SSR809N Datasheet, PDF (1/10 Pages) Sangdest Microelectronic (Nanjing) Co., Ltd – 3-Pin Microprocessor Reset Circuits

SSR809N
SSR809P/SSR810P
Technical Data
3-Pin Microprocessor Reset Circuits
Data Sheet N1589 Rev. -
Description:
SSR809P/SSR810P 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.
These devices perform as valid signals 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 SSR809P and SSR810P 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 SSR809P/SSR810P ideal for portable equipment. The devices are
available in SOT-23 package.
Features:
• Ultra Low Supply Current 1μA(typ.)
• Guaranteed Reset Valid to Vcc=0.9V
• Available in Three Output Type: Open-Drain Active Low (SSR809N), Push-Pull Active Low
(SSR809P), Push-Pull Active High (SSR810P)
• 140ms Min. Power-On Reset Pulse Width
• Internally Fixed Threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.0V, 4.2V, 4.4V, 4.6V
• Tight Voltage Threshold Tolerance: 1.5%
• Tiny Package in SOT-23
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 •