MAX6311EUK00D-T [MAXIM]
5-Pin, Multiple-Input, Programmable Reset ICs;
| 型号： | MAX6311EUK00D-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 5-Pin, Multiple-Input, Programmable Reset ICs |
| 文件： | 总11页 (文件大小：104K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1145; Rev 6; 7/12
5-Pin, Multiple-Input,
Programmable Reset ICs
05–MAX613
General Description
Features
o Small 5-Pin SOT23 Package
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.
o Precision Factory-Set V
Reset Thresholds;
Available in 0.1V Increments from 2.5V to 5V
o Immune to Short V Transients
CC
CC
o Guaranteed RESET Valid to V
o Guaranteed Over Temperature
o 8µA Supply Current
= 1V
CC
o Factory-Set Reset Timeout Delay from
1ms (min) to 1120ms (min)
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 avail-
able. Contact the factory for availability of non standard
versions.
o No External Components
o Manual Reset Input
o Under/Overvoltage Supply Monitoring
Ordering Information
PIN-
†
PART
TEMP RANGE
Applications
PACKAGE
Portable Computers
MAX6305UK00D_-T
MAX6305EUK00D_-T
-0°C to +70°C
-40°C to +85°C
5 SOT23
5 SOT23
Computers
† The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/
Controllers
MAX6313 are available with factory-set V reset thresholds from
CC
Intelligent Instruments
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-
and-reel only.
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.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
_______________________________________________________________Selector Table
FACTORY-
SET RESET
THRESHOLD
OPEN-DRAIN
RESET
OUTPUT
PUSH/PULL
RESET
OUTPUT
PUSH/PULL
RESET
OUTPUT
ADDITIONAL
UNDERVOLTAGE OVERVOLTAGE
RESET INPUTS
NEGATIVE/
MANUAL-
RESET
INPUT
PART
RESET INPUT
ON V
—
ꢀ
CC
MAX6305
MAX6306
MAX6307
MAX6308
MAX6309
MAX6310
MAX6311
MAX6312
MAX6313
—
—
—
ꢀ
—
—
—
—
—
—
ꢀ
2
1
1
2
1
1
2
1
1
—
—
ꢀ
—
ꢀ
ꢀ
ꢀ
—
—
ꢀ
ꢀ
ꢀ
—
—
—
—
—
—
—
ꢀ
—
—
ꢀ
ꢀ
—
—
ꢀ
ꢀ
ꢀ
—
—
—
—
ꢀ
—
—
ꢀ
ꢀ
—
ꢀ
ꢀ
1
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
ABSOLUTE MAXIMUM RATINGS
CC
V
...........................................................................-0.3V to +6V
Operating Temperature Range
All Other Pins..............................................-0.3V to (V
+ 0.3V)
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
Soldering Temperature (reflow)
CC
Input/Output Current, All Pins .............................................20mA
Rate of Rise, V ............................................................100V/µs
CC
Continuous Power Dissipation (T = +70°C)
A
SOT23 (derate 7.1mW/°C above +70°C)....................571mW
Lead (Pb) - free packages............................................+260°C
Packages containing lead (Pb).....................................+240°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
V
CC
= +2.5V to +5.5V for the MAX6305/MAX6308/MAX6311, V = (V + 2.5%) to +5.5V for the MAX6306/MAX6307/MAX6309/
CC
TH
MAX6310/MAX6312/MAX6313; T = -40°C to +85°C; unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
A
A
PARAMETER
Range
SYMBOL
CONDITIONS
= -40°C to +85°C (Note 2)
A
MIN
1.0
TYP
MAX
5.5
UNITS
V
V
T
CC
05–MAX613
Supply Current
I
V
= 5.5V
CC
8
16
µA
CC
V
1.5%
-
V
1.5%
+
TH
TH
T
T
= +25°C
V
V
A
TH
TH
MAX6306/MAX6307/
MAX6309/MAX6310/
MAX6312/MAX6313
V
2.5%
-
V
2.5%
+
TH
TH
= 0°C to +70°C
A
Reset Threshold
(Note 3)
V
V
TH
MAX6306E/MAX6307/
MAX6309E/MAX6310E/
MAX6312E/MAX6313E
V
2.5%
-
V
2.5%
+
TH
TH
T
= -40°C to +85°C
V
A
TH
Reset Threshold
Reset Threshold
V
/°C
40
2 x V
ppm/°C
mV
TH
V
HYST
TH
TH
D1
D2
D3
D4
1.0
20
1.4
28
2.0
40
Reset Timeout Period
t
ms
V
RP
140
1120
200
1570
280
2240
0.4
V
> 4.25V, I
= 3.2mA
CC
CC
CC
CC
SINK
V
V
V
> 2.5V, I
> 1.2V, I
> 1.0V, I
= 1.2mA
= 500µA
= 50µA
0.3
SINK
SINK
SINK
V
MAX6305–MAX6310
OL
0.3
0.3
RESET Output Voltage
V
> 4.25V,
CC
V
- 1.5
CC
I
= 800µA
SOURCE
MAX6308/MAX6309/
MAX6310
V
V
OH
V
> 2.5V,
CC
0.8 x V
CC
I
= 500µA
SOURCE
V
V
> 4.25V, I
= 3.2mA
0.4
0.3
CC
CC
SINK
V
OL
> 2.5V, I
= 1.2mA
SINK
MAX6311/MAX6312/
MAX6313
V
> 1.8V,
CC
RESET Output Voltage
0.8 x V
0.8 x V
V
CC
CC
I
= 150µA
SOURCE
V
OH
V
> 1.0V,
CC
I
= 10µA
SOURCE
2
5-Pin, Multiple-Input,
Programmable Reset ICs
05–MAX613
ELECTRICAL CHARACTERISTICS (continued)
V
CC
= +2.5V to +5.5V for the MAX6305/MAX6308/MAX6311, V = (V + 2.5%) to +5.5V for the MAX6306/MAX6307/MAX6309/
CC
TH
MAX6310/MAX6312/MAX6313; T = -40°C to +85°C; unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MANUAL-RESET INPUT (MAX6306/MAX6309/MAX6312)
V
0.8
IL
V
> 4.0V
TH
V
2.4
IH
MR Input
V
V
0.3 x V
CC
IL
V
< 4.0V
TH
V
0.7 x V
1
IH
CC
T
T
= 0°C to +70°C
A
MR Minimum Input
Pulse Width
µs
= -40°C to +85°C
1.5
A
MR Glitch Rejection
MR to Reset Delay
MR Pullup Resistance
0.1
500
63.5
µs
nsV
kΩ
32
100
ADJUSTABLE RESET COMPARATOR INPUTS
T
= +25°C
1.21
1.20
1.20
1.23
1.25
1.26
1.26
A
RST IN_/OVRST_IN
Input Threshold
V
V
MAX6305–MAX6313, T = 0°C to +70°C
RSTH
A
MAX6305E–MAX6313E, T = -40°C to +85°C
A
RST IN_/OVRST_IN
Input Current
I
0V < V
< V - 0.3V (Note 4)
CC
-25
+25
nA
RST IN_
RST IN
RST IN_/OVRST_IN
Hysteresis
2.5
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 < V
< 2.5V.
CC
Note 3: The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313 monitor V
through an internal factory-trimmed voltage
CC
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
5-Pin, Multiple-Input,
Programmable Reset ICs
__________________________________________Typical Operating Characteristics
(V
= +5V, T = +25°C, unless otherwise noted.)
A
CC
OVRST IN RISING PROPAGATION
DELAY vs. TEMPERATURE
(OVERVOLTAGE RESET INPUT)
SUPPLY CURRENT
vs. TEMPERATURE
V
CC
FALLING PROPAGATION DELAY
vs. TEMPERATURE
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
70
60
50
40
30
20
10
0
80
70
60
50
V
= 5.5V
CC
1mV
µs
1mV
µs
V
= 4.5V
CC
40
30
20
10
V
= 3.5V
CC
10mV
µs
10mV
µs
V
= 2.5V
CC
0
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
05–MAX613
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
RST IN_ FALLING PROPAGATION
DELAY vs. TEMPERATURE
RESET TIMEOUT
vs. TEMPERATURE
RESET THRESHOLD
vs. TEMPERATURE
120
100
80
60
40
20
0
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
1.010
1.008
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
1mV
µs
10mV
µs
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
MAXIMUM TRANSIENT DURATION vs.
MAXIMUM TRANSIENT DURATION vs.
OVRST IN THRESHOLD OVERDRIVE
MAXIMUM TRANSIENT DURATION vs.
RST IN_ THRESHOLD OVERDRIVE
V
RESET THRESHOLD OVERDRIVE
CC
10,000
1000
100
10
10,000
1000
100
10
10,000
1000
100
10
RESET OCCURS ABOVE LINES
RESET OCCURS ABOVE LINES
RESET OCCURS ABOVE LINES
V
= 5.0V
TH
V
= 5.0V
V
= 5.0V
TH
TH
V
= 3.0V
TH
V
= 2.5V
TH
V
= 3.0V
TH
1
1
1
0
400
800
1200
0
400
OVERDRIVE, V
800
1200
0
400
OVERDRIVE, V - V
800
1200
OVERDRIVE, V - V (mV)
- V (mV)
REF
(mV)
TH
CC
OVRST IN
REF
RST IN
4
5-Pin, Multiple-Input,
Programmable Reset ICs
05–MAX613
______________________________________________________________Pin Description
PIN
MAX6305
MAX6308
MAX6311
MAX6306
MAX6309
MAX6312
MAX6307
MAX6310
MAX6313
NAME
FUNCTION
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
1
1
1
RESET
GND
Active-High, Push/Pull Reset Output for the MAX6311/MAX6312/MAX6313
System Ground
2
2
3
2
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
—
—
MR
goes high. Leave unconnected or connect to V
if unused.
CC
Undervoltage Reset Comparator Input. Asserts reset when the
monitored voltage falls below the programmed threshold. Set the
RST IN1,
RST IN2
3, 4
—
—
4
—
3
reset threshold with an external resistor divider. Connect to V
unused.
if
CC
RST IN
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.
—
5
—
5
4
5
OVRST IN
System Supply. The MAX6306/MAX6307/MAX6309/MAX6310/
V
CC
MAX6312/MAX6313 also monitor V
through an internal factory-
CC
trimmed resistor divider to the reset comparator.
Reset Outputs
_______________Detailed Description
A µP’s reset input starts the µP in a known state. These
µP supervisory circuits assert reset to prevent code-
execution errors during power-up, power-down, or
brownout conditions.
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 mon-
RESET (MAX6305–MAX6310) and RESET (MAX6311/
MAX6312/MAX6313) are guaranteed to be asserted at
a valid logic level for V
> 1V (see Electrical
CC
Characteristics). Once all monitored voltages exceed
their programmed reset thresholds, an internal timer
itor V
through an internal, factory-trimmed voltage
CC
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
keeps reset asserted for the reset timeout period (t );
RP
after this interval, reset deasserts.
If a brownout condition occurs (any or all monitored volt-
ages 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 moni-
tored voltages return above their reset thresholds, and
reset remains asserted for a reset timeout period. The
MAX6305/MAX6306/MAX6307 feature an active-low,
to the factory-trimmed reset threshold on the V
moni-
CC
tor. Program the adjustable reset inputs with an external
resistor divider (see Adjustable Reset Inputs section).
5
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 com-
plementary reset output.
V
CC
*
The MAX6305/MAX6308/MAX6311 switch from under-
voltage lockout operation to normal operation between
1.5V < V
< 2.5V. Below 1.5V, V
undervoltage-
CC
CC
lockout mode asserts RESET. Above 2.5V, V
normal-
CC
+1.23V
operation mode asserts reset if RST IN_ falls below the
RST IN_ threshold.
Manual-Reset Input
(MAX6306/MAX6309/MAX6312)
RST IN1
RESET
GENERATOR
RESET**
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
RESET***
†
+1.23V
+1.23V
period (t ) after MR returns high. This input has an inter-
RP
05–MAX613
nal 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 sys-
tems, with CMOS-logic levels in 3V systems, or with open-
drain/collector output devices. Connect a normally open
momentary switch from MR to GND to create a manual-
reset 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.
RST IN2
OVRST IN
+1.23V
MAX6305–MAX6313
††
V
CC
†††
The MR pin has internal ESD-protection circuitry that may
be forward biased under certain conditions, drawing
excessive current. For example, assume the circuitry driv-
MR
ing MR uses a +5V supply other than V . If V drops or
CC
CC
browns out lower than +4.7V, MR’s absolute maximum rat-
ing is violated (-0.3V to (V + 0.3V)), and undesirable
CC
GND
current flows through the ESD structure from MR to V
.
CC
To avoid this, it is recommended that the supply for the MR
pin be the same as the supply monitored by V . In this
*
**
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
CC
***
†
way, the voltage at MR will not exceed V
.
CC
††
†††
Adjustable Reset Inputs
The MAX6305–MAX6313 each have one or more reset
inputs (RST IN_ /OVRST IN). These inputs are com-
pared to the internal reference voltage (Figure 1).
Connect a resistor voltage divider to RST IN_ such that
Figure 1. Functional Diagram
V
falls below V
IN
(1.23V) when the monitored
RST IN_
RSTH
voltage (V ) falls below the desired reset threshold
TH
(V ) (Figure 2). Calculate the desired reset voltage
with the following formula:
R1 + R2
________
V
TH
=
x V
RSTH
R2
6
5-Pin, Multiple-Input,
Programmable Reset ICs
05–MAX613
V
IN
V
CC
V
V
CC
CC
R1
R2
MAX6305–
MAX6313
RST IN_
MAX6305
MAX6306
MAX6307
RESET
RESET
µP
R1 + R2
R2
V
=
=
V
RSTH
TH
(
)
RESET
GENERATOR
C*
1
R1 + R2
GND
*ƒ
C
(
)
2π R1 x R2 x C
GND
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 cur-
rent. The error term in the calculated threshold is simply:
Negative-Going V
CC
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
V
transients (glitches).
CC
25nA x R1
The Typical Operating Characteristics show the
Maximum Transient Duration vs. V Reset Threshold
If you choose R1 to be 1MΩ, the resulting error is
6
-9
CC
25 x 10 x 1 x 10 = 25mV.
Overdrive, for which reset pulses are not generated.
The graph was produced using negative-going pulses,
Like the V voltage monitors on the MAX6306/MAX6307/
CC
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:
starting at V
max, and ending below the pro-
TH
grammed reset threshold by the magnitude indicated
(reset threshold overdrive). The graph shows the maxi-
mum pulse width that a negative-going V
transient
CC
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.
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.
RST IN_/OVRST IN are also immune to negative/positive-
going transients (see Typical Operating Characteristics).
A 0.1µF bypass capacitor mounted close to the RST IN_,
OVRST IN, and/or the V
sient immunity.
pin provides additional tran-
CC
__________Applications Information
Ensuring a Valid RESET/RESET
Output Down to V = 0V
Interfacing to µPs with
Bidirectional Reset Pins
CC
falls below 1V, push/pull structured RESET/
When V
CC
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).
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 applica-
tions, since most µPs and other circuitry do not operate
with V
below 1V. In those applications where RESET
CC
must be valid down to 0V, adding a pull-down resistor
between RESET and ground sinks any stray leakage
7
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
Table 1. Factory-Trimmed Reset
Thresholds*
T
A
= +25°C
T = -40°C to +85°C
A
SUFFIX
V
, a 100kΩ pull-up resistor between RESET and V
CC
MIN
TYP
MAX
MIN
MAX
CC
will hold RESET high when V falls below 1V (Figure 5).
CC
Preprogrammed
Threshold Not
Available
Preprogrammed Threshold
Not Available
Since the MAX6305/MAX6306/MAX6307 have open-
drain, active-low outputs, they typically use a pull-up
resistor. With these devices and under these conditions
00
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
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
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
(V
< 1V), RESET will most likely not maintain an
CC
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
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.
V
CC
05–MAX613
MAX6308
MAX6309
MAX6310
V
CC
GND
RESET
100k
Figure 4. Ensuring RESET Valid to V
= 0V
CC
V
CC
MAX6311
MAX6312
MAX6313
100k
V
CC
GND
RESET
* Factory-trimmed reset thresholds are available in approximately
100mV increments with a 1.5% room-temperature variance.
Figure 5. Ensuring RESET Valid to V
= 0V
CC
8
5-Pin, Multiple-Input,
Programmable Reset ICs
05–MAX613
Ordering Information (continued)
Typical Operating Circuit
PIN-
†
PART
TEMP RANGE
PACKAGE
3.3V
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
-0°C to +70°C
-40°C to +85°C
-0°C to +70°C
-40°C to +85°C
-0°C to +70°C
-40°C to +85°C
-0°C to +70°C
-40°C to +85°C
-0°C to +70°C
-40°C to +85°C
-0°C to +70°C
-40°C to +85°C
-0°C to +70°C
-40°C to +85°C
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
3.3V
V
CC
RESET
RESET IN
5V
MAX6309
µP
RST IN
MR
GND
† The MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/
MAX6313 are available with factory-set V reset thresholds from
CC
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 avail-
ability of non-standard versions. All devices available in tape-and-
reel only.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Standard Versions Table
MAX6305UK00D3-T
MAX6306UK29D3-T
MAX6306UK46D3-T
MAX6307UK46D3-T
MAX6308UK00D3-T
MAX6309UK29D3-T
MAX6309UK46D3-T
MAX6311UK00D3-T
MAX6312UK29D3-T
MAX6312UK46D3-T
9
5-Pin, Multiple-Input,
Programmable Reset ICs
Pin Configurations
TOP VIEW
1
2
3
5
4
1
2
3
5
4
1
2
3
5
4
V
V
V
CC
(RESET) RESET
GND
(RESET) RESET
(RESET) RESET
GND
CC
CC
MAX6305
MAX6308
MAX6311
MAX6306
MAX6309
MAX6312
MAX6307
MAX6310
MAX6313
GND
MR
RST IN1
RST IN2
RST IN
RST IN
OVRST IN
SOT23-5
SOT23-5
SOT23-5
( ) ARE FOR MAX6311
( ) ARE FOR MAX6312
( ) ARE FOR MAX6313
05–MAX613
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.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.
LAND
PATTERN NO.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE NO.
21-0057
90-0174
5 SOT23
U5+1
10
5-Pin, Multiple-Input,
Programmable Reset ICs
05–MAX613
Revision History
REVISION REVISION
PAGES
DESCRIPTION
NUMBER
DATE
CHANGED
0
9/96
Initial release
—
1
8/98
Make corrections to EC table and Figures 1 and 8.
3, 6, 8
Added Standard Versions Table and note to the Ordering Information table. Text
added to the General Description.
2
4/99
1, 13
3
4
11/05
12/07
Added lead-free option to the Ordering Information table.
1, 13
Updated Table 2 and Package Outline.
9, 10, 14
Added MAX6305E–MAX6313E to Ordering Information table, updated Electrical
Characteristics table and global conditions, updated Table 1, and removed Table 2.
5
6
4/08
7/12
1, 2, 3, 8–15
2
Updated the Electrical Characteristics table.
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. 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 Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 ________________ 11
© 2012 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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