74HC4059 Просмотр технического описания (PDF) - Philips Electronics
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74HC4059 Datasheet PDF : 20 Pages
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Philips Semiconductors
Programmable divide-by-n counter
Product specification
74HC/HCT4059
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
UNIT LOAD COEFFICIENT
CP
0.65
LE
0.65
Jn
0.50
Ka
1.00
Kb
1.50
Kc
0.85
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tPHL/ tPLH
tPHL/ tPLH
tTHL/ tTLH
propagation delay
CP to Q
propagation delay
LE to Q
output transition time
24 46
58
24 46
58
7 15
19
69 ns
69 ns
22 ns
4.5 Fig.7
4.5 Fig.8
4.5 Fig.7
tW
clock pulse width
20 7
25
30
ns 4.5 Fig.7
CP
trem
removal time
Kb, Kc to CP
15 7
9
22
ns 4.5 Fig.9; note 1
fmax
maximum clock pulse
21 36
17
14
MHz 4.5 Fig.7
frequency
Note
1. From master preset mode to any other mode.
1998 Jul 08
10
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