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19-1145; Rev 5; 4/08
5-Pin, Multiple-Input, Programmable Reset ICs
General Description
The MAX6305-MAX6313 CMOS microprocessor (P) 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 (15A) 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 8A 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
MAX6305-MAX6313
Ordering Information
PART MAX6305UK00D_-T MAX6305EUK00D_-T TEMP RANGE -0C to +70C -40C to +85C PINPACKAGE 5 SOT23 5 SOT23
Applications
Portable Computers Computers 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
PART MAX6305 MAX6306 MAX6307 MAX6308 MAX6309 MAX6310 MAX6311 MAX6312 MAX6313 OPEN-DRAIN RESET OUTPUT -- -- -- -- -- -- PUSH/PULL RESET OUTPUT -- -- -- -- -- -- PUSH/PULL RESET OUTPUT -- -- -- -- -- -- FACTORYADDITIONAL NEGATIVE/ MANUALSET RESET UNDERVOLTAGE OVERVOLTAGE RESET THRESHOLD RESET INPUTS RESET INPUT INPUT ON VCC -- -- -- 2 1 1 2 1 1 2 1 1 -- -- -- -- -- -- -- -- -- -- -- -- 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.
5-Pin, Multiple-Input, Programmable Reset ICs MAX6305-MAX6313
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/s Continuous Power Dissipation (TA = +70C) SOT23-5 (derate 7.1mW/C above +70C).................571mW Operating Temperature Range MAX63_ _UK _ _D_-T.........................................0C to +70C MAX63_ _EUK _ _D_-T ...................................-40C to +85C Storage Temperature Range .............................-65C to +160C Lead Temperature (soldering, 10sec) .............................+300C
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 = -40C to +85C; unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER VCC Range Supply Current ICC SYMBOL VCC = 5.5V MAX6306/MAX6307/ MAX6309/MAX6310/ MAX6312/MAX6313 VTH MAX6306E/MAX6307/ MAX6309E/MAX6310E/ MAX6312E/MAX6313E Reset Threshold Reset Threshold VTH/C VTH HYST D1 Reset Timeout Period tRP D2 D3 D4 VCC > 4.25V, ISINK = 3.2mA VOL RESET Output Voltage VOH MAX6305-MAX6310 VCC > 2.5V, ISINK = 1.2mA VCC > 1.2V, ISINK = 500A VCC > 1.0V, ISINK = 50A VCC > 4.25V, MAX6308/MAX6309/ ISOURCE = 800A MAX6310 VCC > 2.5V, ISOURCE = 500A VCC > 4.25V, ISINK = 3.2mA VCC > 2.5V, ISINK = 1.2mA MAX6311/MAX6312/ VCC > 1.8V, MAX6313 ISOURCE = 150A VCC > 1.0V, ISOURCE = 10A 0.8 x VCC 0.8 x VCC VCC - 1.5 V 0.8 x VCC 0.4 0.3 V 1.0 20 140 1120 TA = +25C TA = 0C to +70C VTH 1.5% VTH 2.5% VTH 2.5% CONDITIONS TA = -40C to +85C (Note 2) MIN 1.0 8 VTH VTH TYP MAX 5.5 16 VTH + 1.5% VTH + 2.5% VTH + 2.5% ppm/C mV 2.0 40 280 2240 0.4 0.3 0.3 0.3 V ms V UNITS
Reset Threshold (Note 3)
TA = -40C to +85C
VTH 40 2 x VTH 1.4 28 200 1570
VOL RESET Output Voltage VOH
2
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5-Pin, Multiple-Input, Programmable Reset ICs
ELECTRICAL CHARACTERISTICS (continued)
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 = -40C to +85C; unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER SYMBOL VIL MR Input VIH VIL VIH MR Minimum Input Pulse Width MR Glitch Rejection MR to Reset Delay MR Pullup Resistance ADJUSTABLE RESET COMPARATOR INPUTS RST IN_/OVRST_IN Input Threshold RST IN_/OVRST_IN Input Current RST IN_/OVRST_IN Hysteresis TA = +25C VRSTH MAX6305-MAX6313, TA = 0C to +70C MAX6305E-MAX6313E, TA = -40C to +85C IRST IN_ 0V < VRST IN < VCC - 0.3V (Note 4) 1.21 1.20 1.20 -25 2.5 1.23 1.25 1.26 1.26 +25 nA mV V 32 CONDITIONS MIN TYP MAX 0.8 2.4 0.3 x VCC 0.7 x VCC 1 1.5 0.1 500 63.5 100 s s nsV k V UNITS
MAX6305-MAX6313
MANUAL-RESET INPUT (MAX6306/MAX6309/MAX6312) VTH > 4.0V VTH < 4.0V TA = 0C to +70C TA = -40C to +85C
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.
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5-Pin, Multiple-Input, Programmable Reset ICs MAX6305-MAX6313
__________________________________________Typical Operating Characteristics
(VCC = +5V, TA = +25C, unless otherwise noted.)
OVRST IN RISING PROPAGATION DELAY vs. TEMPERATURE (OVERVOLTAGE RESET INPUT)
6305 TOC02 6305 TOC03
SUPPLY CURRENT vs. TEMPERATURE
9.0 SUPPLY CURRENT (A) 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) VCC = 2.5V VCC = 3.5V VCC = 4.5V VCC = 5.5V
6305 TOC01
VCC FALLING PROPAGATION DELAY vs. TEMPERATURE
80 70 PROPAGATION DELAY (ns) 60 50 40 30 20 10 0 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) 10mV s 1mV s 70 60 PROPAGATION DELAY (ns) 50 40 30 20 10 0 -60
9.5
1mV s
10mV s
-40
-20
0
20
40
60
80
100
TEMPERATURE (C)
RST IN_ FALLING PROPAGATION DELAY vs. TEMPERATURE
6305 TOC04
RESET TIMEOUT vs. TEMPERATURE
6305 TOC05
RESET THRESHOLD vs. TEMPERATURE
NORMALIZED RESET THRESHOLD (V/V) 1.008 1.006 1.004 1.002 1.000 0.998 0.996 0.994 0.992 0.990 -60 -40 -20 0 20 40 60 80 100
6305 TOC06
120 RST IN_ PROPAGATION DELAY (ns) 100 80 60 40 20 0 -60 -40 -20 0 20 40 60 80 10mV s
1.10 1.08 NORMALIZED RESET TIMEOUT 1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 0.90
1.010
1mV s
100
-60
-40
-20
0
20
40
60
80
100
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
MAXIMUM TRANSIENT DURATION vs. VCC RESET THRESHOLD OVERDRIVE
6305 TOC7
MAXIMUM TRANSIENT DURATION vs. OVRST IN THRESHOLD OVERDRIVE
6305 TOC8
MAXIMUM TRANSIENT DURATION vs. RST IN_ THRESHOLD OVERDRIVE
RESET OCCURS ABOVE LINES TRANSIENT DURATION (s) 1000
6305 TOC9
10,000 RESET OCCURS ABOVE LINES TRANSIENT DURATION (s) 1000 VTH = 5.0V 100
10,000 RESET OCCURS ABOVE LINES TRANSIENT DURATION (s) 1000
10,000
100
VTH = 5.0V
100
VTH = 5.0V VTH = 3.0V
10
VTH = 2.5V
10 VTH = 3.0V
10
1 0 400 800 1200 OVERDRIVE, VTH - VCC (mV)
1 0 400 800 1200 OVERDRIVE, VOVRST IN - VREF (mV)
1 0 400 800 1200 OVERDRIVE, VREF - VRST IN (mV)
4
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5-Pin, Multiple-Input, Programmable Reset ICs
______________________________________________________________Pin Description
PIN MAX6305 MAX6308 MAX6311 MAX6306 MAX6309 MAX6312 MAX6307 MAX6310 MAX6313 NAME FUNCTION
MAX6305-MAX6313
RESET 1 1 1 RESET 2 -- 2 3 2 -- GND MR
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. Active-High, Push/Pull Reset Output for the MAX6311/MAX6312/MAX6313 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.
3, 4 -- --
-- 4 --
-- 3 4
RST IN1, RST IN2 RST IN OVRST IN
5
5
5
VCC
_______________Detailed Description
The MAX6305-MAX6313 CMOS microprocessor (P) 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 P's reset input starts the P in a known state. These P 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
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5-Pin, Multiple-Input, Programmable Reset ICs MAX6305-MAX6313
VCC *
+1.23V
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.
RESET** RESET***
RST IN1
RESET GENERATOR
Manual-Reset Input (MAX6306/MAX6309/MAX6312)
Many P-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 63.5k 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 0.1F 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.
+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
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
Figure 1. Functional Diagram
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5-Pin, Multiple-Input, Programmable Reset ICs MAX6305-MAX6313
VIN R1 VCC VCC VCC
MAX6305- MAX6313
RST IN_ R1 + R2 VTH = VRSTH R2 GND 1 R1 + R2 *C = 2 R1 x R2 x C
R2
(
)
MAX6305 MAX6306 RESET MAX6307
RESET GENERATOR GND
RESET
C*
P
GND
(
)
*FOR ADDITIONAL NOISE IMMUNITY
Figure 2. Increasing Noise Immunity
Figure 3. Interfacing to Ps 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: 25nA x R1 If you choose R1 to be 1M, 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 0.1F between RST IN and GND (Figure 2). This creates a single-pole lowpass filter with a corner frequency given by: f = (1/2) / (R1 + R2)(R1 x R2 x C) For example, if R1 = 1M and R2 = 1.6M, adding a 0.1F 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 Ps with Bidirectional Reset Pins
Since the RESET output on the MAX6305/MAX6306/ MAX6307 is open drain, these devices interface easily with Ps that have bidirectional reset pins, such as the Motorola 68HC11. Connecting the P 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).
Negative-Going VCC Transients In addition to issuing a reset to the P 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 0.1F bypass capacitor mounted close to the RST IN_, OVRST IN, and/or the VCC pin provides additional transient immunity. 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 Ps 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
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7
5-Pin, Multiple-Input, Programmable Reset ICs MAX6305-MAX6313
currents, holding RESET low (Figure 4). The pull-down resistor's value is not critical; 100k 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 100k 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.
Table 1. Factory-Trimmed Reset Thresholds*
SUFFIX TA = +25C MIN TYP MAX TA = -40C to +85C MIN MAX Preprogrammed Threshold Not Available 4.875 4.778 4.680 4.583 4.514 4.388 4.270 4.193 4.095 3.998 3.900 3.803 3.705 3.608 3.510 3.413 3.315 3.218 3.120 3.003 2.925 2.857 2.730 2.633 2.564 2.438 5.125 5.023 4.920 4.818 4.746 4.613 4.490 4.408 4.305 4.203 4.100 3.998 3.895 3.793 3.690 3.588 3.485 3.383 3.280 3.157 3.075 3.000 2.870 2.768 2.696 2.563
00 50 49 48 47 46 45 44
Preprogrammed Threshold Not Available 4.925 4.827 4.728 4.630 4.561 4.433 4.314 4.236 4.137 4.039 3.940 3.842 3.743 3.645 3.546 3.448 3.349 3.251 3.152 3.034 2.955 2.886 2.758 2.660 2.591 2.463 5.000 4.900 4.800 4.700 4.630 4.500 4.380 4.300 4.200 4.100 4.000 3.900 3.800 3.700 3.600 3.500 3.400 3.300 3.200 3.080 3.000 2.930 2.800 2.700 2.630 2.500 5.075 4.974 4.872 4.771 4.699 4.568 4.446 4.365 4.263 4.162 4.060 3.959 3.857 3.756 3.654 3.553 3.451 3.350 3.248 3.126 3.045 2.974 2.842 2.741 2.669 2.538
VCC
43 42 41
MAX6308 MAX6309 MAX6310
VCC GND RESET 100k
40 39 38 37 36 35
Figure 4. Ensuring RESET Valid to VCC = 0V
34 33 32 31 30
100k
VCC
MAX6311 MAX6312 MAX6313
VCC GND RESET
29 28 27 26 25
* 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
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5-Pin, Multiple-Input, Programmable Reset ICs
Ordering Information (continued)
PART MAX6306UK_ _D_-T MAX6306EUK_ _D_-T MAX6307UK_ _D_-T MAX6307EUK_ _D_-T MAX6308UK00D_-T MAX6308EUK00D_-T MAX6309UK_ _D_-T MAX6309EUK_ _D_-T MAX6310UK_ _D_-T MAX6310EUK_ _D_-T MAX6311UK00D_-T MAX6311EUK00D_-T MAX6312UK_ _D_-T MAX6312EUK_ _D_-T TEMP RANGE -0C to +70C -40C to +85C -0C to +70C -40C to +85C -0C to +70C -40C to +85C -0C to +70C -40C to +85C -0C to +70C -40C to +85C -0C to +70C -40C to +85C -0C to +70C -40C to +85C PINPACKAGE 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23 5 SOT23
GND RST IN MR 5V 3.3V VCC 3.3V
Typical Operating Circuit
MAX6305-MAX6313
RESET
RESET IN
MAX6309
P
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.
Chip Information
TRANSISTOR COUNT: 800
Standard Versions Table
MAX6305UK00D3-T MAX6306UK29D3-T MAX6306UK46D3-T MAX6307UK46D3-T MAX6308UK00D3-T MAX6309UK29D3-T MAX6309UK46D3-T MAX6311UK00D3-T MAX6312UK29D3-T MAX6312UK46D3-T
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9
5-Pin, Multiple-Input, Programmable Reset ICs MAX6305-MAX6313
Pin Configurations
TOP VIEW
(RESET) RESET 1
5
VCC
(RESET) RESET 1
5
VCC
(RESET) RESET 1
5
VCC
GND 2
MAX6305 MAX6308 MAX6311
4 RST IN2
GND 2
MAX6306 MAX6309 MAX6312
4 RST IN
GND 2
MAX6307 MAX6310 MAX6313
4 OVRST IN
RST IN1 3
MR 3
RST IN 3
SOT23-5
( ) ARE FOR MAX6311 ( ) ARE FOR MAX6312
SOT23-5
SOT23-5
( ) ARE FOR MAX6313
Package Information
For the latest package outline information, go to www.maxim-ic.com/packages. PACKAGE TYPE 5 SOT23 PACKAGE CODE U5-1 DOCUMENT NO. 21-0057
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5-Pin, Multiple-Input, Programmable Reset ICs
Revision History
REVISION NUMBER 0 1 2 3 4 5 REVISION DATE 9/96 8/98 4/99 11/05 12/07 4/08 Initial release Make corrections to EC table and Figures 1 and 8 Added Standard Versions Table and note to the Ordering Information table. Text added to the General Description Added lead-free option to the Ordering Information table. Updated Table 2 and Package Outline Added MAX6305E-MAX6313E to Ordering Information table, updated Electrical Characteristics table and global conditions, updated Table 1, and removed Table 2. DESCRIPTION PAGES CHANGED -- 3, 6, 8 1, 13 1, 13 9, 10, 14 1, 2, 3, 8-15
MAX6305-MAX6313
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
(c) 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

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