參數(shù)資料
型號： 5962-9855501VPA
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬波形發(fā)生器
英文描述： TIMER, CDIP8
封裝： GREEN, CERAMIC, DIP-8
文件頁數(shù)： 2/18頁
文件大?。?/td> 350K
代理商： 5962-9855501VPA
t =
R + R
C
H
A
B
0.693(
)
t =
R
L
B
0.693 (
) C
period = t + t =
R + R C
H
L
A
B
0.693 (
2
)
frequency
1.44
(
2
)
R + R C
A
B
Output driver duty cycle =
t
L
t + t
H
L
R
B
R + R
A
B
2
=
Output waveform duty cycle =
t
H
t + t
H
L
1 -
R
B
R + R
A
B
2
=
Low-to-high ratio =
t
L
t
H
R
B
R + R
A
B
=
f
Free-Running
Frequency
Hz
C Capacitance
F
100 k
10 k
1 k
100
10
1
100
10
1
0.1
0.01
0.1
0.001
RA + 2 RB = 10 M
RA + 2 RB = 1 M
RA + 2 RB = 100 k
RA + 2 RB = 10 k
RA + 2 RB = 1 k
SGLS401 – FEBRUARY 2010
www.ti.com
Figure 13 shows typical waveforms generated during astable operation. The output high-level duration tH and
low-level duration tL can be calculated as follows:
(1)
(2)
Other useful relationships are shown in the following equations.
(3)
(4)
(5)
(6)
(7)
Figure 15. Free-Running Frequency
10
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): SE555-SP
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