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74HCT540 Datasheet(数据表) 5 Page - NXP Semiconductors

部件型号  74HCT540
说明  Octal buffer/line driver; 3-state inverting
下载  7 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 

   
 5 page
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December 1990
5
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state; inverting
74HC/HCT540
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 = 50 pF
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
30
11
9
100
20
17
125
25
21
150
30
26
ns
2.0
4.5
6.0
Fig.6
tPZH/ tPZL
3-state output
enable time
OE to Yn
52
19
15
160
32
27
200
40
34
240
48
41
ns
2.0
4.5
6.0
Fig.7
tPHZ/ tPLZ
3-state output
disable time
OE to Yn
61
22
18
160
32
27
200
40
34
240
48
41
ns
2.0
4.5
6.0
Fig.7
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.6




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