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參數(shù)資料
| 型號： | 933670710652 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | HC/UH SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大小： | 46K |
| 代理商： | 933670710652 |
March 1988
4
Philips Semiconductors
Product specication
Octal bus transceiver; 3-state; inverting
74HC/HCT640
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
An to Bn;
Bn to An
30
11
9
90
18
15
115
23
20
135
27
23
ns
2.0
4.5
6.0
Fig.5
tPZH/ tPZL
3-state output enable time
OE, DIR to An;
OE, DIR to Bn
44
16
13
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
OE, DIR to An;
OE, DIR to Bn
50
18
14
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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