hef4526b NXP Semiconductors, hef4526b Datasheet - Page 6

• Manufacturer Part Number: hef4526b
• Description: Programmable 4-bit Binary Down Counter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
V
AC CHARACTERISTICS
V
January 1995
Dynamic power
Propagation delays
Output transition times
SS
SS
Programmable 4-bit binary down counter
dissipation per
package (P)
CP
CP
PL
MR
= 0 V; T
= 0 V; T
HIGH to LOW
LOW to HIGH
HIGH to LOW
LOW to HIGH
HIGH to LOW
LOW to HIGH
HIGH to LOW
HIGH to LOW
LOW to HIGH
0
0
, CP
, CP
O
O
n
1
1
n
amb
amb
O
TC
= 25 C; input transition times
= 25 C; C
n
L
= 50 pF; input transition times
V
V
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
V
V
DD
DD
5
5
5
5
5
5
5
5
5
5
t
t
t
t
t
t
t
t
t
SYMBOL
PHL
PLH
PHL
PLH
PHL
PLH
PHL
THL
TLH
TYPICAL FORMULA FOR P ( W)
10 000 f
20 ns
1000 f
4000 f
MIN.
i
i
i
6
20 ns
(f
(f
(f
o
o
o
TYP. MAX.
C
C
C
150
150
210
210
200
180
140
L
L
L
65
50
65
50
90
70
90
70
80
60
70
50
55
40
60
30
20
60
30
20
)
)
)
V
V
V
DD
DD
DD
300
130
100
300
130
100
420
180
140
420
180
140
400
160
120
360
140
100
280
120
120
110
2
2
2
80
60
40
60
40
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
where
f
f
C
V
i
o
DD
= input freq. (MHz)
L
= output freq. (MHz)
(f
= load capacitance (pF)
o
C
= supply voltage (V)
TYPICAL EXTRAPOLATION
L
123 ns
123 ns
183 ns
183 ns
173 ns
153 ns
) = sum of outputs
113 ns
54 ns
42 ns
54 ns
42 ns
79 ns
62 ns
79 ns
62 ns
69 ns
52 ns
59 ns
42 ns
44 ns
32 ns
10 ns
10 ns
9 ns
6 ns
9 ns
6 ns
FORMULA
Product specification
HEF4526B
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(1,0 ns/pF) C
(0,42 ns/pF) C
(0,28 ns/pF) C
(1,0 ns/pF) C
(0,42 ns/pF) C
(0,28 ns/pF) C
MSI
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L