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CD74HC4049E CD74HC4049 74HC4049 High Speed CMOS Logic Hex Inverting Buffers (Pack of 10)

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  • Typical Propagation Delay: 6ns at VCC = 5V, CL = 15pF, TA = 25oC
  • High-to-Low Voltage Level Converter for up to Vl = 16V
  • Fanout (Over Temperature Range) - Standard Outputs 10 LSTTL Loads, Bus Driver Outputs 15 LSTTL Loads
  • Balanced Propagation Delay and Transition Times
  • Significant Power Reduction Compared to LSTTL Logic ICs


The CD74HC4049 are fabricated with high-speed silicon gate technology. They have a modified input protection structure that enables these parts to be used as logic level translators which convert high-level logic to a low level logic while operating off the low-level logic supply. For example, 15-V input pulse levels can be down-converted to 0-V to 5-V logic levels.
The modified input protection structure protects the input from negative electrostatic discharge. These parts also can be used as simple buffers or inverters without level translation. The CD74HC4049 are enhanced versions of equivalent CMOS types.