Philips Semiconductors
Product specification
Programmable divide-by-n counter
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
LE
Jn
0.65
0.65
0.50
1.00
1.50
0.85
Ka
Kb
Kc
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
74HCT
SYMBOL PARAMETER
UNIT
WAVEFORMS
VCC
(V)
+25
−40 to +85 −40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
CP to Q
24
24
7
46
46
15
58
58
19
69
69
22
ns
ns
ns
ns
ns
4.5
4.5
4.5
4.5
4.5
Fig.7
t
PHL/ tPLH propagation delay
LE to Q
Fig.8
tTHL/ tTLH output transition time
Fig.7
tW
clock pulse width
CP
20
15
21
7
25
9
30
22
14
Fig.7
trem
fmax
removal time
Kb, Kc to CP
7
Fig.9; note 1
Fig.7
maximum clock pulse
frequency
36
17
MHz 4.5
Note
1. From master preset mode to any other mode.
1998 Jul 08
10
NXP [ NXP ]
