TC74HC14AFN中文资料

74HC14中文资料74HC14的作用：六反相斯密特触发器真值表：Y=AInput输入output输出A YL HH L图1引脚功能极限参数：Supply Voltage电源电压7VInput Voltage输入电压7VOperating Free Air Temperature Range自由空气温度范围0℃to+70℃Storage Temperature Range储存温度范围-65℃to+150℃Recommended Operating Conditions建议操作条件Symbol 符号Parameter参数最小典型最大UNIT单位VCC Supply Voltage电源电压 4.755 5.25V VT+Positive-Going Input Threshold Voltage正向输入阈值电压(Note2)1.4 1.6 1.9VVT-Negative-Going Input Threshold Voltage反向输入阈值电压(Note2)0.50.81VHYS Input Hysteresis输入滞后(Note2)0.40.8-V IOH HIGH Level Output Current高电平输出电流---0.4mA IOL LOW Level Output Current低电平输出电流--8mA TA Free Air Operating Temperature工作温度0-70℃Note2:VCC=5V.Electrical Characteristics电气特性over recommended operating free air temperature range(unless otherwise noted)Symbol 符号Parameter参数Conditions条件最小典型最大UNIT单位VI Input Clamp Voltage输入钳位电压VCC=最小,II=-18mA---1.5VVOH HIGH Level Output Voltage输出高电平电压VCC=最小,IOH=最大VIL=最大2.73.4-VVOL LOW Level输出低电平电压VCC=最小,IOL=最大-0.350.5--Output Voltage输出电压VIH=最小---V VCC=最小,IOL=4mA-0.250.4IT+Input Current at Positive-GoingThreshold正向阈值输入电流VCC=5V,VI=VT+--0.14-mAIT-Input Current at Negative-GoingThreshold反向阈值输入电流VCC=5V,VI=VT---0.18-mAII Input Current@MAX Input Voltage输入电流@最大输入电压VCC=最大,VI=7V--0.1mAIIH HIGH Level Input Current输入高电平电流VCC=最大,VI=2.7V--20μAIIL LOW Level Input Current输入低电平电流VCC=最大,VI=0.4V---0.4mAIOS Short Circuit Output Current短路输出电流VCC=最大(Note4)-20--100mAICCH Supply Current with Out puts HIGH高电平输出电源电流VCC=最大-8.616mAICCL Supply Current with Outputs LOW低电平输出电源电流VCC=最大-1221mANote3:VCC=5V,TA=25℃.Note4:Not more than one output should be shorted at a time,and the duration should not exceed one second.Switching Characteristics开关特性at VCC=5V and TA=25℃Switching Characteristics开关特性at VCC=5V and TA=25℃Symbol 符号Parameter参数RL=2kΩUNIT单位CL=15pF CL=50pF最小最大最小最大tPLH Propagation Delay Time LOW-to-HIGH Level Output低到高电平输出传递延迟时间522825nstPHL Propagation Delay Time HIGH-to-LOW Level Output高到低电平输出传递延迟时间5221033ns应用电路：图2光电藕合器接收整形电路图3方波振荡器。

Fig.2 Pin configuration DHVQFN14.
handbook, halfpage handbook, halfpage
1
2
1
1A
1Y
2 3 4 5 6 4
3
2A
2Y
5
3A
3Y
6
9
4A
4Y
8
9
8
11
5A
5Y
10
11
10
13
6A
6Y
12 13 12
MNA841
MNA840
Fig.3 Logic symbol.
2003 Oct 30
2
元uctors
Product specification
Hex inverting Schmitt trigger
FUNCTION TABLE INPUT nA L H Note 1. H = HIGH voltage level; L = LOW voltage level. ORDERING INFORMATION PACKAGE TYPE NUMBER TEMPERATURE RANGE 74HC14D 74HCT14D 74HC14DB 74HCT14DB 74HC14N 74HCT14N 74HC14PW 74HCT14PW 74HC14BQ 74HCT14BQ PINNING PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1A 1Y 2A 2Y 3A 3Y GND 4Y 4A 5Y 5A 6Y 6A VCC SYMBOL data input data output data input data output data input data output ground (0 V) data output data input data output data input data output data input supply voltage −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C −40 to +125 °C PINS 14 14 14 14 14 14 14 14 14 14 PACKAGE SO14 SO14 SSOP14 SSOP14 DIP14 DIP14 TSSOP14 TSSOP14 DHVQFN14 DHVQFN14

74HC14引脚图:
图1 引脚功能
74HC14真值表:
74HC14电气参数:
极限参数：
Switching Characteristics开关特性 at VCC = 5V and TA = 25℃
采用施密特触发器74HC14的光耦接收整形电路:
图2 光电耦合器接收整形电路
采用施密特触发器74HC14的方波振荡器电路
图3 方波振荡器
施密特触发器.主要用要将上下沿较缓或奇变较大的的数字信号变为方波形式以利数字信号接收电路识别.比如一串高频数字信号方波经过一个并普通光耦后波形可能奇变的后级不能识别,加一个74HC14进行整形
编辑本段74HC14概述：
74HC14是一款高速CMOS器件，74HC14引脚兼容低功耗肖特基TTL （LSTTL）系列。

74HC14遵循JEDEC标准。

74HC14实现了6路施密特触发反相器，可将缓慢变化的输入信号转换成清晰、无抖动的输出信号。

编辑本段特性：
应用：波形、脉冲整形器
非稳态多谐振荡器
单稳多谐振荡器
兼容JEDEC标准
ESD保护：
HBM EIA/JESD22-A114-A超过2000 V
MM EIA/JESD22-A115-A超过200 V
温度范围 -40～+85 ℃ -40～+125 ℃
编辑本段主要参数：
典型电源电压：
正向输入阀值电压：VT+=
负向输入阀值电压：VT-=
驱动电流： +/
传输延迟：12ns @5V
逻辑电平：CMOS
引脚：14
封装类型：DIP。

supply voltage input voltage output voltage ambient temperature
74HC14
Min Typ Max
2.0 5.0 6.0
0
-
VCC
0
-
VCC
40 +25 +125
74HCT14
Unit
Min Typ Max
4.5 5.0 5.5 V
0
-
VCC V
2. Features and benefits
Complies with JEDEC standard no. 7A Low-power dissipation ESD protection:
HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from 40 C to +85 C and from 40 C to +125 C
4 of 20
NXP Semiconductors
74HC14; 74HCT14
Hex inverting Schmitt trigger
10. Static characteristics
Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
9. Recommended operating conditions
Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V)