CXDR7597监控电路监控微处理器和数字系统中的电源电压。它们在通电、断电和断电状态下提供复位输出。通电时，内部计时器将断言的重置保持240ms。这将使微处理器保持重置状态，直到条件稳定。/RESET输出在VCC低至1V时保持工作状态。CXDR7595/CXDR7597提供有效的低复位信号（/RESET），而CXDR7598提供有效的高信号（复位）输出。CXDR7597/CXDR7598具有推拉输出，而CXDR7595具有开漏输出，这需要一个外部上拉电阻器。八个重置阈值电压选项可用于监测1.8V、2.5V、3V、3.3V和5V电源电压。
复位比较器具有内置的故障免疫功能，使其对VCC上的快速瞬变免疫。
通常13μA的低电源电流使CXDR7595/CXDR7597/CXDR7598非常适合用于便携式电池驱动设备。在-40℃到+125℃的扩展温度范围内都有规定
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[ CXDR7597 ]"
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7.相关产品
产品概述 返回TOP
The CXDR7595/CXDR7597/CXDR7598 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. They provide a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 240ms. This holds the microprocessor in a reset state until conditions have stabilized. The /RESET output remains operational with VCC as low as 1V. The CXDR7595/ CXDR7597 provides an active low reset signal (/RESET) while the CXDR7598 provides an active high signal (RESET) output. The CXDR7597/CXDR7598 has push-pull outputs, whereas the CXDR7595 has an open-drain output, which requires an external pull-up resistor.
Eight reset threshold voltage options are available suitable for monitoring 1.8V, 2.5V, 3V, 3.3V and 5V supply voltages.
The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC.
The low supply current of typically 13μA makes the CXDR7595/CXDR7597/CXDR7598 ideal for use in portable, battery operated equipment. All are specified over the extended -40℃ to +125℃ temperature range.
产品特点 返回TOP
• Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V, 5V
Options
• Fully Specified over Temperature
• Low Power Consumption (13μA TYP)
• Reset Assertion Down to 1V VCC
• 150ms Min Power-On Reset
Open-Drain /RESETOutput (CXDR7595)
Push-Pull /RESETOutput (CXDR7597)
Push-Pull RESET Output (CXDR7598)
• -40℃ to +125℃ Operating Temperature Range
• Small Packaging
CXDR7595 Available in SOT-23-3 and SOT-23
CXDR7597 Available in SOT-23-3 and SOT-23
CXDR7598 Available in SOT-23-3 and SOT-23
应用范围 返回TOP
Microprocessor Systems
Controllers
Intelligent Instruments
Automotive Systems
Safety Systems
Portable Instruments
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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微处理器复位芯片 |
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Product |
Manual Reset |
VCC(Min) (V) |
VCC(Max) (V) |
Supply Current(μA) |
Reset Voltage Threshold (V) |
VCC to RESET/RESET Delay (μs) |
Reset Active Timeout Period (ms) |
Package |
|
Y |
1 |
5.5 |
50 |
4.65,4.4,4.00, 3.08,2.93,2.63 |
200 |
SOIC-8 MSOP-8 |
||
|
Y |
1 |
5.5 |
20 |
4.65,4.4,4.00, 3.08,2.93,2.63 |
200 |
SOIC-8 |
||
|
N |
1 |
5.5 |
3 |
2.93,2.63,2.32,1.63 |
80 |
Programmable |
SOT23-5 |
|
|
N |
1 |
5.5 |
3 |
2.93,2.63,2.32,1.63 |
80 |
Programmable |
SC70-4(R) SOT-143 |
|
|
N |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08 2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-23-3 SOT-23 |
|
|
N |
1 |
5.5 |
3 |
2.93,2.63,2.32,1.63 |
80 |
Programmable |
SOT-23-5 |
|
|
N |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08 ,2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-23-3 SOT-23 |
|
|
N |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08, 2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-23-3 SOT-23 |
|
|
Y |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08, 2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-143 SOT23-5 |
|
|
Y |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08 ,2.93,2.63,2.32 |
20 |
240 |
SOT-143 SOT23-5 |
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