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參數(shù)資料
| 型號(hào)： | 74VHC123ASJ |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | MULTIVIBRATOR DUAL MONO 16SOP |
| 標(biāo)準(zhǔn)包裝： | 47 |
| 系列： | 74VHC |
| 邏輯類型： | 單穩(wěn)態(tài) |
| 獨(dú)立電路： | 2 |
| 施密特觸發(fā)器輸入： | 無 |
| 傳輸延遲： | 8.1ns |
| 輸出電流高，低： | 8mA，8mA |
| 電源電壓： | 2 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOP |
| 包裝： | 管件 |
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74VHC123ASJX | 功能描述:單穩(wěn)態(tài)多諧振蕩器 Dual Multivibrator RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74VHC123ASJX_NL | 功能描述:單穩(wěn)態(tài)多諧振蕩器 RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74VHC125 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Quad Buffer with 3-STATE Outputs |
| 74VHC125_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD BUS BUFFERS (3-STATE) |
| 74VHC125_07 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Quad Buffer with 3-STATE Outputs |
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