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HEF4526B Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. HEF4526B
Description  Programmable 4-bit binary down counter
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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HEF4526B Datasheet(HTML) 6 Page - NXP Semiconductors

 
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January 1995
6
Philips Semiconductors
Product specification
Programmable 4-bit binary down counter
HEF4526B
MSI
AC CHARACTERISTICS
VSS = 0 V; Tamb =25 °C; input transition times ≤ 20 ns
AC CHARACTERISTICS
VSS =0V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
TYPICAL FORMULA FOR P (
µW)
Dynamic power
5
1000 fi +∑ (foCL) × VDD2
where
dissipation per
10
4000 fi +∑ (foCL) × VDD2
fi = input freq. (MHz)
package (P)
15
10 000 fi +∑ (foCL) × VDD2
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (f
oCL) = sum of outputs
VDD = supply voltage (V)
VDD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
CP0, CP1 → On
5
150
300
ns
123 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
65
130
ns
54 ns
+ (0,23 ns/pF) CL
15
50
100
ns
42 ns
+ (0,16 ns/pF) CL
5
150
300
ns
123 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
65
130
ns
54 ns
+ (0,23 ns/pF) CL
15
50
100
ns
42 ns
+ (0,16 ns/pF) CL
CP0, CP1 → TC
5
210
420
ns
183 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
90
180
ns
79 ns
+ (0,23 ns/pF) CL
15
70
140
ns
62 ns
+ (0,16 ns/pF) CL
5
210
420
ns
183 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
90
180
ns
79 ns
+ (0,23 ns/pF) CL
15
70
140
ns
62 ns
+ (0,16 ns/pF) CL
PL
→ On
5
200
400
ns
173 ns
+ (0,55 ns/pF) CL
HIGH to LOW
10
tPHL
80
160
ns
69 ns
+ (0,23 ns/pF) CL
15
60
120
ns
52 ns
+ (0,16 ns/pF) CL
5
180
360
ns
153 ns
+ (0,55 ns/pF) CL
LOW to HIGH
10
tPLH
70
140
ns
59 ns
+ (0,23 ns/pF) CL
15
50
100
ns
42 ns
+ (0,16 ns/pF) CL
MR
→ On
5
140
280
ns
113 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
Output transition times
5
60
120
ns
10 ns
+ (1,0 ns/pF) CL
HIGH to LOW
10
tTHL
30
60
ns
9 ns
+ (0,42 ns/pF) CL
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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