HWD809 Datasheet PDF | Chengdu Sino Microelectronics System

Chengdu Sino Microelectronics System HWD809

The HWD803/HWD809/HWD810 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V, or +2.5V powered circuits. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold.

Part No.	HWD809
Datasheet	HWD809 Download
Manufacturer	Chengdu Sino Microelectronics System
Description	3-Pin Microprocessor Reset Circuits
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GENERAL DESCRIPTION

Reset thresholds suitable for operation with a variety of supply voltages are available. The HWD803 has an open-drain output stage, while the HWD809/HWD810 have push-pull outputs. The HWD803’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The HWD803/HWD809 have an active-low RESET output, while the HWD810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the HWD803/HWD809/ HWD810 ideal for use in portable equipment. The HWD803 is available in a 3-pin SC70 package, and the HWD809/HWD810 are available in 3-pin SC70 or SOT23 packages.

APPLICATIONS

Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery-Powered Equipment Automotive Typical Operating Circuit VCC VCC HWD803 HWD809 RESET RPULL-UP* VCC µP RESET INPUT G...

HWD809 Datasheets by Manufacturer

1 datasheets

Part Number	Manufacturer
HWD809	Chengdu Sino Microelectronics System