Click here for production status of specific part numbers. MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits General Description Features The MAX6381–MAX6390 microprocessor (μP) supervi- ● Factory-Set Reset Threshold Voltages Ranging from sory circuits monitor power-supply voltages from +1.8V +1.58V to +4.63V in Approximately 100mV Increments to +5.0V while consuming only 3μA of supply current at ● ±2.5% Reset Threshold Accuracy Over +1.8V. Whenever VCC falls below the factory-set reset Temperature (-40°C to +125°C) thresholds, the reset output asserts and remains asserted ● Seven Reset Timeout Periods Available: 1ms, 20ms, for a minimum reset timeout period after VCC rises above 140ms, 280ms, 560ms, 1120ms, 1200ms (min) the reset threshold. Reset thresholds are available from ● 3 Reset Output Options +1.58V to +4.63V, in approximately 100mV increments. • Active-Low Push-Pull Seven minimum reset timeout delays ranging from 1ms • Active-High Push-Pull to 1200ms are available. • Active-Low Open-Drain The MAX6381/MAX6384/MAX6387 have a push-pull active- ● Reset Output State Guaranteed Valid Down to VCC = 1V low reset output. The MAX6382/MAX6385/MAX6388 have ● Manual Reset Input (MAX6384/MAX6385/MAX6386) a push-pull active-high reset output, and the MAX6383/ ● Auxiliary RESET IN (MAX6387/MAX6388/MAX6389) MAX6386/MAX6389/MAX6390 have an open-drain active- low reset output. The MAX6384/MAX6385/MAX6386 also ● VCC Reset Timeout (1120ms or 1200ms)/Manual Reset Timeout (140ms or 150ms) (MAX6390) feature a debounced manual reset input (with internal pullup resistor). The MAX6387/MAX6388/MAX6389 have ● Negative-Going VCC Transient Immunity an auxiliary input for monitoring a second voltage. The ● Low Power Consumption of 6μA at +3.6V and 3μA at +1.8V MAX6390 offers a manual reset input with a longer VCC ● Pin Compatible with MAX809/MAX810/MAX803/ reset timeout period (1120ms or 1200ms) and a shorter MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/ manual reset timeout (140ms or 150ms). MAX6348, and MAX6711/MAX6712/MAX6713 The MAX6381/MAX6382/MAX6383 are available in 3-pin ● Tiny 3-Pin/4-Pin SC70 and 6-Pin μDFN Packages SC70 and 6-pin μDFN packages and the MAX6384– ● AEC-Q100 Qualified, Refer to Ordering Information MAX6390 are available in 4-pin SC70 and 6-pin μDFN for the Specific /V Trim Version packages. Ordering Information Applications ● Computers ● Critical μP and μC PIN- PART TEMP RANGE ● Controllers Power Monitoring PACKAGE ● Intelligent Instruments ● Portable/Battery- MAX6381LT_ _D_+T -40°C to +125°C 6 µDFN Powered Equipment MAX6381XR_ _D_+T -40°C to +125°C 3 SC70 ● Dual Voltage Systems MAX6381XR_ _D_/V+T -40°C to +125°C 3 SC70 MAX6381XR26D3/V+T -40°C to +125°C 3 SC70 Pin Configurations MAX6381XR46D2/V+T -40°C to +125°C 3 SC70 TOP VIEW Note: Insert reset threshold suffix (see Reset Threshold table) GND N.C. VCC after “XR”, “XS”, or “LT.” Insert reset timeout delay (see Reset 6 5 4 Timeout Delay table) after “D” to complete the part number. Sample stock is generally held on standard versions only (see GND 1 Standard Versions table). Standard versions have an order MAX6381 MAX6381 increment requirement of 2500 pieces. Nonstandard versions MAX6382 3 VCC MAX6382 have an order increment requirement of 10,000 pieces. MAX6383 RESET MAX6383 Contact factory for availability of nonstandard versions. (RESET) 2 +Denotes a lead(Pb)-free/RoHS-compliant package. SC70 1 2 3 /V denotes an automotive qualified part. RESET N.C. N.C Ordering Information continued at end of data sheet. ( ) IS FOR MAX6382 (RESET) µDFN Typical Operating Circuit appears at end of data sheet. Pin Configurations continued at end of data sheet. Selector Guide appears at end of data sheet. 19-1839; Rev 6; 3/18

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Absolute Maximum Ratings VCC to GND .........................................................-0.3V to +6.0V Continuous Power Dissipation (TA = +70°C) RESET Open-Drain Output ..................................-0.3V to +6.0V 3-Pin SC70 (derate 2.9mW/°C above +70°C) .............235mW RESET, RESET (push-pull output) ..........-0.3V to (VCC + 0.3V) 4-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW MR, RESET IN .........................................-0.3V to (VCC + 0.3V) 6-Pin μDFN (derate 2.1mW/°C above +70°C) .........167.7mW Input Current (VCC) ............................................................20mA Operating Temperature Range .........................-40°C to +125°C Output Current (all pins) .....................................................20mA Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (VCC = full range, TA = -40°C to +125°C, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range VCC 1.0 5.5 V VCC = 5.5V, no load 7 13 VCC = 3.6V, no load 6 11 VCC Supply Current ICC µA VCC = 2.5V, no load 4 7 VCC = 1.8V, no load 3 6 V(SCeCe RReesseett TThhrreesshhoolldds table) VTH TTAA == +-4205°°CC to +125°C VV12..TT55HH%% -- VVTTHH VV12TT..55HH%% ++ V Reset Threshold Tempco ΔVTH/°C 60 ppm/°C VCC to Reset Delay VtoC VCT fHa l-li n1g0 0amt 1V0mV/µs from VTH + 100mV 35 µs D1 1 2 D2 20 40 Reset Timeout Period D3 140 280 MAX6381–MAX6389 tRP D5 280 560 ms (See Reset Timeout table) D6 560 1120 D4 1120 2240 D7 1200 2400 D4 140 280 MR timeout period Reset Timeout Period D7 150 300 MAX6390 tRP D4 1120 2240 ms VCC timeout period D7 1200 2400 0.3 x VIL VCC VTH < 4V 0.7 x MR Input Voltage VIH VCC V VIL 0.8 VTH > 4V VIH 2.4 www.maximintegrated.com Maxim Integrated │ 2

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Electrical Characteristics (continued) (VCC = full range, TA = -40°C to +125°C, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MR Minimum Input Pulse Width 1 µs MR Glitch Rejection 100 ns MR to Reset Delay 200 ns MAX6381–MAX6389 32 63 100 kΩ MR Internal Pullup Resistance MAX6390 500 1560 3000 Ω TA = +25°C 1.245 1.27 1.295 RESET IN Input Threshold VTHRST TA = 0°C to +85°C 1.232 1.308 V TA = -40°C to +125°C 1.219 1.321 RESET IN to RESET Delay VRESETIN falling at 4mV/µs from 4.5 µs VTHRST + 40mV to VTHRST - 40mV RESET IN Input Leakage Current IRESET IN -50 ±1 +50 nA VCC ≥ 4.5V, ISINK = 3.2mA, reset asserted 0.4 Open-Drain RESET Output Voltage VOL VCC ≥ 2.5V, ISINK = 1.2mA, reset asserted 0.3 V VCC ≥ 1.0V, ISINK = 80µA, reset asserted 0.3 Open-Drain RESET Output Leakage Current ILKG VCC > VTH, RESET not asserted 1.0 µA VCC ≥ 4.5V, ISINK = 3.2mA, reset asserted 0.4 VOL VCC ≥ 2.5V, ISINK = 1.2mA, reset asserted 0.3 VCC ≥ 1.0V, ISINK = 80µA, reset asserted 0.3 Push-Pull RESET Output Voltage VCC ≥ 4.5V, ISOURCE = 800µA, reset not 0.8 x V asserted VCC VOH VCC ≥ 2.5V, ISOURCE = 500µA, reset not 0.8 x asserted VCC VCC ≥ 4.5V, ISOURCE = 800µA, reset 0.8 x asserted VCC VCC ≥ 2.5V, ISOURCE = 500µA, reset 0.8 x asserted VCC VOH VCC ≥ 1.8V, ISOURCE = 150µA, reset 0.8 x asserted VCC Push-Pull RESET Output Voltage V 0.8 x VCC ≥ 1.0V, ISOURCE = 1µA, reset asserted VCC VCC ≥ 4.5V, ISINK = 3.2mA, reset not 0.4 asserted VOL VCC ≥ 2.5V, ISINK = 1.2mA, reset not 0.3 asserted Note 1: Specifications over temperature are guaranteed by design, not production tested. www.maximintegrated.com Maxim Integrated │ 3

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Typical Operating Characteristics SUPPLY CURRENT vs. TEMPERATURE POWER-DOWN RESET DELAY NORMALIZED POWER-UP RESET TIMEOUT (NO LOAD) vs. TEMPERATURE vs. TEMPERATURE NT (µA) 6789 VCC = +5.5V VCC = +3.6V MAX6381/90 toc01 T DELAY (µs) 33447913 VCC = +3V MAX6381/90 toc02 MEOUT PERIOD 111...000648 MAX6381/90 toc03 RRE 5 ESE 35 T TI 1.02 SUPPLY CU 43 VCC = +2.5V VCC = +1.8V ER-DOWN R 3331 VCC = +1.8V LIZED RESE 01..9080 21 POW 2297 NORMA 0.96 0 25 0.94 -40 -25 -10 5 20 35 50 65 80 95 110125 -40 -25 -10 5 20 35 50 65 80 95 110125 -40 -25 -10 5 20 35 50 65 80 95 110125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) NORMALIZED RESET THRESHOLD OUTPUT-VOLTAGE LOW OUTPUT-VOLTAGE HIGH vs. TEMPERATURE vs. SINK CURRENT vs. SOURCE CURRENT SHOLD111...000112500 MAX6381/90 toc04 11..02 MAX6381/90 toc05 23..50 VCC = +2.5V MAX6381/90 toc06 E HR 0.8 2.0 T1.005 D RESET 1.000 V (V)OL 0.6 VCC = +3.0V V (V)OH 1.5 ALIZE0.995 0.4 1.0 VCC = +1.8V M0.990 R NO 0.2 VCC = +4.5V 0.5 0.985 0.990 0 0 -40 -25 -10 5 20 35 50 65 80 95 110125 0 3 6 9 12 0 250 500 750 1000 1250 1500 TEMPERATURE (°C) ISINK (mA) ISOURCE (µA) MAXIMUM TRANSIENT DURATION RESET IN TO RESET DELAY vs. RESET COMPARATOR OVERDRIVE vs. TEMPERATURE M TRANSIENT DURATION (µs) 234135245055500000000000 RABEOSEVTE TAHSISSE LRINTEED MAX6381/90 toc07 RESET IN DELAY (µs) 44444555........53179315 MAX6381/90 toc08 U XIM 100 3.9 A M 50 3.7 0 3.5 1 10 100 1000 -40 -25 -10 5 20 35 50 65 80 95 110125 RESET COMPARATOR OVERDRIVE, VTH - VCC (mV) TEMPERATURE (°C) www.maximintegrated.com Maxim Integrated │ 4

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Pin Description PIN 3-PIN SC70 4-PIN SC70 MAX6384/ NAME FUNCTION µDFN MAX6381/ MAX6387/ MAX6382 MAX6386/ MAX6385 MAX6388 MAX6383 MAX689 MAX6390 Active-High Push-Pull Reset Output. RESET changes from low to high when any monitored 1 voltage (VCC or VRESETIN) drops below the (MAX6382/ 2 — 2 — 2 RESET reset threshold or MR is pulled low. RESET MAX6385/ remains high for the reset timeout period MAX6388) after monitored voltages exceed the reset thresholds or MR is released. Active-Low Open-Drain/Push-Pull Reset Output. 1 RESET changes from high to low when any (MAX6381/ monitored voltage (VCC or VRESETIN) drops MAX6383/ below the reset threshold or MR is pulled low. MAX6384/ 2 — 2 — 2 — RESET RESET remains low for the reset timeout MAX6386/ period after the monitored voltages exceed the MAX6387/ reset thresholds or MR is released. Open-drain MAX6390) requires an external pullup resistor. 2, 3, 5 (MAX6381/ MAX6382/ MAX6383) — — — — — — N.C. No Connection. Not Internally connected. 2, 5 (MAX6384– MAX6390) Active-Low Manual Reset Input. Drive low to 3 force a reset. Reset remains active as long as (MAX6384/ MR is low and for the reset timeout period after MAX6385/ — — 3 3 — — MR MR is released. Leave unconnected or connect MAX6386/ to VCC if unused. MR has an internal 63kΩ MAX6390) (1.56kΩ for MAX6390) pullup resistor to VCC. Auxiliary Reset Input. High-impedance input to 3 the auxiliary reset comparator. Connect RESET (MAX6387/ RESET IN to the center point of an external resistor — — — — 3 3 MAX6388/ IN voltage-divider network to set the reset threshold MAX6389) voltage. Reset asserts when either VCC or RESET IN falls below its threshold voltage. 4 Supply Voltage for the device and input for (MAX6381– 3 3 4 4 4 4 VCC fixed VCC reset threshold monitor. MAX6390) 6 (MAX6381– 1 1 1 1 1 1 GND Ground MAX6390) www.maximintegrated.com Maxim Integrated │ 5

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Detailed Description Reset Thresholds (-40°C to +125°C) RESET Output SUFFIX VTH (min) VTH (nom) VTH (max) A μP reset input starts the μP in a known state. These μP 46 4.51 4.63 4.74 supervisory circuits assert reset to prevent code execu- 45 4.39 4.50 4.61 tion errors during power-up, power-down, or brownout 44 4.27 4.38 4.48 conditions. 43 4.19 4.30 4.41 Reset asserts when VCC is below the reset threshold; 42 4.10 4.20 4.31 once VCC exceeds the reset threshold, an internal timer 41 4.00 4.10 4.20 keeps the reset output asserted for the reset timeout 40 3.90 4.00 4.10 period. After this interval, reset output deasserts. Reset 39 3.80 3.90 4.00 output is guaranteed to be in the correct logic state for 38 3.71 3.80 3.90 VCC ≥ 1V. 37 3.61 3.70 3.79 Manual Reset Input (MAX6384/ 36 3.51 3.60 3.69 MAX6385/MAX6386/MAX6390) 35 3.41 3.50 3.59 Many μP-based products require manual reset capability, 34 3.32 3.40 3.49 allowing the operator, a test technician, or external logic 33 3.22 3.30 3.38 circuitry to initiate a reset. A logic low on MR asserts reset. 32 3.12 3.20 3.28 Reset remains asserted while MR is low, and for the reset active timeout period (tRP) after MR returns high. This 31 3.00 3.08 3.15 input has an internal 63kΩ pullup resistor (1.56kΩ for 30 2.93 3.00 3.08 MAX6390), so it can be left unconnected if it is not used. 29 2.85 2.93 3.00 MR can be driven with TTL or CMOS logic levels, or with 28 2.73 2.80 2.87 open-drain/collector outputs. Connect a normally open 27 2.63 2.70 2.77 momentary switch from MR to GND to create a manual- 26 2.56 2.63 2.69 reset function; external debounce circuitry is not required. 25 2.44 2.50 2.56 If MR is driven from long cables or if the device is used in 24 2.34 2.40 2.46 a noisy environment, connecting a 0.1μF capacitor from MR to GND provides additional noise immunity. 23 2.26 2.31 2.37 22 2.13 2.19 2.24 RESET IN Comparator 21 2.05 2.10 2.15 (MAX6387/MAX6388/MAX6389) 20 1.95 2.00 2.05 RESET IN is compared to an internal +1.27V reference. If 19 1.85 1.90 1.95 the voltage at RESET IN is less than 1.27V, reset asserts. 18 1.76 1.80 1.85 Use the RESET IN comparator as a user-adjustable 17 1.62 1.67 1.71 reset detector or as a secondary power-supply monitor by implementing a resistor-divider at RESET IN (shown 16 1.54 1.58 1.61 in Figure 1). Reset asserts when either VCC or RESET IN falls below its respective threshold voltage. Use the Applications Information following equation to set the threshold: Negative-Going VCC Transients VINTH = VTHRST (R1/R2 + 1) In addition to issuing a reset to the μP during power-up, where VTHRST = +1.27V. To simplify the resistor selec- power-down, and brownout conditions, the MAX6381– tion, choose a value of R2 and calculate R1: MAX6390 are relatively immune to short duration nega- R1 = R2 [(VINTH/VTHRST) - 1] tive-going VCC transients (glitches). Since the input current at RESET IN is 50nA (max), large The Typical Operating Characteristics section shows the values can be used for R2 with no significant loss in Maximum Transient Durations vs. Reset Comparator accuracy. Overdrive, for which the MAX6381–MAX6390 do not generate a reset pulse. This graph was generated using www.maximintegrated.com Maxim Integrated │ 6

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits VCC VCC VIN MAX6387 MAX6381 MAX6388 MAX6384 R1 MAX6389 MAX6387 RESET IN RESET RESET (RESET) R2 R1 GND 100k GND ( ) IS FOR MAX6388 Figure 1. RESET IN Configuration Figure 2. RESET Valid to VCC = Ground Circuit Reset Timeout Delay ensure that the reset line is valid while the reset output can no longer sink or source current. This scheme does SUFFIX MIN not work with the open-drain outputs of the MAX6383/ D1 1ms MAX6386/MAX6389/MAX6390. The resistor value used D2 20ms is not critical, but it must be small enough not to load the D3 140ms reset output when VCC is above the reset threshold. For D5 280ms most applications, 100kΩ is adequate. D6 560ms D4 1120ms D7 1200ms Standard Versions MAX6390_ _D4 1120/140ms* RESET MAX6390_ _D7 1200/150ms* PART RESET TIMEOUT THRESHOLD *The MAX6390 has a 1120ms or 1200ms RESET timeout and 46 a 140ms or 150ms manual reset timeout. 44 31 a negative-going pulse applied to VCC, starting above 29 the actual reset threshold and ending below it by the magnitude indicated (reset comparator overdrive). The MAX638_ 26 D3 graph indicates the typical maximum pulse width a 23 negative-going VCC transient may have without causing 22 a reset pulse to be issued. As the magnitude of the tran- 17 sient increases (goes farther below the reset threshold), 16 the maximum allowable pulse width decreases. A 0.1μF 46 capacitor mounted as close as possible to VCC provides 44 additional transient immunity. 31 Ensuring a Valid RESET 29 Output Down to VCC = 0V MAX6390 26 D4 The MAX6381–MAX6390 are guaranteed to operate 23 properly down to VCC = 1V. In applications that require 22 valid reset levels down to VCC = 0V, a pulldown resis- 17 tor to active-low outputs (push/pull only, Figure 2) and a 16 pullup resistor to active-high outputs (push/pull only) will www.maximintegrated.com Maxim Integrated │ 7

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Selector Guide PUSH-PULL PUSH-PULL OPEN-DRAIN MANUAL RESET PART NUMBER RESET IN ACTIVE-LOW ACTIVE-HIGH ACTIVE-LOW INPUT MR MAX6381 X MAX6382 X MAX6383 X MAX6384 X X MAX6385 X X MAX6386 X X MAX6390* X X MAX6387 X X MAX6388 X X MAX6389 X X *The MAX6390 offers a VCC reset timeout of 1120ms or 1200ms (min) and a manual reset timeout of 140ms or 150ms (min). Typical Operating Circuit Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE I/O SUPPLY VCORE MAX6382LT_ _D_+T -40°C to +125°C 6 µDFN MAX6382XR_ _D_+T -40°C to +125°C 3 SC70 R1 VCC MAX6383LT_ _D_+T -40°C to +125°C 6 µDFN RESET IN ** CORE I/O MAX6383XR_ _D_+T -40°C to +125°C 3 SC70 R1 VOLTAGEVOLTAGE MAX6384LT_ _D_+T -40°C to +125°C 6 µDFN MAX6381–MAX6390 P MAX6384XS_ _D_+T -40°C to +125°C 4 SC70 MR * RESET RESET MAX6385LT_ _D_+T -40°C to +125°C 6 µDFN (RESET) INPUT MAX6385XS_ _D_+T -40°C to +125°C 4 SC70 GND GND MAX6386LT_ _D_+T -40°C to +125°C 6 µDFN MAX6386XS_ _D_+T -40°C to +125°C 4 SC70 PUSHBUTTON SWITCH MAX6387LT_ _D_+T -40°C to +125°C 6 µDFN MAX6387XS_ _D_+T -40°C to +125°C 4 SC70 *MR is for MAX6384/MAX6385/MAX6386/MAX6390 MAX6388LT_ _D_+T -40°C to +125°C 6 µDFN **RESET IN is for MAX6387/MAX6388/MAX6389 MAX6388XS_ _D_+T -40°C to +125°C 4 SC70 ( ) are for MAX6382/MAX6385/MAX6388 MAX6389LT_ _D_+T -40°C to +125°C 6 µDFN MAX6389XS_ _D_+T -40°C to +125°C 4 SC70 MAX6389XS30D2/V+T -40°C to +125°C 4 SC70 MAX6389XS31D1/V+T -40°C to +125°C 4 SC70 MAX6389XS32D1/V+T -40°C to +125°C 4 SC70 MAX6390LT_ _D_+T -40°C to +125°C 6 µDFN MAX6390XS_ _D_+T* -40°C to +125°C 4 SC70 Note: Insert reset threshold suffix (see Reset Threshold table) after “XR”, “XS”, or “LT.” Insert reset timeout delay (see Reset Timeout Delay table) after “D” to complete the part number. Sample stock is generally held on standard versions only (see Standard Versions table). Standard versions have an order increment requirement of 2500 pieces. Nonstandard versions have an order increment requirement of 10,000 pieces. Contact factory for availability of nonstandard versions. *MAX6390 is available with D4 or D7 timing only. +Denotes a lead(Pb)-free/RoHS-compliant package. www.maximintegrated.com Maxim Integrated │ 8

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Pin Configurations (continued) TOP VIEW GND N.C. VCC 6 5 4 GND 1 4 VCC MAX6384 MAX6384 MAX6385 MAX6385 MAX6386 MAX6386 MAX6390 MAX6390 RESET 1 2 3 2 (RESET) 3 MR RESET N.C. MR (RESET) µDFN SC70 ( ) IS FOR MAX6385 ( ) IS FOR MAX6385 GND N.C. VCC 6 5 4 GND 1 4 VCC MAX6387 MAX6387 MAX6388 MAX6388 MAX6389 MAX6389 RESET 1 2 3 2 (RESET) 3 RESET IN RESET N.C. RESET IN (RESET) µDFN SC70 ( ) IS FOR MAX6388 ( ) IS FOR MAX6388 Chip Information Package Information PROCESS: BiCMOS For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE PACKAGE DOCUMENT LAND PATTERN TYPE CODE NO. NO. 3 SC70 X3+2 21-0075 90-0208 4 SC70 X4+1 21-0098 90-0187 6 FDFN L611+1 21-0147 90-0080 www.maximintegrated.com Maxim Integrated │ 9

MAX6381–MAX6390 SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits Revision History REVISION REVISION PAGES DESCRIPTION NUMBER DATE CHANGED 0 10/00 Initial release — 3 12/05 Added lead-free notation to Ordering Information. 1, 8 4 4/07 Added µDFN package to data sheet. 1, 2, 5, 7–13 5 7/12 Added automotive package to Ordering Information. 1 6 3/18 Updated Ordering Information table 1, 8 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2018 Maxim Integrated Products, Inc. │ 10

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M axim Integrated: MAX6390LT18D4+T MAX6390LT18D7+T MAX6390LT19D4+T MAX6390LT19D7+T MAX6390LT20D4+T MAX6390LT20D7+T MAX6390LT21D4+T MAX6390LT21D7+T MAX6390LT22D4+T MAX6390LT22D7+T MAX6390LT23D4+T MAX6390LT23D7+T MAX6390LT24D4+T MAX6390LT24D7+T MAX6390LT25D4+T MAX6390LT25D7+T MAX6390LT26D4+T MAX6390LT26D7+T MAX6390LT27D4+T MAX6390LT27D7+T MAX6390LT28D4+T MAX6390LT28D7+T MAX6390LT29D4+T MAX6390LT29D7+T MAX6390LT30D4+T MAX6390LT30D7+T MAX6390LT31D4+T MAX6390LT31D7+T MAX6390LT32D4+T MAX6390LT32D7+T MAX6390LT33D4+T MAX6390LT33D7+T MAX6390LT34D4+T MAX6390LT34D7+T MAX6390LT35D4+T MAX6390LT35D7+T MAX6390LT36D4+T MAX6390LT36D7+T MAX6390LT37D4+T MAX6390LT37D7+T MAX6390LT38D4+T MAX6390LT38D7+T MAX6390LT39D4+T MAX6390LT39D7+T MAX6390LT40D4+T MAX6390LT40D7+T MAX6390LT41D4+T MAX6390LT41D7+T MAX6390LT42D4+T MAX6390LT42D7+T MAX6390LT43D4+T MAX6390LT43D7+T MAX6390LT44D4+T MAX6390LT44D7+T MAX6390LT45D4+T MAX6390LT45D7+T MAX6390LT46D4+T MAX6390LT46D7+T MAX6390XS16D4+T MAX6390XS16D7+T MAX6390XS17D4+T MAX6390XS17D7+T MAX6390XS18D4+T MAX6390XS18D7+T MAX6390XS19D4+T MAX6390XS19D7+T MAX6390XS20D4+T MAX6390XS20D7+T MAX6390XS21D4+T MAX6390XS21D7+T MAX6390XS22D4+T MAX6390XS22D7+T MAX6390XS23D4+T MAX6390XS23D7+T MAX6390XS24D4+T MAX6390XS24D7+T MAX6390XS25D4+T MAX6390XS25D7+T MAX6390XS26D4+T MAX6390XS26D7+T MAX6390XS27D4+T MAX6390XS27D7+T MAX6390XS28D4+T MAX6390XS28D7+T MAX6390XS29D4+T MAX6390XS29D7+T MAX6390XS30D4+T MAX6390XS30D7+T MAX6390XS31D4+T MAX6390XS31D7+T MAX6390XS32D4+T MAX6390XS32D7+T MAX6390XS33D4+T MAX6390XS33D7+T MAX6390XS34D4+T MAX6390XS34D7+T MAX6390XS35D4+T MAX6390XS35D7+T MAX6390XS36D4+T MAX6390XS36D7+T