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HEF4021B Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. HEF4021B
Description  8-bit static shift register
Download  6 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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HEF4021B Datasheet(HTML) 4 Page - NXP Semiconductors

   
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January 1995
4
Philips Semiconductors
Product specification
8-bit static shift register
HEF4021B
MSI
FUNCTION TABLES
Serial operation
INPUTS
OUTPUTS
nCP
DS
PL
O5
O6
O7
1D1
LX
X
X
2D2
LX
X
X
3D3
LX
X
X
6X
L
D1
XX
7X
L
D2
D1
X
8X
L
D3
D2
D1
X
L
no change
Parallel operation
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
Dn = either HIGH or LOW
n = number of clock pulse transitions
INPUTS
OUTPUTS
nCP
DS
PL
O5
O6
O7
XX
H
P5
P6
P7
AC CHARACTERISTICS
VSS = 0 V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
CP
→ On
5
125
250
ns
98 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
55
110
ns
44 ns
+ (0,23 ns/pF) CL
15
40
80
ns
32 ns
+ (0,16 ns/pF) CL
5
115
230
ns
88 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
50
100
ns
39 ns
+ (0,23 ns/pF) CL
15
40
80
ns
32 ns
+ (0,16 ns/pF) CL
PL
→ On
5
120
240
ns
93 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
55
110
ns
44 ns
+ (0,23 ns/pF) CL
15
40
80
ns
32 ns
+ (0,16 ns/pF) CL
5
105
210
ns
78 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
50
100
ns
39 ns
+ (0,23 ns/pF) CL
15
40
80
ns
32 ns
+ (0,16 ns/pF) CL
Output transition
5
60
120
ns
10 ns
+ (1,0 ns/pF) CL
times
10
tTHL
30
60
ns
9 ns
+ (0,42 ns/pF) CL
HIGH to LOW
15
20
40
ns
6 ns
+ (0,28 ns/pF) CL
5
60
120
ns
10 ns
+ (1,0 ns/pF) CL
LOW to HIGH
10
tTLH
30
60
ns
9 ns
+ (0,42 ns/pF) CL
15
20
40
ns
6 ns
+ (0,28 ns/pF) CL


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