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| TS803 Microprocessor Reset Circuit SOT-23 Pin Definition: TS803 TS803R 1. Ground 1. Reset 2. Reset 2. Ground 3. Vcc 3. Vcc General Description The TS803/TS803R are microprocessor (P) supervisory circuit used to monitor the power supplies in P 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 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. Reset thresholds suitable for operation with a variety of supply voltages are available. The TS803/TS803R are open -drain outputs. The TS803/TS803R have an active low RESET output, while the TS803/TS803R has an active high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the output guaranteed to be in the correct logic state for VCC down to 1V. Low supply correct makes the TS803/TS803R ideal for use in portable equipment. Features Precision monitoring of +3V, +3.3V & +5V power supply voltage Fully specified over temperature Available in three output configurations Open-Drain RESET low output 3uA supply current Guaranteed reset valid to Vcc = +1V Power supply transient immunity No external components Computers Controllers Intelligent Instruments Critical uP and uC power monitoring Portable / Battery Power Equipment Automotive Ordering Information Part No. Package Packing TS803CXx RF SOT-23 3Kpcs / 7" Reel TS803RCXx RF SOT-23 3Kpcs / 7" Reel Note: x is the threshold voltage type, option as TS803 Threshold Voltage A : 4.63V B : 4.38V C : 4.00V D : 3.08V E : 2.93V F : 2.63V G : 2.32V H : 2.1V I : 2.0V J : 1.8V K :1.6V TS803R Threshold Voltage B : 4.20V E : 2.93V F : 2.70V Contact factory for additional voltage options. Applications Absolute Maximum Rating Parameter Supply Voltage RESET & (RESET) Open Drain Input Current, VCC Output Current, RESET Rate of Rise, VCC Symbol VCC VRESET ICC IO VR Value 7 - 0.3 ~ (VCC +0.3) 20 20 100 Unit V V mA mA V/uS ESD Classification B Note: Stress above the listed absolute maximum rating may cause permanent damage to the device HBM B: 2000V~3999V 1/6 Version: A07 TS803 Microprocessor Reset Circuit Recommended Operating Conditions Parameter Supply Voltage Operating Ambient Temperature Range Operating Junction Temperature Range Storage Temperature Range Thermal Resistance Power Dissipation Lead Soldering Temperature (260 C) o Symbol VCC TA TJ TSTG jc PD TLEAD Value <5 -40 ~ +85 -40 ~ +125 -65 ~ +150 325 350 10 Unit V o o o o C C C C/W mW S Electrical Characteristics Ta=25oC, unless otherwise specified. Parameter Input Supply Voltage Supply Current o Conditions Ta=-40 C~+85 C VCC VTH * 1.1 VIN = 3V, Ta=-40 C~+85 C o o o Symbol VCC ICC VTH Min 1.0 --0.985 |VTH| Typ ----- Max 5.5 3 5 1.015 |VTH| 1.02 |VTH| 160 -5 0.5 Unit V uA Reset Threshold Reset Threshold (Full temperature range) Reset Threshold Temperature Coefficient VCC to Reset Delay Reset Active Timeout Period RESET Output Voltage Low VCC = VTH to (VTH - 100mV) Ta=-40 C~+85 C VCC < VTH(MIN), ISINK =1.2mA, VCC > VTH(MAX), ISOURCE =500uA RESET Output Voltage High VCC > 1.8V VCC > VTH(MAX), ISOURCE =150uA, o o V VTH 0.97 |VTH| -- V ppm/ C uS mS V o VTH 3-0 -0.5 -- 50 40 1.5 -- TDELAY VOL VOH 0.8 VCC -- -- V 1.8V >= VCC > 1V Note 1: The data based on VTH = 2.7V part type. Note 2: Guaranteed by Design 2/6 Version: A07 TS803 Microprocessor Reset Circuit Function Block Function Description Typical Application Circuit Timing Diagram Electrical Characteristics Curve Figure 1. Glitch Rejection 3/6 Figure 2. Reset Time vs. Temperature Version: A07 TS803 Microprocessor Reset Circuit Electrical Characteristics Curve (Continue) Figure 3. Iin vs. Temperature Figure 4. Reset Vth vs. Temperature Figure 5. Iin vs. Vin Figure 6. Threshold Hysteresis vs. Temperature Figure 7. Reset VOL vs. Temperature 4/6 Version: A07 TS803 Microprocessor Reset Circuit SOT-23 Mechanical Drawing DIM A A1 B C D E F G H I J SOT-23 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX. 0.95 BSC 0.037 BSC 1.9 BSC 0.074 BSC 2.60 3.00 0.102 0.118 1.40 1.70 0.055 0.067 2.80 3.10 0.110 0.122 1.00 1.30 0.039 0.051 0.00 0.10 0.000 0.004 0.35 0.50 0.014 0.020 0.10 0.20 0.004 0.008 0.30 0.60 0.012 0.024 5 10 5 10 5/6 Version: A07 TS803 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 use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 6/6 Version: A07 |
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