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
Description
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.