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参数资料
| 型号： | SN74LS221DBRG4 |
| 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, SSOP-16 |
| 文件页数： | 23/26页 |
| 文件大小： | 818K |
| 代理商： | SN74LS221DBRG4 |
SN54221, SN54LS221, SN74221, SN74LS221
DUAL MONOSTABLE MULTIVIBRATORS
WITH SCHMITT TRIGGER INPUTS
SDLS213B DECEMBER 1983 REVISED NOVEMBER 2004
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54221
SN74221
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VT+
Positive-going threshold voltage,
B input
VCC = MIN
1.55
2*
1.55
2
V
VT
Negative-going threshold voltage,
B input
VCC = MIN
0.8*
1.35
0.8
1.35
V
VIK
VCC = MIN,
II = 12 mA
1.5
V
VOH
VCC = MIN,
IOH = 800 A
2.4
3.4
2.4
3.4
V
VOL
VCC = MIN,
IOL = 16 mA
0.2
0.4
0.2
0.4
V
II
VCC = MAX,
VI = 5.5 V
1
mA
IIH
A input
VCC = MAX,
VI = 2.4 V
40
A
IIH
CLR, B input
VCC = MAX,
VI = 2.4 V
80
A
IIL
A input
VCC = MAX,
VI = 0.4 V
1.6
mA
IIL
CLR, B input
VCC = MAX,
VI = 0.4 V
3.2
mA
IOS§
VCC = MAX
20
55
18
55
mA
ICC
Quiescent
VCC = MAX
26
50*
26
50
mA
ICC
Triggered
VCC = MAX
46
80*
46
80
mA
On products compliant to MIL-PRF-38535, this parameter is not production tested.
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature
SN54221
SN74221
UNIT
MIN
MAX
MIN
MAX
UNIT
tw
Pulse duration
A or B input
50
ns
tw
Pulse duration
CLR
20
ns
tsu
Setup time, inactive-state
CLR
15
ns
Rext
External timing resistance
1.4*
30*
1.4
40
k
Cext
External timing capacitance
0*
1000*
0
1000
F
Output duty cycle
Rext = 2 k
67%
Output duty cycle
Rext = MAX Rext
90%
On products compliant to MIL-PRF-38535, this parameter is not production tested.
Inactive-state setup time also is referred to as recovery time.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS221DE4 | 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 |
| SN74LS221DG4 | 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 |
| 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 |
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