HEC4512BD Просмотр технического описания (PDF) - Philips Electronics
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HEC4512BD Datasheet PDF : 7 Pages
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Philips Semiconductors
8-input multiplexer with 3-state output
Product specification
HEF4512B
MSI
TRUTH TABLE
INPUTS
EO E
S2
S1
S0
I0
I1
I2
I3
I4
I5
I6
LH
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
X
X
X
X
X
X
L
L
L
L
L
H
X
X
X
X
X
X
L
L
L
L
H
X
L
X
X
X
X
X
L
L
L
L
H
X
H
X
X
X
X
X
L
L
L
H
L
X
X
L
X
X
X
X
L
L
L
H
L
X
X
H
X
X
X
X
L
L
L
H
H
X
X
X
L
X
X
X
L
L
L
H
H
X
X
X
H
X
X
X
L
L
H
L
L
X
X
X
X
L
X
X
L
L
H
L
L
X
X
X
X
H
X
X
L
L
H
L
H
X
X
X
X
X
L
X
L
L
H
L
H
X
X
X
X
X
H
X
L
L
H
H
L
X
X
X
X
X
X
L
L
L
H
H
L
X
X
X
X
X
X
H
L
L
H
H
H
X
X
X
X
X
X
X
L
L
H
H
H
X
X
X
X
X
X
X
HX
X
X
X
X
X
X
X
X
X
X
Notes
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
Z = high impedance OFF-state
OUTPUT
I7
O
X
L
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
X
L
X
H
L
L
H
H
X
Z
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; input transition times ≤ 20 ns
Dynamic power
dissipation per
package (P)
VDD
V
TYPICAL FORMULA FOR P (µW)
5
500 fi + ∑ (foCL) × VDD2
10
2100 fi + ∑ (foCL) × VDD2
15
5800 fi + ∑ (foCL) × VDD2
where
fi = input freq. (MHz)
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
January 1995
4
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