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MC74VHCT244A - Octal Bus Buffer

Key Features

  • High Speed: tPD = 3.8 ns (Typ) at VCC = 5.0 V (VHC) tPD = 5.6 ns (Typ) at VCC = 5.0 V (VHCT).
  • Low Power Dissipation: ICC = 4.0 mA (Max) at TA = 25C.
  • High Noise Immunity: VNIH = VNIL = 28%.
  • Power Down Protection Provided.
  • Balanced Propagation Delays.
  • Designed for: 2.0 V to 5.5 V (VHC) 4.5 V to 5.5 V (VHCT).
  • Low Noise: VOLP = 0.8 V (Max) (VHC) VOLP = 1.1 V (Max) (VHCT).
  • Pin and Function Compatible with Other Standard Logic Families.
  • Latchup Perf.

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DATA SHEET www.onsemi.com Octal Bus Buffer MC74VHC244, MC74VHCT244A The MC74VHC244/MC74VHCT244A is an advanced high speed CMOS octal bus buffer fabricated with silicon gate CMOS technology. The device is a noninverting 3−state buffer, and has two active−low output enables. This device is designed to be used with 3−state memory address drivers, etc. The MC74VHC244 inputs are compatible with standard CMOS levels while the MC74VHCT244A inputs are compatible with TTL levels. The MC74VHCT244A device can be used as a level converter for interfacing 3.3 V to 5.0 V, because it has full 5.0 V CMOS level output swings. The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output.