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参数资料
| 型号： | 74VHC123ASJX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | MULTIVIBRATOR DUAL MONO 16SOP |
| 标准包装： | 2,000 |
| 系列： | 74VHC |
| 逻辑类型： | 单稳态 |
| 独立电路： | 2 |
| 施密特触发器输入： | 无 |
| 传输延迟： | 8.1ns |
| 输出电流高，低： | 8mA，8mA |
| 电源电压： | 2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 16-SOP |
| 包装： | 带卷 (TR) |
74VHC123A
Dual
Retrig
g
erab
le
Monostab
le
Multivibrator
1993 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHC123A Rev. 1.2
3
Block Diagrams
Note A: Cx, Rx, Dx are external Capacitor, Resistor, and Diode, respectively.
Note B: External clamping diode, Dx;
External capacitor is charged to VCC level in the wait state, i.e. when no trigger is applied.
If the supply voltage is turned off, Cx discharges mainly through the internal (parasitic) diode. If Cx is sufficiently large
and VCC drops rapidly, there will be some possibility of damaging the IC through in rush current or latch-up. If the
capacitance of the supply voltage filter is large enough and VCC drops slowly, the in rush current is automatically
limited and damage to the IC is avoided.
The maximum value of forward current through the parasitic diode is ±20mA. In the case of a large Cx, the limit of fall
time of the supply voltage is determined as follows:
tf ≥ (VCC –0.7) Cx / 20mA
(tf is the time between the supply voltage turn off and the supply voltage reaching 0.4 VCC)
In the event a system does not satisfy the above condition, an external clamping diode (Dx) is needed to protect the IC
from rush current.
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| 74VHC123ASJX_NL | 功能描述:单稳态多谐振荡器 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 |
| 74VHC125 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Quad Buffer with 3-STATE Outputs |
| 74VHC125_04 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:QUAD BUS BUFFERS (3-STATE) |
| 74VHC125_07 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Quad Buffer with 3-STATE Outputs |
| 74VHC125BQ | 制造商:NXP Semiconductors 功能描述:Cut Tape 制造商:NXP Semiconductors 功能描述:Bulk 制造商:NXP Semiconductors 功能描述:IC QUAD BUFF/DVR TRI-ST DH 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 4-CH Non-Inverting 3-ST CMOS 14-Pin DHVQFN EP T/R |
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