HEF4020BTD データシートの表示（PDF） - Philips Electronics
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HEF4020BTD Datasheet PDF : 6 Pages
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Philips Semiconductors
14-stage binary counter
Product specification
HEF4020B
MSI
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns; see also waveforms Fig.4
VDD
V
SYMBOL MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
CP → Ο0
HIGH to LOW
LOW to HIGH
On → On + 1
HIGH to LOW
LOW to HIGH
MR → On
HIGH to LOW
Output transition times
HIGH to LOW
LOW to HIGH
Minimum clock
pulse width; HIGH
Minimum MR
pulse width; HIGH
Recovery time
for MR
Maximum clock
pulse frequency
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tTHL
15
5
10 tTLH
15
5
10 tWCPH
15
5
10 tWMRH
15
5
10 tRMR
15
5
10 fmax
15
105
45
30
105
50
35
80
30
20
70
25
20
180
90
70
60
30
20
60
30
20
50
25
25
15
20
10
130
65
95
50
90
45
115
60
65
35
55
25
5
10
13
25
18
35
210 ns
90 ns
65 ns
210 ns
95 ns
70 ns
160 ns
60 ns
40 ns
140 ns
50 ns
40 ns
360 ns
180 ns
140 ns
120 ns
60 ns
40 ns
120 ns
60 ns
40 ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
MHz
MHz
78 ns + (0,55 ns/pF) CL
34 ns + (0,23 ns/pF) CL
22 ns + (0,16 ns/pF) CL
78 ns + (0,55 ns/pF) CL
39 ns + (0,23 ns/pF) CL
27 ns + (0,16 ns/pF) CL
53 ns + (0,55 ns/pF) CL
19 ns + (0,23 ns/pF) CL
12 ns + (0,16 ns/pF) CL
43 ns + (0,55 ns/pF) CL
14 ns + (0,23 ns/pF) CL
12 ns + (0,16 ns/pF) CL
153 ns + (0,55 ns/pF) CL
79 ns + (0,23 ns/pF) CL
62 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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