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參數(shù)資料
| 型號(hào)： | 933670790652 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | HC/UH SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁(yè)數(shù)： | 5/7頁(yè) |
| 文件大?。?/td> | 44K |
| 代理商： | 933670790652 |
December 1990
5
Philips Semiconductors
Product specication
Octal buffer/line driver; 3-state
74HC/HCT244
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr =tf = 6 ns; CL =50pF
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
1An to 1Yn;
2An to 2Yn
30
11
9
110
22
19
145
28
24
165
33
28
ns
2.0
4.5
6.0
Fig.5
tPZH/ tPZL
3-state output enable time
1OE to 1Yn;
2OE to 2Yn
36
13
10
150
30
26
190
38
33
225
45
38
ns
2.0
4.5
6.0
Fig.6
tPHZ/ tPLZ
3-state output disable time
1OE to 1Yn;
2OE to 2Yn
39
14
11
150
30
26
190
38
33
225
45
38
ns
2.0
4.5
6.0
Fig.6
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.5
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