MAX809 Series, MAX810 Series Very Low Supply Current 3−Pin Microprocessor Reset Monitors The MAX809 and MAX810 are cost−effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 10 msec of VCC falling through the reset voltage threshold. Reset is maintained active for a timeout period which is trimmed by the factory after VCC rises above the reset threshold. The MAX810 has an active−high RESET output while the MAX809 has an active−low RESET output. Both devices are available in SOT−23 and SC−70 packages. The MAX809/810 are optimized to reject fast transient glitches on the VCC line. Low supply current of 0.5 mA (VCC = 3.2 V) makes these devices suitable for battery powered applications. http://onsemi.com MARKING DIAGRAM 3 3 xxx MG G SOT−23 (TO−236) CASE 318 1 1 2 SC−70 (SOT−323) CASE 419 xx MG G 1 Features • Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V • • • • • • • • • Supplies Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps Four Guaranteed Minimum Power−On Reset Pulse Width Available (1 ms, 20 ms, 100 ms, and 140 ms) RESET Output Guaranteed to VCC = 1.0 V. Low Supply Current Compatible with Hot Plug Applications VCC Transient Immunity No External Components Wide Operating Temperature: −40°C to 105°C Pb−Free Packages are Available xxx = Specific Device Code M = Date Code G = Pb−Free Package (Note: Microdot may be in either location) PIN CONFIGURATION GND 1 3 RESET RESET Typical Applications • • • • 2 VCC 2 SOT−23/SC−70 (Top View) Computers Embedded Systems Battery Powered Equipment Critical Microprocessor Power Supply Monitoring NOTE: RESET is for MAX809 RESET is for MAX810 ORDERING INFORMATION VCC VCC MAX809/810 RESET RESET GND See detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. VCC PROCESSOR DEVICE MARKING INFORMATION RESET INPUT See general marking information in the device marking section on page 8 of this data sheet. GND Figure 1. Typical Application Diagram © Semiconductor Components Industries, LLC, 2007 February, 2007 − Rev. 15 1 Publication Order Number: MAX809S/D MAX809 Series, MAX810 Series PIN DESCRIPTION Pin No. Symbol 1 GND Description 2 RESET (MAX809) RESET output remains low while VCC is below the reset voltage threshold, and for a reset timeout period after VCC rises above reset threshold 2 RESET (MAX810) RESET output remains high while VCC is below the reset voltage threshold, and for a reset timeout period after VCC rises above reset threshold 3 VCC Ground Supply Voltage (Typ) ABSOLUTE MAXIMUM RATINGS Rating Power Supply Voltage (VCC to GND) Symbol Value Unit VCC −0.3 to 6.0 V −0.3 to (VCC + 0.3) V 20 mA RESET Output Voltage (CMOS) Input Current, VCC Output Current, RESET 20 mA dV/dt (VCC) 100 V/msec RqJA 301 314 °C/W Operating Junction Temperature Range TJ −40 to +105 °C Storage Temperature Range Tstg −65 to +150 °C Lead Temperature (Soldering, 10 Seconds) Tsol +260 °C Thermal Resistance, Junction−to−Air (Note 1) SOT−23 SC−70 ESD Protection Human Body Model (HBM): Following Specification JESD22−A114 Machine Model (MM): Following Specification JESD22−A115 Latchup Current Maximum Rating: Following Specification JESD78 Class II Positive Negative V 2000 200 ILatchup mA 200 200 Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. This based on a 35x35x1.6mm FR4 PCB with 10mm2 of 1 oz copper traces under natural convention conditions and a single component characterization. 2. The maximum package power dissipation limit must not be exceeded. TJ(max) * TA with TJ(max) = 150°C PD + RqJA http://onsemi.com 2 MAX809 Series, MAX810 Series ELECTRICAL CHARACTERISTICS TA = −40°C to +105°C unless otherwise noted. Typical values are at TA = +25°C. (Note 3) Characteristic Symbol VCC Range TA = 0°C to +70°C TA = −40°C to +105°C Min Typ Max 1.0 1.2 − − 5.5 5.5 Unit V Supply Current VCC = 3.3 V TA = −40°C to +85°C TA = 85°C to +105°C VCC = 5.5 V TA = −40°C to +85°C TA = 85°C to +105°C ICC Reset Threshold (Vin Decreasing) (Note 4) VTH mA − − 0.5 − 1.2 2.0 − − 0.8 − 1.8 2.5 V MAX809SN490 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 4.83 4.78 4.66 4.9 − − 4.97 5.02 5.14 MAX8xxLTR, MAX8xxSQ463 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 4.56 4.50 4.40 4.63 − − 4.70 4.75 4.86 MAX809HTR TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 4.48 4.43 4.32 4.55 4.62 4.67 4.78 MAX8xxMTR, MAX8xxSQ438 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 4.31 4.27 4.16 4.38 4.45 4.49 4.60 MAX809JTR, MAX8xxSQ400 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 3.94 3.90 3.80 4.00 − − 4.06 4.10 4.20 MAX8xxTTR, MAX809SQ308 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 3.04 3.00 2.92 3.08 − − 3.11 3.16 3.24 MAX8xxSTR, MAX8xxSQ293 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 2.89 2.85 2.78 2.93 − − 2.96 3.00 3.08 MAX8xxRTR, MAX8xxSQ263 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 2.59 2.56 2.49 2.63 − − 2.66 2.70 2.77 MAX809SN232, MAX809SQ232 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 2.28 2.25 2.21 2.32 − − 2.35 2.38 2.45 MAX809SN160 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 1.58 1.56 1.52 1.60 − − 1.62 1.64 1.68 MAX809SN120, MAX8xxSQ120 TA = +25°C TA = −40°C to +85°C TA = +85°C to +105°C 1.18 1.17 1.14 1.20 − − 1.22 1.23 1.26 3. Production testing done at TA = 25°C, over temperature limits guaranteed by design. 4. Contact your ON Semiconductor sales representative for other threshold voltage options. http://onsemi.com 3 MAX809 Series, MAX810 Series ELECTRICAL CHARACTERISTICS (continued) TA = −40°C to +105°C unless otherwise noted. Typical values are at TA = +25°C. (Note 5) Characteristic Symbol Detector Voltage Threshold Temperature Coefficient VCC to Reset Delay VCC = VTH to (VTH − 100 mV) Reset Active TimeOut Period (Note 6) MAX8xxSN(Q)293D1 MAX8xxSN(Q)293D2 MAX8xxSN(Q)293D3 MAX8xxSN(Q)293 tRP RESET Output Voltage Low (No Load) (MAX809) VCC = VTH − 0.2 V 1.6 V v VTH v 2.0 V, ISINK = 0.5 mA 2.1 V v VTH v 4.0 V, ISINK = 1.2 mA 4.1 V v VTH v 4.9 V, ISINK = 3.2 mA Min Typ Max Unit − 30 − ppm/°C − 10 − msec msec 1.0 20 100 140 − − − − 3.3 66 330 460 VOL − − 0.3 V RESET Output Voltage High (No Load) (MAX809) VCC = VTH + 0.2 V 1.6 V v VTH v 2.4 V, ISOURCE = 200 mA 2.5 V v VTH v 4.9 V, ISOURCE = 500 mA VOH 0.8 VCC − − V RESET Output Voltage High (No Load) (MAX810) VCC = VTH + 0.2 V 1.6 V v VTH v 2.4 V, ISOURCE = 200 mA 2.5 V v VTH v 4.9 V, ISOURCE = 500 mA VOH 0.8 VCC − − V RESET Output Voltage Low (No Load) (MAX810) VCC = VTH − 0.2 V 1.6 V v VTH v 2.0 V, ISINK = 0.5 mA 2.1 V v VTH v 4.0 V, ISINK = 1.2 mA 4.1 V v VTH v 4.9 V, ISINK = 3.2 mA VOL − − 0.3 V 5. Production testing done at TA = 25°C, over temperature limits guaranteed by design. 6. Contact your ON Semiconductor sales representative for timeout options availability for other threshold voltage options. http://onsemi.com 4 MAX809 Series, MAX810 Series TYPICAL OPERATING CHARACTERISTICS 0.6 0.35 VTH = 4.9 V 0.5 0.30 85°C SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) VTH = 1.2 V 0.4 25°C 0.3 −40°C 0.2 0.1 85°C 0.25 0.20 25°C 0.15 −40°C 0.10 0.05 0 0 0.5 1.5 2.5 3.5 5.5 4.5 6.5 0.5 1.5 SUPPLY VOLTAGE (V) Figure 2. Supply Current vs. Supply Voltage 85°C 0.30 SUPPLY CURRENT (mA) NORMALIZED THRESHOLD VOLTAGE VTH = 2.93 V 0.25 25°C 0.20 0.15 −40°C 0.10 0.05 0 1.5 2.5 3.5 3.5 4.5 5.5 6.5 Figure 3. Supply Current vs. Supply Voltage 0.35 0.5 2.5 SUPPLY VOLTAGE (V) 4.5 5.5 6.5 1.002 1.001 1.000 0.999 VTH = 4.9 V 0.998 0.997 0.996 VTH = 1.2 V 0.995 0.994 −50 −25 0 25 50 75 100 SUPPLY VOLTAGE (V) TEMPERATURE (°C) Figure 4. Supply Current vs. Supply Voltage Figure 5. Normalized Reset Threshold Voltage vs. Temperature 0.40 0.40 0.32 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) MAX809L/M, VCC = 5.0 V MAX809R/S/T, VCC = 3.3 V 0.24 0.16 0.08 0 −50 MAX809L/M/R/S/T, VCC = 1.0 V 0.32 MAX810L/M, VCC = 5.0 V 0.24 MAX810R/S/T, VCC = 3.3 V 0.16 MAX810L/M/R/S/T, VCC = 1.0 V 0.08 0 −25 0 25 50 75 100 −50 −25 0 25 50 75 100 TEMPERATURE (°C) TEMPERATURE (°C) Figure 6. Supply Current vs. Temperature (No Load, MAX809) Figure 7. Supply Current vs. Temperature (No Load, MAX810) http://onsemi.com 5 MAX809 Series, MAX810 Series TYPICAL OPERATING CHARACTERISTICS 80 OUTPUT VOLTAGE VCC−VOH (mV) OUTPUT VOLTAGE VCC (mV) 30 VTH = 4.90 V ISINK = 500 mA RESET ASSERTED 25 20 85°C 15 25°C 10 −40°C 5.0 70 VTH = 4.63 V ISOURCE = 100 mA RESET ASSERTED 60 50 85°C 40 25°C 30 −40°C 20 10 0 0 0.5 1.0 2.0 1.5 2.5 3.0 3.5 4.0 4.5 0.5 5.0 1.0 1.5 SUPPLY VOLTAGE (V) POWER−DOWN RESET DELAY (msec) VOD = VCC−VTH 100 75 VOD = 20 mV 50 VOD = 100 mV 25 VOD = 200 mV 0 −50 −25 0 25 50 2.5 3.0 3.5 4.0 4.5 75 100 125 400 VOD = VCC−VTH VOD = 10 mV 300 VOD = 20 mV 200 100 VOD = 100 mV VOD = 200 mV 0 −50 −25 0 25 50 75 100 TEMPERATURE (°C) TEMPERATURE (°C) Figure 10. Power−Down Reset Delay vs. Temperature and Overdrive (VTH = 1.2 V) Figure 11. Power−Down Reset Delay vs. Temperature and Overdrive (VTH = 4.9 V) 1.3 1.2 1.1 1.0 0.9 0.8 0.7 −50 5.0 Figure 9. Output Voltage High vs. Supply Voltage 125 NORMALIZED POWER−UP RESET TIMEOUT POWER−DOWN RESET DELAY (msec) Figure 8. Output Voltage Low vs. Supply Voltage VOD = 10 mV 2.0 SUPPLY VOLTAGE (V) −25 0 25 50 75 TEMPERATURE (°C) Figure 12. Normalized Power−Up Reset vs. Temperature http://onsemi.com 6 100 125 MAX809 Series, MAX810 Series APPLICATIONS INFORMATION VCC Transient Rejection maintained valid to VCC = 0 V, a pull−down resistor must be connected from RESET to ground to discharge stray capacitances and hold the output low (Figure 14). This resistor value, though not critical, should be chosen such that it does not appreciably load RESET under normal operation (100 kW will be suitable for most applications). The MAX809 provides accurate VCC monitoring and reset timing during power−up, power−down, and brownout/sag conditions, and rejects negative−going transients (glitches) on the power supply line. Figure 13 shows the maximum transient duration vs. maximum negative excursion (overdrive) for glitch rejection. Any combination of duration and overdrive which lies under the curve will not generate a reset signal. Combinations above the curve are detected as a brownout or power−down. Typically, transient that goes 100 mV below the reset threshold and lasts 5.0 ms or less will not cause a reset pulse. Transient immunity can be improved by adding a capacitor in close proximity to the VCC pin of the MAX809. VCC VCC MAX809/810 RESET RESET VCC R1 100 k GND VTH Overdrive Figure 14. Ensuring RESET Valid to VCC = 0 V Processors With Bidirectional I/O Pins MAXIMUM TRANSIENT DURATION (msec) Duration Some Microprocessor’s have bidirectional reset pins. Depending on the current drive capability of the processor pin, an indeterminate logic level may result if there is a logic conflict. This can be avoided by adding a 4.7 kW resistor in series with the output of the MAX809 (Figure 15). If there are other components in the system which require a reset signal, they should be buffered so as not to load the reset line. If the other components are required to follow the reset I/O of the Microprocessor, the buffer should be connected as shown with the solid line. 300 250 200 VTH = 4.9 V 150 VTH = 2.93 V 100 VTH = 1.2 V 50 BUFFER 0 10 BUFFERED RESET TO OTHER SYSTEM COMPONENTS VCC 60 110 160 210 260 310 360 410 RESET COMPARATOR OVERDRIVE (mV) VCC VCC MAX809/810 Figure 13. Maximum Transient Duration vs. Overdrive for Glitch Rejection at 25°C 4.7 k RESET RESET RESET Signal Integrity During Power−Down GND The MAX809 RESET output is valid to VCC = 1.0 V. Below this voltage the output becomes an “open circuit” and does not sink current. This means CMOS logic inputs to the Microprocessor will be floating at an undetermined voltage. Most digital systems are completely shutdown well above this voltage. However, in situations where RESET must be Microprocessor RESET GND Figure 15. Interfacing to Bidirectional Reset I/O http://onsemi.com 7 MAX809 Series, MAX810 Series ORDERING, MARKING AND THRESHOLD INFORMATION Part Number Description Marking Package Shipping † SAA SAA SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 SOT23−3 (Pb−Free) SOT23−3 (Pb−Free) SOT23−3 (Pb−Free) SOT23−3 (Pb−Free) SOT23−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) SC70−3 (Pb−Free) 3000 / Tape & Reel MAX809SN160T1 MAX809SN160T1G VTH* (V) 1.60 1.60 Timeout* (ms) 140−460 140−460 MAX809SN232T1 MAX809SN232T1G 2.32 2.32 140−460 140−460 SQP SQP MAX809RTR MAX809RTRG 2.63 2.63 140−460 140−460 SPS SPS MAX809STR MAX809STRG 2.93 2.93 140−460 140−460 SPT SPT MAX809TTR MAX809TTRG 3.08 3.08 140−460 140−460 SPU SPU MAX809JTR MAX809JTRG 4.00 4.00 140−460 140−460 SPR SPR MAX809MTR MAX809MTRG 4.38 4.38 140−460 140−460 SPV SPV MAX809HTR MAX809HTRG 4.55 4.55 140−460 140−460 SBD SBD MAX809LTR MAX809LTRG 4.63 4.63 140−460 140−460 SPW SPW MAX809SN490T1 MAX809SN490T1G 4.90 4.90 140−460 140−460 SBH SBH MAX809SN120T1G 1.20 140−460 MAX809SN293D1T1G 2.93 1−3.3 SSP MAX809SN293D2T1G 2.93 20−66 SSQ MAX809SN293D3T1G 2.93 100−330 SSR MAX809SQ120T1G 1.20 140−460 ZD MAX809SQ232T1G 2.32 140−460 ZE MAX809SQ263T1G 2.63 140−460 ZF MAX809SQ293T1G 2.93 140−460 ZG MAX809SQ308T1G 3.08 140−460 ZH MAX809SQ400T1G 4.00 140−460 SZ MAX809SQ438T1G 4.38 140−460 ZI MAX809SQ463T1G 4.63 140−460 ZJ MAX809SQ293D1T1G 2.93 1−3.3 ZK MAX809SQ293D2T1G 2.93 20−66 ZL MAX809SQ293D3T1G 2.93 100−330 ZM Push−Pull RESET SSO †For information on tape and reel specifications,including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *Contact your ON Semiconductor sales representative for other threshold voltage options. http://onsemi.com 8 MAX809 Series, MAX810 Series ORDERING, MARKING AND THRESHOLD INFORMATION Part Number MAX810RTR MAX810RTRG VTH* (V) 2.63 2.63 Timeout* (ms) 140−460 140−460 MAX810STR MAX810STRG 2.93 2.93 MAX810TTR MAX810TTRG Description Marking Package SPX SPX SOT23−3 SOT23−3 (Pb−Free) 140−460 140−460 SPY SPY SOT23−3 SOT23−3 (Pb−Free) 3.08 3.08 140−460 140−460 SPZ SPZ SOT23−3 SOT23−3 (Pb−Free) MAX810MTR MAX810MTRG 4.38 4.38 140−460 140−460 SQA SQA SOT23−3 SOT23−3 (Pb−Free) MAX810LTR MAX810LTRG 4.63 4.63 140−460 140−460 SQB SQB SOT23−3 SOT23−3 (Pb−Free) MAX810SN120T1G 1.20 140−460 SSS SOT23−3 (Pb−Free) MAX810SN293D1T1G 2.93 1−3.3 SST SOT23−3 (Pb−Free) MAX810SN293D2T1G 2.93 20−66 SSU SOT23−3 (Pb−Free) MAX810SN293D3T1G 2.93 100−330 SSZ SOT23−3 (Pb−Free) MAX810SQ120T1G 1.20 140−460 ZN SC70−3 (Pb−Free) MAX810SQ263T1G 2.63 140−460 ZO SC70−3 (Pb−Free) MAX810SQ293T1G 2.93 140−460 ZP SC70−3 (Pb−Free) MAX810SQ438T1G 4.38 140−460 ZQ SC70−3 (Pb−Free) MAX810SQ463T1G 4.63 140−460 ZR SC70−3 (Pb−Free) MAX810SQ293D1T1G 2.93 1−3.3 ZS SC70−3 (Pb−Free) MAX810SQ293D2T1G 2.93 20−66 ZT SC70−3 (Pb−Free) MAX810SQ293D3T1G 2.93 100−330 ZU SC70−3 (Pb−Free) Push−Pull RESET Shipping † 3000 / Tape & Reel †For information on tape and reel specifications,including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *Contact your ON Semiconductor sales representative for other threshold voltage options. http://onsemi.com 9 MAX809 Series, MAX810 Series PACKAGE DIMENSIONS SOT−23 (TO236) CASE 318−08 ISSUE AN D NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 4. 318−01 THRU −07 AND −09 OBSOLETE, NEW STANDARD 318−08. SEE VIEW C 3 HE E c 1 2 b DIM A A1 b c D E e L L1 HE 0.25 e q A L A1 L1 MIN 0.89 0.01 0.37 0.09 2.80 1.20 1.78 0.10 0.35 2.10 MILLIMETERS NOM MAX 1.00 1.11 0.06 0.10 0.44 0.50 0.13 0.18 2.90 3.04 1.30 1.40 1.90 2.04 0.20 0.30 0.54 0.69 2.40 2.64 VIEW C SOLDERING FOOTPRINT* 0.95 0.037 0.95 0.037 2.0 0.079 0.9 0.035 0.8 0.031 SCALE 10:1 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 10 MIN 0.035 0.001 0.015 0.003 0.110 0.047 0.070 0.004 0.014 0.083 INCHES NOM 0.040 0.002 0.018 0.005 0.114 0.051 0.075 0.008 0.021 0.094 MAX 0.044 0.004 0.020 0.007 0.120 0.055 0.081 0.012 0.029 0.104 MAX809 Series, MAX810 Series PACKAGE DIMENSIONS SC−70 (SOT−323) CASE 419−04 ISSUE M D NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. e1 3 E HE 1 DIM A A1 A2 b c D E e e1 L HE 2 b e 0.05 (0.002) c A2 A MIN 0.80 0.00 0.30 0.10 1.80 1.15 1.20 2.00 MILLIMETERS NOM MAX 0.90 1.00 0.05 0.10 0.7 REF 0.35 0.40 0.18 0.25 2.10 2.20 1.24 1.35 1.30 1.40 0.65 BSC 0.425 REF 2.10 2.40 MIN 0.032 0.000 0.012 0.004 0.071 0.045 0.047 0.079 INCHES NOM 0.035 0.002 0.028 REF 0.014 0.007 0.083 0.049 0.051 0.026 BSC 0.017 REF 0.083 MAX 0.040 0.004 0.016 0.010 0.087 0.053 0.055 0.095 L A1 SOLDERING FOOTPRINT* 0.65 0.025 0.65 0.025 1.9 0.075 0.9 0.035 0.7 0.028 SCALE 10:1 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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