HEF4022B 데이터 시트보기 (PDF) - Philips Electronics
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HEF4022B Datasheet PDF : 8 Pages
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Philips Semiconductors
4-stage divide-by-8 Johnson counter
Product specification
HEF4022B
MSI
FUNCTION TABLE
MR
CP0
CP1
H
X
X
L
H
L
L
L
L
X
L
X
H
L
H
L
L
OPERATION
O0 = O4-7 = H; O1 to O7 = L
Counter advances
Counter advances
No change
No change
No change
No change
Notes
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
= positive-going transition
= negative-going transition
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP.
MAX.
Propagation delays
CP0, CP1 → On
HIGH to LOW
LOW to HIGH
CP0, CP1 → O4-7
HIGH to LOW
LOW to HIGH
MR → O1 to O7
HIGH to LOW
MR → O0
LOW to HIGH
MR → O4-7
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 tPLH
15
5
10 tTHL
15
5
10 tTLH
15
195
390 ns
75
145 ns
50
100 ns
245
485 ns
95
195 ns
60
125 ns
245
485 ns
90
185 ns
60
120 ns
190
380 ns
75
145 ns
50
105 ns
130
260 ns
55
105 ns
40
75 ns
130
260 ns
55
105 ns
40
75 ns
110
220 ns
45
90 ns
35
70 ns
60
120 ns
30
60 ns
20
40 ns
60
120 ns
30
60 ns
20
40 ns
January 1995
4
TYPICAL EXTRAPOLATION
FORMULA
168 ns + (0,55 ns/pF) CL
64 ns + (0,23 ns/pF) CL
42 ns + (0,16 ns/pF) CL
218 ns + (0,55 ns/pF) CL
84 ns + (0,23 ns/pF) CL
52 ns + (0,16 ns/pF) CL
218 ns + (0,55 ns/pF) CL
79 ns + (0,23 ns/pF) CL
52 ns + (0,16 ns/pF) CL
163 ns + (0,55 ns/pF) CL
64 ns + (0,23 ns/pF) CL
42 ns + (0,16 ns/pF) CL
103 ns + (0,55 ns/pF) CL
44 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
103 ns + (0,55 ns/pF) CL
44 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
83 ns + (0,55 ns/pF) CL
34 ns + (0,23 ns/pF) CL
27 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
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