19-1145; Rev 5; 4/08 5-Pin, Multiple-Input, Programmable Reset ICs The MAX6305–MAX6313 CMOS microprocessor (µP) supervisory circuits are designed to monitor more than one power supply. Ideal for monitoring both 5V and 3.3V in personal computer systems, these devices assert a system reset if any of the monitored supplies falls outside the programmed threshold. Low supply current (15µA) and a small package suit them for portable applications. The MAX6305–MAX6313 are specifically designed to ignore fast transients on any monitored supply. These devices are available in a SOT23-5 package, have factory-programmed reset thresholds from 2.5V to 5.0V (in 100mV increments), and feature four power-on reset timeout periods. Ten standard versions are available. Contact the factory for availability of non standard versions. Features o Small 5-Pin SOT23 Package o Precision Factory-Set VCC Reset Thresholds; Available in 0.1V Increments from 2.5V to 5V o Immune to Short VCC Transients o Guaranteed RESET Valid to VCC = 1V o Guaranteed Over Temperature o 8µA Supply Current o Factory-Set Reset Timeout Delay from 1ms (min) to 1120ms (min) o No External Components o Manual Reset Input o Under/Overvoltage Supply Monitoring Ordering Information PART† Applications TEMP RANGE PINPACKAGE Portable Computers MAX6305UK00D_-T -0°C to +70°C 5 SOT23 Computers MAX6305EUK00D_-T -40°C to +85°C 5 SOT23 Controllers Intelligent Instruments Portable/Battery-Powered Equipment Multivoltage Systems: 3V/5V, 5V/12V, 5V/24V Embedded Control Systems Pin Configurations and Typical Operating Circuit appear at end of data sheet. Ordering Information continued at end of data sheet. Standard Versions Table appears at end of data sheet. † The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/ MAX6313 are available with factory-set VCC reset thresholds from 2.5V to 5V, in 0.1V increments. Insert the desired nominal reset threshold (from Table 1) into the blanks following the letters UK. All parts also offer factory-programmed reset timeout periods. Insert the number corresponding to the desired nominal timeout period index following the “D” in the part number (D1 = 1ms min, D2 = 20ms min, D3 = 140ms min, and D4 = 1120ms min). There are 10 standard versions with a required order increment of 2,500 pieces. Sample stock is generally held on the standard versions only (see Standard Versions table). Required order increment is 10,000 pieces for non-standard versions. Contact factory for availability of non-standard versions. All devices available in tapeand-reel only. Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering. _______________________________________________________________Selector Table FACTORYADDITIONAL NEGATIVE/ MANUALSET RESET UNDERVOLTAGE OVERVOLTAGE RESET THRESHOLD RESET INPUTS RESET INPUT INPUT ON VCC PART OPEN-DRAIN RESET OUTPUT PUSH/PULL RESET OUTPUT PUSH/PULL RESET OUTPUT MAX6305 — — — 2 — — MAX6306 — — 1 — MAX6307 — — — 2 — — — 1 MAX6308 — MAX6309 — — 1 — MAX6310 — — — — 1 MAX6311 — 2 — MAX6312 — — 1 — MAX6313 — — 1 — — — — ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX6305–MAX6313 General Description MAX6305–MAX6313 5-Pin, Multiple-Input, Programmable Reset ICs ABSOLUTE MAXIMUM RATINGS VCC ...........................................................................-0.3V to +6V All Other Pins..............................................-0.3V to (VCC + 0.3V) Input/Output Current, All Pins .............................................20mA Rate of Rise, VCC ............................................................100V/µs Continuous Power Dissipation (TA = +70°C) SOT23-5 (derate 7.1mW/°C above +70°C).................571mW Operating Temperature Range MAX63_ _UK _ _D_-T.........................................0°C to +70°C MAX63_ _EUK _ _D_-T ...................................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°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 = +2.5V to +5.5V for the MAX6305/MAX6308/MAX6311, VCC = (VTH + 2.5%) to +5.5V for the MAX6306/MAX6307/MAX6309/ MAX6310/MAX6312/MAX6313; TA = -40°C to +85°C; unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL VCC Range Supply Current Reset Threshold (Note 3) CONDITIONS TA = -40°C to +85°C (Note 2) ICC MIN TYP 1.0 VTH MAX6306E/MAX6307/ MAX6309E/MAX6310E/ MAX6312E/MAX6313E UNITS 5.5 VCC = 5.5V MAX6306/MAX6307/ MAX6309/MAX6310/ MAX6312/MAX6313 MAX 8 16 TA = +25°C VTH 1.5% VTH VTH + 1.5% TA = 0°C to +70°C VTH 2.5% VTH VTH + 2.5% TA = -40°C to +85°C VTH 2.5% VTH VTH + 2.5% V Reset Threshold VTH/°C 40 ppm/°C Reset Threshold VTH HYST 2 x VTH mV Reset Timeout Period tRP D1 1.0 1.4 D2 20 28 40 D3 140 200 280 1120 1570 2240 D4 VOL RESET Output Voltage VOH VOL RESET Output Voltage VOH 2 MAX6305–MAX6310 2.0 VCC > 4.25V, ISINK = 3.2mA 0.4 VCC > 2.5V, ISINK = 1.2mA 0.3 VCC > 1.2V, ISINK = 500µA 0.3 VCC > 1.0V, ISINK = 50µA 0.3 VCC > 4.25V, MAX6308/MAX6309/ ISOURCE = 800µA MAX6310 VCC > 2.5V, ISOURCE = 500µA V 0.8 x VCC 0.4 VCC > 2.5V, ISINK = 1.2mA 0.3 VCC > 1.0V, ISOURCE = 10µA V VCC - 1.5 VCC > 4.25V, ISINK = 3.2mA MAX6311/MAX6312/ VCC > 1.8V, MAX6313 ISOURCE = 150µA ms 0.8 x VCC 0.8 x VCC _______________________________________________________________________________________ V 5-Pin, Multiple-Input, Programmable Reset ICs VCC = +2.5V to +5.5V for the MAX6305/MAX6308/MAX6311, VCC = (VTH + 2.5%) to +5.5V for the MAX6306/MAX6307/MAX6309/ MAX6310/MAX6312/MAX6313; TA = -40°C to +85°C; unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MANUAL-RESET INPUT (MAX6306/MAX6309/MAX6312) VIL VIH MR Input VIL VIH VTH > 4.0V VTH < 4.0V TA = 0°C to +70°C MR Minimum Input Pulse Width TA = -40°C to +85°C 0.8 2.4 0.3 x VCC V 0.7 x VCC 1 µs 1.5 MR Glitch Rejection 0.1 µs MR to Reset Delay 500 nsV MR Pullup Resistance 32 63.5 100 TA = +25°C 1.21 1.23 1.25 MAX6305–MAX6313, TA = 0°C to +70°C 1.20 1.26 MAX6305E–MAX6313E, TA = -40°C to +85°C 1.20 1.26 0V < VRST IN < VCC - 0.3V (Note 4) -25 +25 kΩ ADJUSTABLE RESET COMPARATOR INPUTS RST IN_/OVRST_IN Input Threshold RST IN_/OVRST_IN Input Current RST IN_/OVRST_IN Hysteresis VRSTH IRST IN_ 2.5 V nA mV Note 1: Overtemperature limits are guaranteed by design, not production tested. Note 2: The MAX6305/MAX6308/MAX6311 switch from undervoltage reset to normal operation between 1.5V < VCC < 2.5V. Note 3: The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 monitor VCC through an internal factory-trimmed voltage divider, which programs the nominal reset threshold. Factory-trimmed reset thresholds are available in approximately 100mV increments from 2.5V to 5V (Table 1). Note 4: Guaranteed by design. _______________________________________________________________________________________ 3 MAX6305–MAX6313 ELECTRICAL CHARACTERISTICS (continued) __________________________________________Typical Operating Characteristics (VCC = +5V, TA = +25°C, unless otherwise noted.) 7.0 VCC = 3.5V 5.5 40 30 20 10mV μs 10 VCC = 2.5V 5.0 -40 -20 0 20 40 60 80 40 30 20 -60 -40 -20 0 20 40 60 80 -60 100 -40 -20 0 20 40 60 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) RST IN_ FALLING PROPAGATION DELAY vs. TEMPERATURE RESET TIMEOUT vs. TEMPERATURE RESET THRESHOLD vs. TEMPERATURE NORMALIZED RESET TIMEOUT 1mV μs 80 60 40 10mV μs 20 1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 0 20 40 60 80 1.004 1.002 1.000 0.998 0.996 0.994 0.992 -40 -20 0 20 40 60 80 100 -60 -40 -20 TEMPERATURE (°C) MAXIMUM TRANSIENT DURATION vs. VCC RESET THRESHOLD OVERDRIVE 10,000 RESET OCCURS ABOVE LINES TRANSIENT DURATION (μs) 1000 VTH = 5.0V 100 VTH = 2.5V 20 40 60 MAXIMUM TRANSIENT DURATION vs. RST IN_ THRESHOLD OVERDRIVE 1000 100 0 TEMPERATURE (°C) MAXIMUM TRANSIENT DURATION vs. OVRST IN THRESHOLD OVERDRIVE 6305 TOC7 RESET OCCURS ABOVE LINES 100 1.006 0.990 -60 100 TEMPERATURE (°C) 10,000 80 1.008 10,000 RESET OCCURS ABOVE LINES TRANSIENT DURATION (μs) -20 6305 TOC8 -40 100 1.010 0.90 0 80 6305 TOC06 1.08 NORMALIZED RESET THRESHOLD (V/V) 1.10 6305 TOC04 100 10 10mV μs 10 0 100 120 -60 1mV μs 50 0 -60 RST IN_ PROPAGATION DELAY (ns) 6305 TOC02 50 6.0 60 VTH = 5.0V 10 6305 TOC9 7.5 60 70 PROPAGATION DELAY (ns) 8.0 1mV μs 6305 TOC05 SUPPLY CURRENT (μA) VCC = 4.5V 6.5 70 PROPAGATION DELAY (ns) VCC = 5.5V 8.5 80 6305 TOC01 9.5 9.0 OVRST IN RISING PROPAGATION DELAY vs. TEMPERATURE (OVERVOLTAGE RESET INPUT) VCC FALLING PROPAGATION DELAY vs. TEMPERATURE 6305 TOC03 SUPPLY CURRENT vs. TEMPERATURE TRANSIENT DURATION (μs) MAX6305–MAX6313 5-Pin, Multiple-Input, Programmable Reset ICs 1000 100 VTH = 5.0V VTH = 3.0V 10 VTH = 3.0V 1 400 800 OVERDRIVE, VTH - VCC (mV) 4 1 1 0 1200 0 400 800 OVERDRIVE, VOVRST IN - VREF (mV) 1200 0 400 800 OVERDRIVE, VREF - VRST IN (mV) _______________________________________________________________________________________ 1200 5-Pin, Multiple-Input, Programmable Reset ICs PIN MAX6305 MAX6308 MAX6311 1 MAX6306 MAX6309 MAX6312 1 MAX6307 MAX6310 MAX6313 NAME FUNCTION RESET Active-Low, Open-Drain Reset Output for the MAX6305/MAX6306/ MAX6307. Active-Low, Push/Pull Reset Output (sources and sinks current) for the MAX6308/MAX6309/MAX6310. RESET Active-High, Push/Pull Reset Output for the MAX6311/MAX6312/MAX6313 1 2 2 2 GND — 3 — MR 3, 4 — — RST IN1, RST IN2 — 4 3 RST IN — — 4 OVRST IN 5 5 5 VCC System Ground Manual-Reset Input. Pull low to force a reset. RESET/RESET remains active as long as MR is low and for the timeout period after MR goes high. Leave unconnected or connect to VCC if unused. Undervoltage Reset Comparator Input. Asserts reset when the monitored voltage falls below the programmed threshold. Set the reset threshold with an external resistor divider. Connect to VCC if unused. Overvoltage Reset Comparator Input. Asserts reset when the monitored voltage exceeds the programmed threshold. Set the reset threshold with an external resistor divider. Connect to GND if unused. System Supply. The MAX6306/MAX6307/MAX6309/MAX6310/ MAX6312/MAX6313 also monitor VCC through an internal factorytrimmed resistor divider to the reset comparator. _______________Detailed Description The MAX6305–MAX6313 CMOS microprocessor (µP) supervisory circuits are designed to monitor more than one power supply and issue a system reset when any monitored supply falls out of regulation. The MAX6305/ MAX6308/MAX6311 have two adjustable undervoltage reset inputs (RST IN1 and RST IN2). The MAX6306/ MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 monitor VCC through an internal, factory-trimmed voltage divider. The MAX6306/MAX6309/MAX6312 have, in addition, an adjustable undervoltage reset input and a manual-reset input. The internal voltage divider sets the reset threshold as specified in the device part number (Table 1). The MAX6307/MAX6310/ MAX6313 feature an adjustable undervoltage reset input (RST IN) and an adjustable overvoltage reset input (OVRST IN) in addition to the factory-trimmed reset threshold on the VCC monitor. Program the adjustable reset inputs with an external resistor divider (see Adjustable Reset Inputs section). Reset Outputs A µP’s reset input starts the µP in a known state. These µP supervisory circuits assert reset to prevent codeexecution errors during power-up, power-down, or brownout conditions. RESET (MAX6305–MAX6310) and RESET (MAX6311/ MAX6312/MAX6313) are guaranteed to be asserted at a valid logic level for V CC > 1V (see Electrical Characteristics). Once all monitored voltages exceed their programmed reset thresholds, an internal timer keeps reset asserted for the reset timeout period (tRP); after this interval, reset deasserts. If a brownout condition occurs (any or all monitored voltages dip outside their programmed reset threshold), reset asserts (RESET goes high; RESET goes low). Any time any of the monitored voltages dip below their reset threshold, the internal timer resets to zero and reset asserts. The internal timer starts when all of the monitored voltages return above their reset thresholds, and reset remains asserted for a reset timeout period. The MAX6305/MAX6306/MAX6307 feature an active-low, _______________________________________________________________________________________ 5 MAX6305–MAX6313 ______________________________________________________________Pin Description MAX6305–MAX6313 5-Pin, Multiple-Input, Programmable Reset ICs open-drain, N-channel output. The MAX6308/MAX6309/ MAX6310 feature an active-low, complementary output structure that both sinks and sources current, and the MAX6311/MAX6312/MAX6313 have an active-high complementary reset output. The MAX6305/MAX6308/MAX6311 switch from undervoltage lockout operation to normal operation between 1.5V < VCC < 2.5V. Below 1.5V, VCC undervoltagelockout mode asserts RESET. Above 2.5V, VCC normaloperation mode asserts reset if RST IN_ falls below the RST IN_ threshold. VCC * +1.23V RST IN1 RESET GENERATOR RESET** RESET*** † +1.23V +1.23V RST IN2 OVRST IN +1.23V MAX6305–MAX6313 †† VCC ††† MR GND * MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 ONLY ** MAX6305–MAX6310 ONLY *** MAX6311/MAX6312/MAX6313 ONLY † MAX6307/MAX6310/MAX6313 ONLY †† MAX6305/MAX6308/MAX6311 ONLY ††† MAX6306/MAX6309/MAX6312 ONLY Figure 1. Functional Diagram Manual-Reset Input (MAX6306/MAX6309/MAX6312) Many µP-based products require manual-reset capability, allowing an operator or external logic circuitry to initiate a reset. A logic low on MR asserts reset. Reset remains asserted while MR is low, and for a reset active timeout period (tRP) after MR returns high. This input has an internal 63.5kΩ pull-up resistor, so it can be left open if it is not used. MR can be driven with TTL-logic levels in 5V systems, with CMOS-logic levels in 3V systems, or with opendrain/collector output devices. Connect a normally open momentary switch from MR to GND to create a manualreset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environment, connecting a 0.1µF capacitor from MR to ground provides additional noise immunity. The MR pin has internal ESD-protection circuitry that may be forward biased under certain conditions, drawing excessive current. For example, assume the circuitry driving MR uses a +5V supply other than VCC. If VCC drops or browns out lower than +4.7V, MR’s absolute maximum rating is violated (-0.3V to (VCC + 0.3V)), and undesirable current flows through the ESD structure from MR to VCC. To avoid this, it is recommended that the supply for the MR pin be the same as the supply monitored by VCC. In this way, the voltage at MR will not exceed VCC. Adjustable Reset Inputs The MAX6305–MAX6313 each have one or more reset inputs (RST IN_ /OVRST IN). These inputs are compared to the internal reference voltage (Figure 1). Connect a resistor voltage divider to RST IN_ such that VRST IN_ falls below VRSTH (1.23V) when the monitored voltage (VIN) falls below the desired reset threshold (VTH) (Figure 2). Calculate the desired reset voltage with the following formula: R1 + R2 VTH = ________ x VRSTH R2 6 _______________________________________________________________________________________ 5-Pin, Multiple-Input, Programmable Reset ICs VCC R1 RST IN_ R2 ( ) R1 + R2 VTH = VRSTH R2 C* ( 1 R1 + R2 *ƒC = 2π R1 x R2 x C GND VCC VCC MAX6305– MAX6313 ) MAX6305 MAX6306 RESET MAX6307 RESET GENERATOR GND RESET μP GND *FOR ADDITIONAL NOISE IMMUNITY Figure 2. Increasing Noise Immunity Figure 3. Interfacing to µPs with Bidirectional Reset I/O The ±25nA max input leakage current allows resistors on the order of megohms. Choose the pull-up resistor in the divider to minimize the error due to the input leakage current. The error term in the calculated threshold is simply: Negative-Going VCC Transients In addition to issuing a reset to the µP during power-up, power-down, and brownout conditions, these devices are relatively immune to short-duration, negative-going VCC transients (glitches). The Typical Operating Characteristics show the Maximum Transient Duration vs. VCC Reset Threshold Overdrive, for which reset pulses are not generated. The graph was produced using negative-going pulses, starting at V TH max, and ending below the programmed reset threshold by the magnitude indicated (reset threshold overdrive). The graph shows the maximum pulse width that a negative-going VCC transient may typically have without causing a reset pulse to be issued. As the amplitude of the transient increases (i.e., goes farther below the reset threshold), the maximum allowable pulse width decreases. RST IN_/OVRST IN are also immune to negative/positivegoing transients (see Typical Operating Characteristics). A 0.1µF bypass capacitor mounted close to the RST IN_, OVRST IN, and/or the VCC pin provides additional transient immunity. ±25nA x R1 If you choose R1 to be 1MΩ, the resulting error is ±25 x 10-9 x 1 x 106 = ±25mV. Like the VCC voltage monitors on the MAX6306/MAX6307/ MAX6309/MAX6310/MAX6312/MAX6313, the RST IN_ inputs (when used with a voltage divider) are designed to ignore fast voltage transients. Increase the noise immunity by connecting a capacitor on the order of 0.1µF between RST IN and GND (Figure 2). This creates a single-pole lowpass filter with a corner frequency given by: f = (1/2π) / (R1 + R2)(R1 x R2 x C) For example, if R1 = 1MΩ and R2 = 1.6MΩ, adding a 0.1µF capacitor from RST IN_ to ground results in a lowpass corner frequency of f = 2.59Hz. Note that adding capacitance to RST IN slows the circuit’s overall response time. __________Applications Information Interfacing to µPs with Bidirectional Reset Pins Since the RESET output on the MAX6305/MAX6306/ MAX6307 is open drain, these devices interface easily with µPs that have bidirectional reset pins, such as the Motorola 68HC11. Connecting the µP supervisor’s RESET output directly to the microcontroller’s RESET pin with a single pull-up resistor allows either device to assert reset (Figure 3). Ensuring a Valid RESET/RESET Output Down to VCC = 0V When VCC falls below 1V, push/pull structured RESET/ RESET current sinking (or sourcing) capabilities decrease drastically. High-impedance CMOS-logic inputs connected to RESET can drift to undetermined voltages. This presents no problem in most applications, since most µPs and other circuitry do not operate with VCC below 1V. In those applications where RESET must be valid down to 0V, adding a pull-down resistor between RESET and ground sinks any stray leakage _______________________________________________________________________________________ 7 MAX6305–MAX6313 VIN MAX6305–MAX6313 5-Pin, Multiple-Input, Programmable Reset ICs currents, holding RESET low (Figure 4). The pull-down resistor’s value is not critical; 100kΩ is large enough not to load RESET and small enough to pull RESET to ground. For applications where RESET must be valid to VCC, a 100kΩ pull-up resistor between RESET and VCC will hold RESET high when VCC falls below 1V (Figure 5). Since the MAX6305/MAX6306/MAX6307 have opendrain, active-low outputs, they typically use a pull-up resistor. With these devices and under these conditions (V CC < 1V), RESET will most likely not maintain an active condition, but will drift toward a nonactive level due to the pull-up resistor and the RESET output’s reduction in sinking capability. These devices are not recommended for applications that require a valid RESET output below 1V. 00 TA = +25°C MIN TYP TA = -40°C to +85°C MAX Preprogrammed Threshold Not Available MIN MAX Preprogrammed Threshold Not Available 4.925 5.000 5.075 4.875 5.125 49 4.827 4.900 4.974 4.778 5.023 48 4.728 4.800 4.872 4.680 4.920 47 4.630 4.700 4.771 4.583 4.818 46 4.561 4.630 4.699 4.514 4.746 45 4.433 4.500 4.568 4.388 4.613 44 4.314 4.380 4.446 4.270 4.490 43 4.236 4.300 4.365 4.193 4.408 42 4.137 4.200 4.263 4.095 4.305 41 4.039 4.100 4.162 3.998 4.203 VCC 40 3.940 4.000 4.060 3.900 4.100 RESET 39 3.842 3.900 3.959 3.803 3.998 38 3.743 3.800 3.857 3.705 3.895 37 3.645 3.700 3.756 3.608 3.793 36 3.546 3.600 3.654 3.510 3.690 35 3.448 3.500 3.553 3.413 3.588 34 3.349 3.400 3.451 3.315 3.485 33 3.251 3.300 3.350 3.218 3.383 32 3.152 3.200 3.248 3.120 3.280 31 3.034 3.080 3.126 3.003 3.157 30 2.955 3.000 3.045 2.925 3.075 29 2.886 2.930 2.974 2.857 3.000 28 2.758 2.800 2.842 2.730 2.870 27 2.660 2.700 2.741 2.633 2.768 26 2.591 2.630 2.669 2.564 2.696 25 2.463 2.500 2.538 2.438 2.563 MAX6308 MAX6309 MAX6310 100k Figure 4. Ensuring RESET Valid to VCC = 0V VCC MAX6311 MAX6312 MAX6313 100k VCC GND SUFFIX 50 VCC GND Table 1. Factory-Trimmed Reset Thresholds* RESET * Factory-trimmed reset thresholds are available in approximately 100mV increments with a ±1.5% room-temperature variance. Figure 5. Ensuring RESET Valid to VCC = 0V 8 _______________________________________________________________________________________ 5-Pin, Multiple-Input, Programmable Reset ICs PART† MAX6306UK_ _D_-T TEMP RANGE PINPACKAGE -0°C to +70°C 5 SOT23 MAX6306EUK_ _D_-T -40°C to +85°C 5 SOT23 MAX6307UK_ _D_-T -0°C to +70°C 5 SOT23 MAX6307EUK_ _D_-T -40°C to +85°C 5 SOT23 MAX6308UK00D_-T -0°C to +70°C 5 SOT23 MAX6308EUK00D_-T -40°C to +85°C 5 SOT23 MAX6309UK_ _D_-T -0°C to +70°C 5 SOT23 MAX6309EUK_ _D_-T -40°C to +85°C 5 SOT23 MAX6310UK_ _D_-T -0°C to +70°C 5 SOT23 MAX6310EUK_ _D_-T -40°C to +85°C 5 SOT23 MAX6311UK00D_-T -0°C to +70°C 5 SOT23 MAX6311EUK00D_-T -40°C to +85°C 5 SOT23 MAX6312UK_ _D_-T -0°C to +70°C 5 SOT23 MAX6312EUK_ _D_-T -40°C to +85°C 5 SOT23 † The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/ MAX6313 are available with factory-set VCC reset thresholds from 2.5V to 5V, in 0.1V increments. Insert the desired nominal reset threshold (from Table 1) into the blanks following the letters UK. All parts also offer factory-programmed reset timeout periods. Insert the number corresponding to the desired nominal timeout period index following the “D” in the part number (D1 = 1ms min, D2 = 20ms min, D3 = 140ms min, and D4 = 1120ms min). There are 10 standard versions with a required order increment of 2,500 pieces. Sample stock is generally held on the standard versions only (see Standard Versions table). Required order increment is 10,000 pieces for non-standard versions. Contact factory for availability of non-standard versions. All devices available in tape-andreel only. Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering. Typical Operating Circuit 3.3V 3.3V VCC RESET RESET IN 5V MAX6309 RST IN μP MR GND Chip Information TRANSISTOR COUNT: 800 Standard Versions Table MAX6305UK00D3-T MAX6309UK29D3-T MAX6306UK29D3-T MAX6309UK46D3-T MAX6306UK46D3-T MAX6311UK00D3-T MAX6307UK46D3-T MAX6312UK29D3-T MAX6308UK00D3-T MAX6312UK46D3-T _______________________________________________________________________________________ 9 MAX6305–MAX6313 Ordering Information (continued) 5-Pin, Multiple-Input, Programmable Reset ICs MAX6305–MAX6313 Pin Configurations TOP VIEW (RESET) RESET 1 GND 2 5 VCC MAX6305 MAX6308 MAX6311 RST IN1 3 (RESET) RESET 1 GND 2 4 RST IN2 VCC MAX6306 MAX6309 MAX6312 MR 3 SOT23-5 ( ) ARE FOR MAX6311 5 (RESET) RESET 1 RST IN RST IN 3 SOT23-5 ( ) ARE FOR MAX6312 VCC 4 OVRST IN MAX6307 MAX6310 MAX6313 GND 2 4 5 SOT23-5 ( ) ARE FOR MAX6313 Package Information For the latest package outline information, go to www.maxim-ic.com/packages. 10 PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 5 SOT23 U5-1 21-0057 ______________________________________________________________________________________ 5-Pin, Multiple-Input, Programmable Reset ICs REVISION NUMBER REVISION DATE 0 9/96 1 8/98 Make corrections to EC table and Figures 1 and 8 3, 6, 8 2 4/99 Added Standard Versions Table and note to the Ordering Information table. Text added to the General Description 1, 13 3 11/05 Added lead-free option to the Ordering Information table. 4 12/07 Updated Table 2 and Package Outline 5 4/08 Added MAX6305E–MAX6313E to Ordering Information table, updated Electrical Characteristics table and global conditions, updated Table 1, and removed Table 2. DESCRIPTION Initial release PAGES CHANGED — 1, 13 9, 10, 14 1, 2, 3, 8–15 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc. MAX6305–MAX6313 Revision History