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参数资料
| 型号： | M74HC423TTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 谐振器 |
| 英文描述： | HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16 |
| 封装： | TSSOP-16 |
| 文件页数： | 5/11页 |
| 文件大小： | 251K |
| 代理商： | M74HC423TTR |
M74HC423
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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| M74HC42B1R | 功能描述:编码器、解码器、复用器和解复用器 BCD-to-Decimal Decod RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| M74HC42C1R | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:BCD TO DECIMAL DECODER |
| M74HC42M1R | 功能描述:编码器、解码器、复用器和解复用器 BCD-to-Decimal Decod RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| M74HC42RM13TR | 功能描述:编码器、解码器、复用器和解复用器 BCD-to-Decimal Decod RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| M74HC42TTR | 功能描述:编码器、解码器、复用器和解复用器 BCD DECIMAL DECODR RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
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