HEF4008 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
HEF4008 Datasheet PDF : 5 Pages
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Philips Semiconductors
4-bit binary full adder
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL
MIN.
TYP. MAX.
Propagation delays
sum in → sum out
HIGH to LOW
LOW to HIGH
sum in → COUT
HIGH to LOW
LOW to HIGH
CIN → sum out
HIGH to LOW
LOW to HIGH
CIN → COUT
HIGH to LOW
LOW to HIGH
Output transition times
HIGH to LOW
LOW to HIGH
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPLH
15
5
10 tTHL
15
5
10 tTLH
15
150 300 ns
55 110 ns
40 80 ns
135 270 ns
55 110 ns
40 80 ns
125 250 ns
50 100 ns
35 70 ns
100 200 ns
45 90 ns
30 60 ns
130 260 ns
50 100 ns
35 70 ns
115 230 ns
50 100 ns
35 70 ns
90 180 ns
35 70 ns
25 50 ns
75 150 ns
35 70 ns
25 50 ns
60 120 ns
30 60 ns
20 40 ns
60 120 ns
30 60 ns
20 40 ns
Product specification
HEF4008B
MSI
TYPICAL EXTRAPOLATION
FORMULA
123 ns + (0,55 ns/pF) CL
44 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
108 ns + (0,55 ns/pF) CL
44 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
98 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
73 ns + (0,55 ns/pF) CL
34 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
103 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
88 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
63 ns + (0,55 ns/pF) CL
24 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
48 ns + (0,55 ns/pF) CL
24 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
January 1995
4
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