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參數(shù)資料
| 型號： | M74HC4538M1R |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 諧振器 |
| 英文描述： | HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16 |
| 封裝： | SO-16 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 380K |
| 代理商： | M74HC4538M1R |
M74HC4538
3/11
TIMING CHART
BLOCK DIAGRAM
(1) Cx, Rx, Dx are external components.
(2) Dx is a clamping diode.
The external capacitor is charged to Vcc in the stand-by-state, i.e. no trigger. When the supply voltage is turned off Cx is di scharged mainly
trough an internal parasitic diode(see figures). If Cx is sufficiently large and Vcc decreases rapidly, there will be some possibility of damaging
the I.C. with a surge current or latch-up. If the voltage supply filter capacitor is large enough and Vcc decrease slowly, the surge current is
automatically limited and damage to the I.C. is avoided. The maximum forward current of the parasitic diode is approximately 20 mA. In cases
where Cx is large the time taken for the supply voltage to fall to 0.4 Vcc can be calculated as follows :
tf > (Vcc - 0.7) x Cx/20mA
In cases where tf is too short an external clamping diode is required to protect the I.C. from the surge current.
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相關(guān)代理商/技術(shù)參數(shù) |
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| M74HC4538RM13TR | 功能描述:單穩(wěn)態(tài)多諧振蕩器 Dual Mono Multivib 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 |
| M74HC4538RM13TR | 制造商:STMicroelectronics 功能描述:Dual Retriggerable Monostable Multivibra |
| M74HC4538TTR | 功能描述:單穩(wěn)態(tài)多諧振蕩器 Dual Mono Multivib 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 |
| M74HC4543 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:BCD TO 7 SEGMENT LATCH/DECODER/LCD DRIVER |
| M74HC4543B1R | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 BCD to 7-Seg Latch RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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