MAX809RD_复位芯片.pdfVIP

INTEGRATED CIRCUITS MAX809/MAX810 3-pin microprocessor resets Product data 2003 Aug 08 Supersedes data of 2002 Oct 21 Philips Semiconductors Product data 3-pin microprocessor resets MAX809/MAX810 DESCRIPTION FEATURES The MAX809/MAX810 are single function microprocessor resets • Monitors 5.0 V, 3.3 V and 3 V supplies used to monitor supply voltages in microprocessor and other logic systems. They provide a reset signal to the microprocessor during • 140 ms min. reset delay time: power-up, power-down, and brownout conditions. The reset signal is – Active-LOW RESET output (MAX809) asserted when the supply voltage drops below the preset threshold, – Active-HIGH RESET output (MAX810) and the signal is released a set time after the supply voltage has risen above the preset threshold. • Power supply transient immunity The MAX809 has an active-LOW reset output while the MAX810 • Guaranteed reset valid for 1.1 V has an active-HIGH reset output. • Available in small SOT23 and SC70 3-pin packages The low supply current of typically 17 µA makes the MAX809/MAX810 ideal for use in portable, battery operated • No external components needed equipment. They are available in the 3-pin SOT23 and SC70 • Specified over full temperature range –40 °C to +105 °C packages.