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参数资料
| 型号： | JM38510 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT TRIGGER INPUTS |
| 中文描述： | 施密特触发输入与双单稳态多频振荡器 |
| 文件页数： | 22/23页 |
| 文件大小： | 620K |
| 代理商： | JM38510 |
SN54221, SN54LS221, SN74221, SN74LS221
DUAL MONOSTABLE MULTIVIBRATORS
WITH SCHMITT TRIGGER INPUTS
SDLS213B DECEMBER 1983 REVISED NOVEMBER 2004
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LS221
SN74LS221
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VT+
Positive-going threshold voltage,
B input
VCC = MIN
1
2*
1
2
V
VT
Negative-going threshold voltage,
B input
VCC = MIN
0.7*
0.9
0.8
0.9
V
VIK
VCC = MIN,
II = 18 mA
1.5
V
VOH
VCC = MIN,
IOH = 400 A
2.5
3.4
2.7
3.4
V
VOL
VCC = MIN
IOL = 4 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = MIN
IOL = 8 mA
0.35
0.5
V
II
VCC = MAX,
VI = 7 V
0.1
mA
IIH
VCC = MAX,
VI = 2.7 V
20
A
IIL
A input
VCC = MAX,
VI = 0.4 V
0.4
mA
IIL
CLR, B input
VCC = MAX,
VI = 0.4 V
0.8
mA
IOS§
VCC = MAX
20
100
20
100
mA
ICC
Quiescent
VCC = MAX
4.7
11
4.7
11
mA
ICC
Triggered
VCC = MAX
19
27*
19
27
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
SN54LS221
SN74LS221
UNIT
MIN
MAX
MIN
MAX
UNIT
tw
Pulse duration
A or B
50
ns
tw
Pulse duration
CLR
40
ns
tsu
Setup time, inactive state
CLR
15
ns
Rext
External timing resistance
1.4*
70*
1.4
100
k
Cext
External timing capacitance
0*
1000*
0
1000
F
Output duty cycle
RT = 2 k
50%
Output duty cycle
RT = 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 |
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| JM38510/00101BAD | 制造商:National Semiconductor Corporation 功能描述: 制造商:Texas Instruments 功能描述: |
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