HEF4521BT NXP Semiconductors, HEF4521BT Datasheet - Page 6

• Manufacturer Part Number: HEF4521BT
• Description: IC, 4000 LOCMOS, SMD, 4521, SOIC16
• Manufacturer: NXP Semiconductors

Specifications of HEF4521BT

• Clock Frequency: 35MHz
• Count Maximum: 24
• Supply Voltage Range: 4.5V To 15.5V
• Logic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Package /: RoHS Compliant
• Base Number: 4521
• Rohs Compliant: Yes

Philips Semiconductors
AC CHARACTERISTICS
V
January 1995
Output transition times
Minimum I
Minimum MR
Recovery time
Maximum clock
Dynamic power
SS
24-stage frequency divider and oscillator
width; HIGH
pulse width; HIGH
for MR
pulse frequency
dissipation per
package (P)
= 0 V; T
HIGH to LOW
LOW to HIGH
2
amb
pulse
= 25 C; C
L
= 50 pF; input transition times
V
V
V
DD
10
15
10
15
V
10
15
10
15
10
15
10
15
DD
5
5
5
5
5
5
V
V
10
15
DD
5
t
t
THL
TLH
SYMBOL
t
t
t
f
WI2H
WMRH
RMR
max
SYMBOL
13 050 f
TYPICAL FORMULA FOR P ( W)
1 200 f
5 100 f
i
i
i
MIN.
MIN.
(f
(f
(f
80
40
30
70
40
30
20
15
15
12
17
o
o
o
6
C
C
C
6
L
L
L
20 ns
)
)
)
TYP.
TYP.
V
V
V
20
60
20
60
30
30
40
20
15
35
20
15
10
12
25
35
DD
DD
DD
5
0
2
2
2
MAX.
MAX.
120
120
60
40
60
40
MHz
MHz
MHz
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)
L
) = sum of outputs
10 ns
10 ns
see also waveforms
Fig.5
9 ns
6 ns
9 ns
6 ns
EXTRAPOLATION
FORMULA
Product specification
TYPICAL
HEF4521B
(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