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參數(shù)資料
| 型號(hào)： | 933967980118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | HCT SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SO-20 |
| 文件頁(yè)數(shù)： | 5/7頁(yè) |
| 文件大?。?/td> | 53K |
| 代理商： | 933967980118 |
December 1990
5
Philips Semiconductors
Product specication
Octal Schmitt trigger buffer/line driver; 3-state
74HC/HCT7541
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Transfer characteristics are given below (not applicable for OEn inputs).
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr =tf = 6 ns; CL = 50 pF
TRANSFER CHARACTERISTICS FOR 74HC
Voltages are referred to GND (ground = 0 V)
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
40 to +85 40 to +125
min. typ. max.
min.
max.
min.
max.
tPHL/ tPLH
propagation delay
An to Yn
39
14
11
120
24
20
150
30
26
180
36
32
ns
2.0
4.5
6.0
Fig.8
tPZH/ tPZL
3-state output enable time
OEn to Yn
44
16
13
160
32
27
200
40
34
240
48
41
ns
2.0
4.5
6.0
Fig.8
tPHZ/ tPLZ
3-state output disable time
OEn to Yn
58
21
17
160
32
27
200
40
34
240
48
41
ns
2.0
4.5
6.0
Fig.8
tTHL/ tTLH
output transition time
14
5
4
60
12
10
75
15
13
90
18
15
ns
2.0
4.5
6.0
Fig.8
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
40 to +85 40 to +125
min.
typ.
max. min.
max.
min. max.
VT+
positive-going threshold
1.50
3.15
4.20
1.50
3.15
4.20
1.50
3.15
4.20
V
2.0
4.5
6.0
Figs 6 and 7
VT
negative-going threshold
0.30
1.35
1.80
0.30
1.35
1.80
0.30
1.35
1.80
V
2.0
4.5
6.0
Figs 6 and 7
VH
hysteresis (VT+ VT)
0.10
0.25
0.30
0.20
0.40
0.50
0.10
0.25
0.30
0.10
0.25
0.30
V
2.0
4.5
6.0
Figs 6 and 7
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