SSR811 Datasheet, PDF (1/10 Pages) Sangdest Microelectronic (Nanjing) Co., Ltd – Reset Circuits with Manual Reset Input

Technical Data
Data Sheet N1594 Rev. -
SSR811/SSR812
Reset Circuits with Manual Reset Input
Description:
SSR811/SSR812 are low-power microprocessor (μP) supervisory circuits used to monitor power
supplies in μP and digital systems. They provide applications with benefits of circuit reliability and low
cost by eliminating external components. SSR811/SSR812 also offer a manual reset input.
These devices perform as valid singles in applications with Vcc ranging from 6.0V down to 0.9V. The
reset signal lasts for a minimum period of 140ms whenever VCC supply voltage falls below preset
threshold. Both SSR811 and SSR812 were designed with a reset comparator to help identify invalid
signals, which last less than 140ms. The only difference between them is that they have an active-low
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R E S E T output and active-high RESET output, respectively.
Low supply current (1μA) makes SSR811/SSR812 ideal for portable equipment. The devices are
available in SOT-23-5 package.
Features:
• Ultra Low Supply Current 1μA(typ.)
• Guaranteed Reset Valid to Vcc=0.9V
• Available in two Output Types: Push-Pull Active Low (SSR811), Push-Pull Active High
(SSR812)
• 140ms Min. Power-On Reset Pulse Width
• Internally Fixed Threshold 2.3V, 2.6V, 2.7V, 2.9V, 3.1V, 4.0V, 4.4V, and 4.6V
• Tight Voltage Threshold Tolerance: 1.5%
• Low Profile Package: SOT-23-5.
Applications:
• Notebook Computers
• Digital Still Cameras
• PDAs
• Critical Microprocessor Monitoring
Typical application circuit:
• China - Germany - Korea - Singapore - United States •
• http://www.smc-diodes.com - sales@ smc-diodes.com •