TS3809/3810 Series Microprocessor Reset Circuit SOT-23 Pin Definition: TS3809 TS3810 1. GND 1. GND 2. (RESET) 2. RESET 3. VCC 3. VCC 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 have 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. Ordering Information 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 3Kpcs / 7” Reel TS3810CXx RF SOT-23 Note: x is the threshold voltage type, option as: A : 4.63V B : 4.38V C : 4.00V D : 3.08V E : 2.93V F : 2.63V G : 2.25V Typical Application Circuit Battery-operated systems and Controllers Intelligent instruments Critical uP and uC power monitoring Portable / Battery powered equipment Automotive Absolute Maximum Rating Parameter VCC VRESET ICC IO PD TJ.OPR TSTG TLEAD Terminal Voltage (with respect to Gnd) RESET & (RESET) push-pull Input Current, VCC Output Current, RESET, (RESET) Power Dissipation Operating Junction Temperature Range Storage Temperature Range o Lead Soldering Temperature (260 C)

TS3809/3810 Series Microprocessor Reset Circuit Thermal Performance Parameter Thermal Resistance from Junction to Case Thermal Resistance from Junction to ambient Note: θJA is measured the PCB copper area of approximately 1in (Multi-layer). Needs to connect to VSS pin. 2 Electrical Specification (Ta = 25oC, unless otherwise specified.) Parameter Input Supply Voltage Supply Current Reset Threshold Reset Threshold Temperature Coefficient Set-up Time VCC to Reset Delay Reset Active Timeout Period RESET Output (TS3809) Voltage Low RESET Output (TS3809) Voltage High (RESET) Output (TS3810) Voltage...

TS3809/3810 Series Microprocessor Reset Circuit Block Diagram Device Top Marking Information Identification Code Identification Code

TS3809/3810 Series Microprocessor Reset Circuit Application Information Negative-Going VCC transients in addition to issuing a reset to the µP during power-up, power-down, and brownout conditions, the TS3809/3810 are relatively immune to short-duration negative-going Vcc transients (glitches). The TS3809/3810 do not generate a reset pulse. The graph was generated using a negative going pulse applied to Vcc, starting 0.5V above the actual reset threshold and ending below it by the magnitude indicated (reset comparator overdrive). The graph indicates the maximum pulse width a negative going Vcc...

IOH, High Level Output Current (mA)

TS3809/3810 Series Microprocessor Reset Circuit

TS3809/3810 Series Microprocessor Reset Circuit Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or...