TS3810

TS3809/3810 Series Taiwan Semiconductor Microprocessor Reset Circuit GENERAL DESCRIPTION The TS3809/3810 series are used for microprocessor (µP) supervisory circuits 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, +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 200ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. TS3809/3810 series have push pull outputs. TS3809 series has an active low RESET output, while the TS3810 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 1.0V. Low supply current makes TS3809/3810 series ideal for use in portable equipment. FEATURES ● High Accurate ±2% ● Precision monitoring of +3V, +3.3V, and +5V Power supply voltage ● Fully specified over temperature ● Available in three output configurations ● Push-Pull RESET low output (TS3809) ● Push-Pull (RESET) high output (TS3810) ● 200ms typ. Power-on reset pulse width ● 25µs supply current ● Guaranteed reset valid to VCC=+1V ● Power supply transient immunity APPLICATION ● Battery-operated systems an...