74HCT4020N Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
74HCT4020N Datasheet PDF : 7 Pages
| |||
Philips Semiconductors
14-stage binary ripple counter
Product specification
74HC/HCT4020
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
CP
MR
UNIT LOAD COEFFICIENT
0.85
1.10
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL
PARAMETER
min.
+25
typ.
74HCT
−40 to +85
max. min. max.
−40 to +125
min. max.
UNIT VCC
(V)
WAVEFORMS
tPHL/ tPLH
tPHL/ tPLH
tPHL
tTHL/ tTLH
propagation delay
CP to Q0
propagation delay
Qn to Qn+1
propagation delay
MR to Qn
output transition time
18 36
45
8 15
19
22 45
56
7 15
19
54 ns 4.5 Fig.7
22 ns 4.5 Fig.7
68 ns 4.5 Fig.8
22 ns 4.5 Fig.7
tW
clock pulse width
20 7
HIGH or LOW
tW
master reset pulse width 20 8
HIGH
trem
removal time
MR to CP
10 2
fmax
maximum clock pulse 25 47
frequency
25
30
25
30
13
15
20
17
ns 4.5 Fig.7
ns 4.5 Fig.8
ns 4.5 Fig.8
MHz 4.5 Fig.7
September 1993
6
Share Link: 