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參數(shù)資料
| 型號(hào)： | 933670020652 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 計(jì)數(shù)器 |
| 英文描述： | HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDIP16 |
| 封裝： | SOT-38-1, DIP-16 |
| 文件頁(yè)數(shù)： | 16/16頁(yè) |
| 文件大?。?/td> | 173K |
| 代理商： | 933670020652 |
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December 1990
9
Philips Semiconductors
Product specication
Presettable synchronous 4-bit binary
counter; synchronous reset
74HC/HCT163
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr =tf = 6 ns; CL =50pF
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
CP to Qn
23
39
49
59
ns
4.5
Fig.8
tPHL/ tPLH
propagation delay
CP to TC
29
49
61
74
ns
4.5
Fig.8
tPHL/ tPLH
propagation delay
CET to TC
17
32
44
48
ns
4.5
Fig.9
tTHL/ tTLH
output transition time
7
15
19
22
ns
4.5
Figs 8 and 9
tW
clock pulse width
HIGH or LOW
20
6
25
30
ns
4.5
Fig.8
tsu
set-up time
MR, Dn to CP
20
9
25
30
ns
4.5
Figs 10 and 11
tsu
set-up time
PE to CP
20
11
25
30
ns
4.5
Fig.10
tsu
set-up time
CEP, CET to CP
40
24
50
60
ns
4.5
Fig.12
th
hold time
Dn, PE, CEP,
CET, MR to CP
0
5
0
ns
4.5
Figs 10, 11 and 12
fmax
maximum clock pulse
frequency
26
45
21
17
MHz
4.5
Fig.8
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