Answered

• SN7402: Quad Dual-Input NOR Gate -- inputs are sinking substantial current when a logical high is applied (!?!)

  

  Richard Bonomo

  Resolved

  Part Number: SN7402 The input(s) is(are) sinking substantial current (milliamperes) when a logical high (+5 VDC / Vcc in this case) is applied to the input. My understanding from decades of practice, and from the specification sheet, is that TTL inputs…

  • Resolved

  • over 1 year ago
  • Logic
  • Logic forum

• TXS0108E: TXS0108E does not work with SN7402 chip

  

  Sergiy Kourashev

  TI Thinks Resolved

  Part Number: TXS0108E Other Parts Discussed in Thread: SN7402 We are using the TXS0108E to connect 3.3V logic to 5.0V logic based on SN7402. It does not work. With more than 4 SN7402 inputs VL above 1.2 V. If HP 1670D analyzer connected to TXS0108E…

  • over 7 years ago
  • Logic
  • Logic forum

• Looking for alternative to typical vintage SN7402 xtal oscillator 14.31818 MHz

  

  Martin Ederveen

  Other Parts Discussed in Thread: SN74LV02A Hello, I am looking for an alternative circuit for the typical oscillator circuit that is using a SN7402N with crystal. Can anyone suggest a circuit or modern chip that does the same job? The circuit is from…

  • over 11 years ago
  • Logic
  • Logic forum
Answered

• Looking for alternative to typical vintage SN7402 xtal oscillator 14.31818 MHz

  

  Martin Ederveen

  Resolved

  Hello, I am looking for an alternative circuit for the typical oscillator circuit that is using a SN7402N with crystal. Can anyone suggest a circuit or modern chip that does the same job? The circuit is from a vintage computer:

  • Resolved

  • over 11 years ago
  • Clock & timing
  • Clock & timing forum

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