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Part Number: ASM812
Description: The ASM811/ASM812 are cost effective low power supervisors designed to monitor voltage levels of 3.0V,...
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ASM812
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DataSheet
General Description
ASM812 General Description
The ASM811/ASM812 are cost effective low power supervisors designed to monitor voltage levels of 3.0V, 3.3V and 5.0V power supplies in low-power microprocessor (P), microcontroller (C) and digital systems. They provide excellent reliability by eliminating external components and adjustments.
A reset signal is issued if the power supply voltage drops below a preset reset threshold and is asserted for at least 140ms after the supply has risen above the reset threshold. The ASM811 has an active-low outputRESETthat is guaranteed to be in the correct state for VCC down to 1.1V. The ASM812 has an activehigh RESET output. The reset comparator is designed to ignore fast transients on VCC. A debounced manual reset input allows the user to manually reset the systems to bring them out of locked state.
Low power consumption makes the ASM811/ASM812 ideal for use in portable and battery operated equipment. The ASM811/ASM812 are available in a compact 4-pin SOT-143 package and thus use minimal board space.
ASM812 Maximum Ratings
| Parameter | Min | Max | Units |
| Pin Terminal Voltage With Respect To Ground | |||
| VCC | -0.3 | 6.0 | V |
| RESET, RESET and MR | -0.3 | VCC + 0.3 | V |
| Input current at VCC and MR | 20 | mA | |
| Output current: RESET, RESET | 20 | mA | |
| Rate of Rise at VCC | 100 | V/s | |
| Power Dissipation (TA = 70) Derate SOT-143 4mW/ above 70 |
320 | uW | |
| Operating temperature range | -40 | 105 | |
| Storage temperature range | -65 | 160 | |
| Lead temperature (Soldering, 10 sec) | 300 | ||
ASM812 Features
• New 4.0V threshold option
• 9A supply current
• Monitor 5V, 3.3V and 3V supplies
• Manual reset input
• 140ms min. reset pulse width
• Guaranteed over temperature
• Active-low reset valid with 1.1V supply (ASM811)
• Small 4-pin SOT-143 package
• No external components
• Power-supply transient-immune design
• 9A supply current
• Monitor 5V, 3.3V and 3V supplies
• Manual reset input
• 140ms min. reset pulse width
• Guaranteed over temperature
• Active-low reset valid with 1.1V supply (ASM811)
• Small 4-pin SOT-143 package
• No external components
• Power-supply transient-immune design
ASM812 Typical Application
• Computers and Controllers
• Embedded controllers
• Portable/Battery operated systems
• Intelligent instruments
• Wireless communication systems
• PDAs and handheld equipment
• Automotive systems
• Safety Systems
• Embedded controllers
• Portable/Battery operated systems
• Intelligent instruments
• Wireless communication systems
• PDAs and handheld equipment
• Automotive systems
• Safety Systems
ASM812 Connection Diagram
ASM812
PDF/DataSheet Download
- Datasheet: ASM812
- File Size: 520192 KB
- Manufacturer: ALLIANCE
- Click here to Download
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