參數(shù)資料
型號: SN74LSLS221
廠商: Texas Instruments, Inc.
英文描述: DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT TRIGGER INPUTS
中文描述: 施密特觸發(fā)輸入與雙單穩(wěn)態(tài)多頻振蕩器
文件頁數(shù): 13/23頁
文件大小: 620K
代理商: SN74LSLS221
SDLS213B DECEMBER 1983 REVISED NOVEMBER 2004
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS (SN54/74221 ONLY)
Figure 3
Median
R
DISTRIBUTION OF UNITS
FOR
OUTPUT PULSE
tw Output Pulse
VCC = 5 V
TA = 25
°
C
Median
+0.5%
Median
+0.5%
Figure 4
0
0.5
1
4.5
4.75
5
0.5
VARIATION IN OUTPUT PULSE
vs
SUPPLY VOLTAGE
1
5.25
5.5
w
VCC Supply Voltage V
Cext = 60 pF
Rext = 10 k
TA = 25
°
C
tw
420 ns
at VCC = 5 V
Figure 5
25
50
75
0
0.5
1
0
25
50
w
0.5
VARIATION IN OUTPUT PULSE
vs
FREE-AIR TEMPERATURE
1
75
100
125
TA Free-Air Temperature
°
C
VCC = 5 V
Cext = 60 pF
Rext = 10 k
tw
420 ns
at TA = 25
°
C
OUTPUT PULSE
vs
TIMING RESISTOR VALUE
Figure 6
100 ns
10 ns
1
2
4
7 10
10 ms
1 ms
20
40
70 100
t
w
100
μ
s
10
μ
s
1
μ
s
VCC = 5 V
TA = 25
°
C
F
μ
Cext= 1
F
μ
Cext= 0.1
F
μ
Cext= 0.01
Cext= 1000 pF
Cext= 100 pF
Cext= 10 pF
See Note A
Rext Timing Resistor Value k
Data for temperatures below 0
°
C and above 70
°
C, and for supply voltages below 4.75 V and above 5.25 V are applicable for the SN54221 only.
NOTE A: These values of resistance exceed the maximum recommended for use over the full military temperature range of the SN54221.
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