【圖】74HC14中文資料
(2024/2/4 7:00:00)
74HC14中文資料
74HC14中文資料
Recommended Operating Conditions建議操作條件
74HC14中文資料
74HC14的作用：六反相斯密特觸發(fā)器
74HC14引腳圖:
圖1 引腳功能
74HC14真值表:
真值表：Y=A
Input輸入
| output輸出
|
A
| Y
|
L
| H
|
H
| L
|
74HC14電氣參數(shù):
極限參數(shù)：
Supply Voltage 電源電壓
| 7V
|
Input Voltage輸入電壓
| 7V
|
Operating Free Air Temperature Range自由空氣溫度范圍
| 0℃ to +70℃
|
Storage Temperature Range儲存溫度范圍
| -65℃ to +150℃
|
Recommended Operating Conditions建議操作條件
Symbol 符號
| Parameter 參數(shù)
| 最小
| 典型
| 最大
| UNIT 單位
|
VCC
| Supply Voltage 電源電壓
| 4.75
| 5
| 5.25
| V
|
VT+
| Positive-Going Input Threshold Voltage 正向輸入閾值電壓(Note 2)
| 1.4
| 1.6
| 1.9
| V
|
VT-
| Negative-Going Input Threshold Voltage 反向輸入閾值電壓(Note 2)
| 0.5
| 0.8
| 1
| V
|
HYS
| Input Hysteresis 輸入滯后(Note 2)
| 0.4
| 0.8
| -
| V
|
IOH
| HIGH Level Output Current高電平輸出電流
| -
| -
| -0.4
| mA
|
IOL
| LOW Level Output Current低電平輸出電流
| -
| -
| 8
| mA
|
TA
| Free Air Operating Temperature工作溫度
| 0
| -
| 70
| ℃
|
Note 2: VCC = 5V.
| |||||
Electrical Characteristics 電氣特性
| ||||||
over recommended operating free air temperature range (unless otherwise noted)
| ||||||
Symbol 符號
| Parameter 參數(shù)
| Conditions 條件
| 最小
| 典型
| 最大
| UNIT 單位
|
VI
| Input Clamp Voltage輸入鉗位電壓
| VCC = 最小, II = -18mA
| -
| -
| -1.5
| V
|
VOH
| HIGH Level Output Voltage輸出高電平電壓
| VCC=最小,IOH=最大 VIL=最大
| 2.7
| 3.4
| -
| V
|
VOL
| LOW Level輸出低電平電壓
| VCC = 最小, IOL = 最大
| -
| 0.35
| 0.5
| -
|
-
| Output Voltage輸出電壓
| VIH = 最小
| -
| -
| -
| V
|
VCC = 最小, IOL = 4mA
| -
| 0.25
| 0.4
| |||
IT+
| Input Current at Positive-Going Threshold 正向閾值輸入電流
| VCC = 5V, VI = VT+
| -
| -0.14
| -
| mA
|
IT-
| Input Current at Negative-Going Threshold反向閾值輸入電流
| VCC = 5V, VI = VT-
| -
| -0.18
| -
| mA
|
II
| Input Current @ MAX Input Voltage輸入電流@最大輸入電壓
| VCC = 最大, VI = 7V
| -
| -
| 0.1
| mA
|
IIH
| HIGH Level Input Current輸入高電平電流
| VCC = 最大, VI = 2.7V
| -
| -
| 20
| μA
|
IIL
| LOW Level Input Current輸入低電平電流
| VCC = 最大, VI = 0.4V
| -
| -
| -0.4
| mA
|
IOS
| Short Circuit Output Current短路輸出電流
| VCC = 最大 (Note 4)
| -20
| -
| -100
| mA
|
ICCH
| Supply Current with Out puts HIGH高電平輸出電源電流
| VCC = 最大
| -
| 8.6
| 16
| mA
|
ICCL
| Supply Current with Outputs LOW低電平輸出電源電流
| VCC = 最大
| -
| 12
| 21
| mA
|
Note 3: VCC = 5V, TA = 25℃.
| ||||||
Note 4: Not more than one output should be shorted at a time, and the duration should not exceed one second.
| ||||||
Switching Characteristics開關(guān)特性 at VCC = 5V and TA = 25℃
Switching Characteristics開關(guān)特性
| ||||||
at VCC = 5V and TA = 25℃
| ||||||
Symbol 符號
| Parameter 參數(shù)
| RL = 2kΩ
| UNIT 單位
| |||
CL = 15pF
| CL = 50pF
| |||||
最小
| 最大
| 最小
| 最大
| |||
tPLH
| Propagation Delay Time LOW-to-HIGH Level Output低到高電平輸出傳遞延遲時(shí)間
| 5
| 22
| 8
| 25
| ns
|
tPHL
| Propagation Delay Time HIGH-to-LOW Level Output高到低電平輸出傳遞延遲時(shí)間
| 5
| 22
| 10
| 33
| ns
|
采用施密特觸發(fā)器74HC14的光耦接收整形電路:
圖2 光電耦合器接收整形電路
采用施密特觸發(fā)器74HC14的方波振蕩器電路
圖3 方波振蕩器
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