Philips Semiconductors
HEX inverting buffers
Product specification
HEF4049B
buffers
Dynamic power
dissipation per
package (P)
VDD
V
TYPICAL FORMULA FOR P (µW)
5
2 500 fi + ∑ (foCL) × VDD2
where
10
11 000 fi + ∑ (foCL) × VDD2
fi = input freq. (MHz)
15
35 000 fi + ∑ (foCL) × VDD2
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
January 1995
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