Philips Semiconductors
Product specification
HEF4050B
buffers
HEX non-inverting buffers
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
TYPICAL EXTRAPOLATION
FORMULA
SYMBOL
TYP.
MAX.
Propagation delays
5
35
20
15
55
25
20
25
10
7
70
35
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
26 ns + (0,18 ns/pF) CL
16 ns + (0,08 ns/pF) CL
12 ns + (0,05 ns/pF) CL
28 ns + (0,55 ns/pF) CL
14 ns + (0,23 ns/pF) CL
12 ns + (0,16 ns/pF) CL
7 ns + (0,35 ns/pF) CL
3 ns + (0,14 ns/pF) CL
2 ns + (0,09 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
In
On
10
15
5
tPHL
HIGH to LOW
30
110
55
LOW to HIGH
10
15
5
tPLH
tTHL
tTLH
40
Output transition
times
50
10
15
5
20
HIGH to LOW
14
60
30
20
120
60
LOW to HIGH
10
15
40
VDD
V
TYPICAL FORMULA FOR P (µW)
2
Dynamic power
dissipation per
package (P)
5
10
15
3 800 fi + ∑ (foCL) × VDD
where
2
11 600 fi + ∑ (foCL) × VDD
fi = input freq. (MHz)
2
65 900 fi + ∑ (foCL) × VDD
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
January 1995
4