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参数资料
| 型号： | 933714120653 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 计数器 |
| 英文描述： | HCT SERIES, ASYN NEGATIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO14 |
| 封装： | SOT-108-1, SO-14 |
| 文件页数： | 8/11页 |
| 文件大小： | 135K |
| 代理商： | 933714120653 |
December 1990
6
Philips Semiconductors
Product specication
Dual 4-bit binary ripple counter
74HC/HCT393
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 (
I
CC) 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.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
INPUT
UNIT LOAD COEFFICIENT
1CP
2CP
1MR
2MR
0.4
1.0
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT
VCC
(V)
WAVEFORMS
+25
40 to +85 40 to +125
min.
typ.
max. min. max. min.
max.
tPHL/ tPLH propagation delay
nCP to nQ0
15
25
31
38
ns
4.5
Fig.7
tPHL/ tPLH propagation delay
nQn to nQn+1
6
10
13
15
ns
4.5
Fig.7
tPHL
propagation delay
nMR to nQn
18
32
40
48
ns
4.5
Fig.8
tTHL/ tTLH
output transition time
7
15
19
22
ns
4.5
Fig.7
tW
clock pulse width
HIGH or LOW
19
11
24
29
ns
4.5
Fig.7
tW
master reset pulse
width; HIGH
16
6
20
24
ns
4.5
Fig.8
trem
removal time
nMR to nCP
5
0
5
ns
4.5
Fig.8
fmax
maximum clock pulse
frequency
27
48
22
18
MHz
4.5
Fig.7
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