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参数资料
| 型号： | SN74LS221DG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 谐振器 |
| 英文描述： | LS SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16 |
| 封装： | GREEN, PLASTIC, MS-012AC, SOIC-16 |
| 文件页数： | 5/26页 |
| 文件大小： | 818K |
| 代理商： | SN74LS221DG4 |
SN54221, SN54LS221, SN74221, SN74LS221
DUAL MONOSTABLE MULTIVIBRATORS
WITH SCHMITT TRIGGER INPUTS
SDLS213B DECEMBER 1983 REVISED NOVEMBER 2004
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS (SN54/74221 ONLY)
Figure 3
Median
Relative
Frequency
of
Occurrence
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
V
ariation
in
Output
Pulse
%
t 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
025
50
V
ariation
in
Output
Pulse
%
0.5
VARIATION IN OUTPUT PULSE
vs
FREE-AIR TEMPERATURE
1
75
100
125
TA Free-Air Temperature °C
t w
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
12
4
7 10
10 ms
1 ms
20
40
70 100
Output
Pulse
t w
100
s
10
s
1
s
VCC = 5 V
TA = 25°C
F
Cext = 1
F
Cext = 0.1
F
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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| SN74LS221DR | 功能描述:单稳态多谐振荡器 Dual Mono RoHS:否 制造商:Texas Instruments 每芯片元件:1 逻辑系列:LVC 逻辑类型:Monostable Multivibrator 封装 / 箱体:SSOP-8 传播延迟时间:18.6 ns 高电平输出电流:- 32 mA 低电平输出电流:32 mA 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| SN74LS221DRE4 | 功能描述:单稳态多谐振荡器 Dual w/Schmitt-trgr inputs RoHS:否 制造商:Texas Instruments 每芯片元件:1 逻辑系列:LVC 逻辑类型:Monostable Multivibrator 封装 / 箱体:SSOP-8 传播延迟时间:18.6 ns 高电平输出电流:- 32 mA 低电平输出电流:32 mA 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| SN74LS221DRG4 | 功能描述:单稳态多谐振荡器 Dual 单稳态多谐振荡器s RoHS:否 制造商:Texas Instruments 每芯片元件:1 逻辑系列:LVC 逻辑类型:Monostable Multivibrator 封装 / 箱体:SSOP-8 传播延迟时间:18.6 ns 高电平输出电流:- 32 mA 低电平输出电流:32 mA 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| SN74LS221J | 制造商:ONS 功能描述:ON SEMICONDUCTOR NXC7D |
| SN74LS221JD | 制造商:Motorola Inc 功能描述: |
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