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ADM6326-31ARTZ-R7

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ADM6326-31ARTZ-R7

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Part Number ADM6326-31ARTZ-R7
Manufacturer Analog Devices Inc.
Description IC MPU RESET CIRC 3.1V SOT23-3
Datasheet ADM6326-31ARTZ-R7 Datasheet
Package TO-236-3, SC-59, SOT-23-3
In Stock 12,106 piece(s)
Unit Price $ 1.1205 *
Lead Time Can Ship Immediately
Estimated Delivery Time Nov 2 - Nov 7 (Choose Expedited Shipping)
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Part Number # ADM6326-31ARTZ-R7 (PMIC - Supervisors) is manufactured by Analog Devices Inc. and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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ADM6326-31ARTZ-R7 Specifications

ManufacturerAnalog Devices Inc.
CategoryIntegrated Circuits (ICs) - PMIC - Supervisors
Datasheet ADM6326-31ARTZ-R7Datasheet
PackageTO-236-3, SC-59, SOT-23-3
Series-
TypeSimple Reset/Power-On Reset
Number of Voltages Monitored1
OutputPush-Pull, Totem Pole
ResetActive Low
Reset Timeout100 ms Minimum
Voltage - Threshold3.08V
Operating Temperature-40°C ~ 85°C (TA)
Mounting TypeSurface Mount
Package / CaseTO-236-3, SC-59, SOT-23-3
Supplier Device PackageSOT-23-3

ADM6326-31ARTZ-R7 Datasheet

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Ultralow Power, 3-Lead, SOT-23 Microprocessor Reset Circuits Data Sheet ADM6326/ADM6328/ADM6346/ADM6348 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2009–2018 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Ultralow supply current of 1 µA maximum (ADM6326/ADM6328) Accurate monitoring of 2.5 V, 3 V, 3.3 V, and 5 V rails Reset thresholds available in increments from 2.2 V to 4.63 V Glitch immunity from negative-going VCC transients 2 reset output options Push-pull RESET (ADM6326/ADM6346) Open-drain RESET (ADM6328/ADM6348) Minimum reset timeout of 100 ms Operating temperature range of −40°C to +85°C 3-lead SOT-23 package APPLICATIONS Telecommunications Microprocessor systems Desktop and notebook computers Portable equipment FUNCTIONAL BLOCK DIAGRAMS 08 05 2- 00 1 RESET GENERATOR (100ms) ADM6326/ADM6346 VREF VCC GND RESET Figure 1. RESET GENERATOR (100ms) ADM6328/ADM6348 VREF VCC GND RESET 08 05 2- 00 2 Figure 2. GENERAL DESCRIPTION The ADM6326/ADM6328/ADM6346/ADM6348 devices provide low cost solutions for protecting sensitive circuitry, such as micro- processor and telecommunications circuitry. With built-in glitch immunity, ultralow supply currents, and 24 reset threshold voltage options, the ADM6326/ADM6328/ ADM6346/ADM6348 not only ensure that systems are immune to fast transients on VCC, but also that the devices are suitable for monitoring a variety of supply voltages in low power, portable equipment. These devices provide a reset output during power-up, power- down, and brownout conditions. On power-up, an internal timer holds RESET asserted for at least 100 ms. This holds the microprocessor in a reset state until conditions have stabilized. The reset output remains operational with VCC as low as 1 V. The ADM6326 and ADM6346 have an active low push-pull reset output. The ADM6328 and ADM6348 have an active low open- drain reset output, which requires an external pull-up resistor. The ADM6326 and ADM6328 offer a choice of ten reset thresholds in increments between 2.2 V and 3.08 V, whereas the ADM6346 and ADM6348 offer a choice of 14 reset thresholds between 3.3 V and 4.63 V. Not all options are released for sale as standard models. See the Ordering Guide for details. These devices are available in a 3-lead SOT-23 package and operate over the extended temperature range of −40°C to +85°C.

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ADM6326/ADM6328/ADM6346/ADM6348 Data Sheet Rev. B | Page 2 of 9 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagrams ............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ..............................5 Typical Performance Characteristics ..............................................6 Theory of Operation .........................................................................7 Reset Output ..................................................................................7 Interfacing to Other Devices .......................................................7 Transient Immunity ......................................................................7 Outline Dimensions ..........................................................................8 Ordering Guide .............................................................................9 REVISION HISTORY 5/2018—Rev. A to Rev. B Changes to General Description Section ...................................... 1 Changes to Table 2 ............................................................................ 3 Added Note 1, Table 2; Renumbered Sequentially ....................... 3 Changes to Ordering Guide ............................................................ 9 6/2014—Rev. 0 to Rev. A Changes to Figure 1 and Figure 2 ................................................... 1 9/2009—Revision 0: Initial Version

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Data Sheet ADM6326/ADM6328/ADM6346/ADM6348 Rev. B | Page 3 of 9 SPECIFICATIONS TA = −40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C and VCC = 3 V. Overtemperature limits are guaranteed by design. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments OPERATING VOLTAGE RANGE, VCC 1.0 5.5 V INPUT CURRENT, ICC 0.5 1.0 µA ADM6326/ADM6328 only, VCC = 3.0 V for VTH ≤ 2.93 V, VCC = 3.2 V for VTH > 2.93 V, no load 1.0 1.75 µA VCC = 5.5 V, no load RESET THRESHOLD Threshold Voltage, VTH (See Table 2) VTH − 2.5% VTH VTH + 2.5% V VTH − 1.5% VTH VTH + 1.5% V TA = 25°C Temperature Coefficient 40 ppm/°C Hysteresis ADM6326/ADM6328 6.3 mV ADM6346/ADM6348 9.5 mV TIMING CHARACTERISTICS VCC to Reset Delay (tRD) 20 µs VCC = VTH to (VTH − 100 mV) Reset Active Timeout Period (tRP) 100 185 280 ms RESET OUTPUT VOLTAGE LOW, VOL 0.3 V VCC > 2.1 V, ISINK = 1.6 mA, reset asserted 0.4 V VCC ≥ 1.2 V, ISINK = 100 μA, reset asserted RESET OUTPUT VOLTAGE HIGH, VOH 0.8 × VCC V ADM6326 only, VCC = 3.2 V, ISOURCE = 500 µA 0.8 × VCC V ADM6326/ADM6346 only, VCC = 4.5 V, ISOURCE = 800 µA, VTH ≤ 4.38 V 0.8 × VCC V ADM6326/ADM6346 only, VCC = VTH(MAX), ISOURCE = 800 µA, VTH ≥ 4.5 V OPEN-DRAIN RESET OUTPUT LEAKAGE CURRENT 0.1 µA Table 2. Reset Threshold Voltage TA = 25°C TA = −40°C to +85°C Parameter Min Typ Max Min Max Unit RESET THRESHOLD VOLTAGE (VTH)1 ADM6326-22, ADM6328-22 2.167 2.2 2.233 2.145 2.25 V ADM6328-23 2.285 2.32 2.355 2.262 2.375 V ADM6328-25 2.462 2.5 2.537 2.437 2.562 V ADM6326-26 2.591 2.63 2.669 2.564 2.696 V ADM6326-27, ADM6328-27 2.66 2.7 2.741 2.633 2.768 V ADM6328-28 2.758 2.8 2.842 2.73 2.87 V ADM6326-29 2.886 2.93 2.974 2.857 3.0 V ADM6326-30 2.955 3.00 3.045 2.925 3.075 V ADM6326-31 3.034 3.08 3.126 3.003 3.15 V ADM6348-33 3.25 3.3 3.35 3.217 3.383 V ADM6348-34 3.349 3.4 3.451 3.315 3.485 V ADM6348-35 3.447 3.5 3.552 3.412 3.587 V ADM6348-36 3.546 3.6 3.654 3.51 3.69 V ADM6348-37 3.644 3.7 3.755 3.607 3.792 V ADM6348-38 3.743 3.8 3.857 3.705 3.895 V ADM6348-39 3.841 3.9 3.958 3.802 3.997 V ADM6348-40 3.94 4.0 4.06 3.9 4.1 V ADM6348-41 4.038 4.1 4.161 3.997 4.202 V ADM6348-42 4.137 4.2 4.263 4.095 4.305 V ADM6348-43 4.235 4.3 4.364 4.192 4.407 V ADM6348-44 4.314 4.38 4.446 4.27 4.489 V ADM6348-45 4.432 4.5 4.567 4.387 4.612 V ADM6346-46, ADM6348-46 4.56 4.63 4.699 4.514 4.746 V 1 Not all device options are released for sale as standard models. See the Ordering Guide for full details.

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ADM6326/ADM6328/ADM6346/ADM6348 Data Sheet Rev. B | Page 4 of 9 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Supply Voltage, VCC −0.3 V to +6 V Input Current, ICC 20 mA Output Voltage Push-Pull RESET −0.3 V to (VCC + 0.3 V) Open-Drain RESET −0.3 V to +6 V Output Current (RESET) 20 mA Rate of Rise of VCC 100 V/µs Temperature Storage −65°C to +155°C Operating −40°C to +85°C Soldering (10 sec) 300°C Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. THERMAL RESISTANCE θJA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 4. Thermal Resistance Package Type θJA Unit 3-Lead SOT-23 270 °C/W ESD CAUTION

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Data Sheet ADM6326/ADM6328/ADM6346/ADM6348 Rev. B | Page 5 of 9 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS RESET GND 1 2 VCC3 ADM6326/ ADM6328/ ADM6346/ ADM6348 TOP VIEW (Not to Scale) 08 05 2- 00 3 Figure 3. ADM6326/ADM6328/ADM6346/ADM6348 Pin Configuration Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 GND Ground Reference for All Signals; 0 V. 2 RESET Active Low Logic Output. This pin is low when VCC is less than the reset threshold; it remains low for 185 ms (typical) after VCC becomes greater than the reset threshold. 3 VCC Supply Voltage Being Monitored.

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ADM6326/ADM6328/ADM6346/ADM6348 Data Sheet Rev. B | Page 6 of 9 TYPICAL PERFORMANCE CHARACTERISTICS 08 05 2- 00 40 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 –40 –20 0 20 40 60 80 SU PP LY C U R R EN T (µ A ) TEMPERATURE (°C) VCC = 3.3V VCC = 5V VCC = 1.4V Figure 4. Supply Current vs. Temperature 08 05 2- 00 6 0 100 200 300 400 500 600 700 800 1 10 100 1000 M A XI M U M T R A N SI EN T D U R AT IO N (µ s) RESET THRESHOLD OVERDRIVE, VTH – VCC (mV) Figure 5. Maximum Transient Duration vs. Reset Threshold Overdrive 08 05 2- 00 7100 120 140 160 180 200 220 240 260 280 –40 –20 0 20 40 60 80 PO W ER -U P R ES ET T IM EO U T (m s) TEMPERATURE (°C) Figure 6. Power-Up Reset Timeout vs. Temperature 08 05 2- 00 5 PO W ER -D O W N R ES ET D EL AY (µ s) TEMPERATURE (°C) 0 50 100 150 200 250 –40 –20 0 20 40 8060 VOD = 10mV VOD = 100mV VOD = 20mV VOD = 200mV Figure 7. Power-Down Reset Delay vs. Temperature

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Data Sheet ADM6326/ADM6328/ADM6346/ADM6348 Rev. B | Page 7 of 9 THEORY OF OPERATION The ADM6326/ADM6328/ADM6346/ADM6348 are designed to protect the integrity of a system’s operation by ensuring the proper operation of the system during power-up, power-down, and brownout conditions. Ultralow supply currents make these devices particularly suitable for use in low power, portable equipment. RESET OUTPUT The ADM6326 and ADM6346 have an active low, push-pull reset output, whereas the ADM6328 and ADM6348 have an active low, open-drain reset output, which requires an external pull-up resistor. The RESET signal is guaranteed to be valid for VCC down to 1 V. When the ADM6326/ADM6328/ADM6346/ADM6348 are powered up, the RESET output remains low for a period typically equal to the RESET active timeout period of 185 ms. This feature allows adequate time for the system to power up correctly and for the power supply to stabilize before any devices are brought out of reset and are allowed to begin executing instructions. Initializing a system in this way provides a more reliable startup for micro- processor systems. When the monitored voltage falls below its associated threshold (VTH), RESET is asserted within 20 μs (typical). Asserting RESET this quickly means that the entire system can be reset at once before any part of the system’s voltage falls below its recommended operating voltage. This system reset can avoid dangerous and/or erroneous operation of a microprocessor based system. INTERFACING TO OTHER DEVICES The active low, open-drain reset output of the ADM6328 and ADM6348 makes these devices ideal for integration with devices such as microprocessors with bidirectional reset pins. Simply connect the RESET output of the ADM6328 or ADM6348 to the RESET input of the microprocessor using a single pull-up resistor to allow either device to initiate a system reset (see Figure 8). 08 05 2- 00 8 ADM6328/ADM6348 VCC VCC GND RESET MICROPROCESSOR SYSTEM VCC GND RPULL-UP RESET INPUT Figure 8. Interfacing to a Microprocessor with a Bidirectional Reset Pin TRANSIENT IMMUNITY To avoid unnecessary resets caused by fast power supply transients, the ADM6326/ADM6328/ADM6346/ADM6348 provide glitch immunity from negative-going VCC transients. Figure 5 shows the RESET comparator overdrive (that is, the maximum magnitude of negative-going pulses with respect to the typical threshold) vs. the pulse duration without a reset. 08 05 2- 00 9 VCC VCC VTH VTH tRDtRP VCC 0V 0V 1V RESET Figure 9. RESET Timing

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ADM6326/ADM6328/ADM6346/ADM6348 Data Sheet Rev. B | Page 8 of 9 OUTLINE DIMENSIONS 3.04 2.90 2.80 COMPLIANT TO JEDEC STANDARDS TO-236-AB 01 19 09 -C 1 2 3 SEATING PLANE 2.64 2.10 1.40 1.30 1.20 2.05 1.78 0.100 0.013 1.03 0.89 0.60 0.45 0.51 0.37 1.12 0.89 0.180 0.085 0.25 0.54 REFGAUGE PLANE 0.60 MAX 0.30 MIN 1.02 0.95 0.88 Figure 10. 3-Lead Small Outline Transistor Package [SOT-23-3] (RT-3) Dimensions shown in millimeters

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