answered

• RE: SN74LVC1G139: Looking for similar device that the temperature range are -40'C ~ 125'C

  

  Clemens Ladisch

  Resolved

  There appears to be no single-gate device. SN74AHC139 or SN74LVC139A-Q1 are dual-gate devices.

  • over 4 years ago
  • Logic
  • Logic forum
Answered

• RE: Looking for a 1:3 SPI Multiplexer

  

  Clemens Ladisch

  Resolved

  There is no dedicated SPI switch. If you'd wanted a digital device, you would have to use a decoder like the SN74LVC139A, but at 1.8 V, it's probably too slow. Digital signals can be handled just fine with analog switches, and the direct connection…

  • over 4 years ago
  • Switches & multiplexers
  • Switches & multiplexers forum

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