Philips Semiconductors
4-bit binary full adder
Product specification
HEF4008B
MSI
VDD
V
Dynamic power
5
dissipation per
10
package (P)
15
APPLICATION INFORMATION
TYPICAL FORMULA FOR P (µW)
1 500 fi + ∑ (foCL) × VDD2
6 000 fi + ∑ (foCL) × VDD2
13 500 fi + ∑ (foCL) × VDD2
where
fi = input freq. (MHz)
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
Fig.4 Example of a 16-bit full adder using 4 HEF4008B ICs.
January 1995
5