PHILIPS MAX6347-44D 3-pin ultra-low power sc70/sot microprocessor reset circuit Datasheet

INTEGRATED CIRCUITS
MAX6326/MAX6327/MAX6328/
MAX6346/MAX6347/MAX6348
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
Product data
Supersedes data of 2003 Apr 30
2003 Aug 05
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
DESCRIPTION
FEATURES
• Ultra-low 1 µA (max) supply current
• Precision monitoring of 2.5 V, 3 V, 3.3 V, and 5 V power supply
The MAX6326/MAX6327//MAX6328/MAX6346/MAX6347/MAX6348
microprocessor (µP) reset circuits monitor power supplies in µP and
digital systems. These devices eliminate external components and
adjustments while providing excellent circuit reliability and low cost
solution. They are used to monitor 2.5 V, 3 V, 3.3 V and 5 V power
supplies.
voltages
• Reset thresholds available from 2.2 V to 4.63 V
• Fully specified over temperature –40 °C to +85 °C
• 100 ms (min) power-on-reset delay time
• Power transient immunity
• Available in three versions: Push-Pull RESET, Push-Pull RESET,
They assert a reset signal when the VDD supply voltage falls below a
preset reset threshold voltage. The reset signal remains asserted for
at least 100 ms after the VDD rises above the reset threshold. The
reset threshold are factory trimmable from 2.2 V to 4.63 V in
approximately 100 mV increments. All these parts are guaranteed to
assert a reset for VDD down to 1 V. They have excellent immunity to
fast transients on VDD.
and Open-Drain RESET
• Pin compatible with MAX803/MAX809/MAX810
• Small, low cost, 3-pin SC70/SOT23 packages
The devices vary in their output configuration. The
MAX6326/MAX6346 have push-pull, active-LOW reset output; while
the MAX6328/MAX6348 have open drain, active-LOW reset output.
The MAX6327/MAX6347 have push-pull, active HIGH reset output.
APPLICATIONS
The lower threshold MAX6326/MAX6327/MAX6328 have ultra-low
supply current of typically 0.5 µA making them ideal for battery
powered applications. All six devices are available in both the 3-pin
SOT23 and SC70 packages.
• Computers and controllers
• Power monitoring
• Portable/battery powered equipment
• Industrial equipment
SIMPLIFIED SYSTEM DIAGRAM
VDD
VDD
VDD
RPU
RESET
RESET
MAX6328/
MAX6348
MOTOROLA
68HCXX
GND
GND
SL01835
Figure 1. MAX6328/6348 simplified system diagram.
2003 Aug 05
2
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
ORDERING INFORMATION
MAX632x
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
TEMPERATURE
RANGE
RESET
MAX6326-XXD
SOT23-3
Plastic small outline package; 3 leads; body width 1.5 mm
–40 °C to +85 °C
push-pull
Active-LOW
reset output
MAX6326-XXW
SC70-3
Plastic small outline package; 3 leads; body width 1.15 mm
–40 °C to +85 °C
push-pull
Active-LOW
reset output
MAX6327-XXD
SOT23-3
Plastic small outline package; 3 leads; body width 1.5 mm
–40 °C to +85 °C
push-pull
Active-HIGH
reset output
MAX6327-XXW
SC70-3
Plastic small outline package; 3 leads; body width 1.15 mm
–40 °C to +85 °C
push-pull
Active-HIGH
reset output
MAX6328-XXD
SOT23-3
Plastic small outline package; 3 leads; body width 1.5 mm
–40 °C to +85 °C
open-drain
Active-LOW
reset output
MAX6328-XXW
SC70-3
Plastic small outline package; 3 leads; body width 1.15 mm
–40 °C to +85 °C
open-drain
Active-LOW
reset output
NOTE:
The device has five standard voltage output options, indicated by the XX on the “Type Number”.
Additional voltage output options may be available (see Table 1).
XX (type number suffix)
Voltage (Typical)
22
2.2 V
23
2.3 V
26
2.6 V
29
2.9 V
31
3.1 V
MAX634x
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
TEMPERATURE
RANGE
RESET
MAX6346-XXD
SOT23-3
Plastic small outline package; 3 leads; body width 1.5 mm
–40 °C to +85 °C
push-pull
Active-LOW
reset output
MAX6346-XXW
SC70-3
Plastic small outline package; 3 leads; body width 1.15 mm
–40 °C to +85 °C
push-pull
Active-LOW
reset output
MAX6347-XXD
SOT23-3
Plastic small outline package; 3 leads; body width 1.5 mm
–40 °C to +85 °C
push-pull
Active-HIGH
reset output
MAX6347-XXW
SC70-3
Plastic small outline package; 3 leads; body width 1.15 mm
–40 °C to +85 °C
push-pull
Active-HIGH
reset output
MAX6348-XXD
SOT23-3
Plastic small outline package; 3 leads; body width 1.5 mm
–40 °C to +85 °C
open-drain
Active-LOW
reset output
MAX6348-XXW
SC70-3
Plastic small outline package; 3 leads; body width 1.15 mm
–40 °C to +85 °C
open-drain
Active-LOW
reset output
NOTE:
The device has two standard voltage output options, indicated by the XX on the “Type Number”.
Additional voltage output options may be available (see Table 1).
XX (type number suffix)
Voltage (Typical)
44
4.4 V
46
4.6 V
2003 Aug 05
3
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
PINNING
MAX6326/MAX6346, MAX6328/MAX6348 pin
description
GND
1
PIN
MAX632x/
MAX634x
RESET
or RESET
3
VDD
SYMBOL
1
GND
Device ground
2
RESET
Active-LOW Reset Output. RESET remains
LOW while VDD is below the reset threshold
and for a reset delay time of at least 100 ms
after VDD rises above the reset threshold.
MAX6328/MAX6348 have open-drain output
and the MAX6326/MAX6346 are Push-Pull
output.
3
VDD
Positive supply voltage
2
SL01839
Figure 2. Pin configuration.
DESCRIPTION
MAX6327/MAX6347 pin description
PIN
SYMBOL
DESCRIPTION
1
GND
Device ground
2
RESET
Active-HIGH Reset Output. RESET remains
high while VDD is below the reset threshold
and remains HIGH for at least 100 ms after
VDD rises above the reset threshold.
3
VDD
Positive supply voltage
MAXIMUM RATINGS
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VDD
Supply voltage
–0.3
6.0
V
Vi(RESET)
Input voltage at RESET pin
(MAX6326/MAX6346,
MAX6328/MAX6348)
–0.3
6.0
V
Ii(VDD)
Input current at VDD pin
–
20
mA
Io
Output current (RESET pin)
–
20
mA
P
Power dissipation
–
320
mW
–
174
Topr
Operating temperature
–40
+85
°C
Tstg
Storage temperature
–65
+150
°C
3-pin SOT23 (derate 4 mW/°C above Tamb = 70 °C)
3-pin SC70 (derate 2.7 mW/°C above Tamb = 70 °C)
2003 Aug 05
4
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
ELECTRICAL CHARACTERISTICS
VDD = full range (Tamb = –40 °C to +85 °C) unless otherwise noted; typical values are at Tamb = +25 °C, and VDD = 3 V (Note 1).
SYMBOL
PARAMETER
VDD range
IDD
Vth
Supply current
Reset threshold
(Table 1)
MAX
UNIT
Tamb = 0 °C to +70 °C
CONDITIONS
MIN
1.0
TYP
5.5
V
Tamb = –40 °C to +85 °C
1.2
5.5
V
MAX632x only, VDD = 3.0 V for Vth ≤ 2.93 V,
VDD = 3.2 V for Vth > 2.93 V, no load
–
0.5
1.0
µA
VDD = 5.5 V, no load
–
1.0
1.75
µA
Tamb = +25 °C
Vth – 1.5%
Vth
Vth + 1.5%
V
Tamb = –40 °C to +85 °C
Vth – 2.5%
Vth
Vth + 2.5%
V
–
40
–
ppm/°C
–
20
–
µs
100
185
280
ms
–
0.3
V
∆Vth/°C
Reset threshold temperature
coefficient
tRD
VCC to Reset release delay
tRP
Reset active timeout period
VOL(RESET)
RESET output voltage
(reset asserted)
ISINK = 1.6 mA, VDD > 2.1 V
–
0.4
V
VOH(RESET)
RESET output voltage
(reset released)
ISOURCE = 500 mA, VDD = 3.2 V, MAX6326 only
0.8 × VCC
–
V
ISOURCE = 800 µA, VDD = 4.5 V, Vth ≤ 4.38 V
0.8 × VCC
–
V
ISOURCE = 800 µA, VDD = Vth(MAX), Vth ≥ 4.5 V
0.8 × VCC
–
V
ISOURCE = 500 µA, VDD ≥ 2.1 V
0.8 × VCC
–
V
ISOURCE = 50 µA, VDD ≥ 1.2 V
0.8 × VCC
–
V
ISINK = 1.2 mA, VDD ≥ 3.2 V (MAX6327 only)
–
0.3
V
ISINK = 3.2 mA, VDD ≥ 3.2 V, Vth ≤ 4.38 V
–
0.4
V
ISINK = 3.2 mA, VDD = Vth(MAX), Vth ≥ 4.5 V
–
0.4
V
MAX6326/MAX6327/MAX6328
–
6.3
–
mV
MAX6346/MAX6347/MAX6348
–
9.5
–
mV
0.1
µA
VOH(RESET)
RESET output voltage
((reset asserted))
(MAX6327/MAX6347)
VOL(RESET)
RESET output voltage
(reset released)
(MAX6327/MAX6347)
Vhys
RESET threshold hysteresis
VDD = Vth to (Vth – 100 mV)
ISINK = 100 mA, VDD ≥ 1.2 V
Open-drain RESET output
leakage current
–
NOTE:
1. Over-temperature limits are guaranteed by design and are not production tested.
2003 Aug 05
5
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
Table 1. Factory-trimmed Reset Thresholds (Note 1)
PART
SUFFIX (XX)
RESET THRESHOLD VOLTAGE, Vth (V)
Tamb = +25 °C
Tamb = –40 °C to +85 °C
MIN
TYP
MAX
MIN
MAX
MAX632x-XX
22
2.167
2.200
2.233
2.145
2.250
MAX632x-XX
23
2.285
2.320
2.355
2.262
2.375
MAX632x-XX
24 (Note 2)
2.364
2.400
2.436
2.340
2.460
MAX632x-XX
25 (Note 2)
2.462
2.500
2.537
2.437
2.562
MAX632x-XX
26
2.591
2.630
2.669
2.564
2.696
MAX632x-XX
27 (Note 2)
2.660
2.700
2.741
2.633
2.768
MAX632x-XX
28 (Note 2)
2.758
2.800
2.842
2.730
2.870
MAX632x-XX
29
2.886
2.930
2.974
2.857
3.000
MAX632x-XX
30 (Note 2)
2.955
3.000
3.045
2.925
3.075
MAX632x-XX
31
3.034
3.080
3.126
3.003
3.150
MAX634x-XX
33 (Note 2)
3.250
3.300
3.350
3.217
3.383
MAX634x-XX
34 (Note 2)
3.349
3.400
3.451
3.315
3.485
MAX634x-XX
35 (Note 2)
3.447
3.500
3.552
3.412
3.587
MAX634x-XX
36 (Note 2)
3.546
3.600
3.654
3.510
3.690
MAX634x-XX
37 (Note 2)
3.644
3.700
3.755
3.607
3.792
MAX634x-XX
38 (Note 2)
3.743
3.800
3.857
3.705
3.895
MAX634x-XX
39 (Note 2)
3.841
3.900
3.958
3.802
3.997
MAX634x-XX
40 (Note 2)
3.940
4.000
4.060
3.900
4.100
MAX634x-XX
41 (Note 2)
4.038
4.100
4.161
3.997
4.202
MAX634x-XX
42 (Note 2)
4.137
4.200
4.263
4.095
4.305
MAX634x-XX
43 (Note 2)
4.235
4.300
4.364
4.192
4.407
MAX634x-XX
44
4.314
4.380
4.446
4.270
4.489
MAX634x-XX
45 (Note 2)
4.432
4.500
4.567
4.387
4.612
MAX634x-XX
46
4.560
4.630
4.699
4.514
4.746
NOTES:
1. Factory-trimmed reset thresholds are available in 100 mV increments with ±1.5% tolerance at room temperature.
2. Consult factory for availability.
2003 Aug 05
6
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
TYPICAL PERFORMANCE CURVES
MAX6326
45
OUTPUT SOURCE CURRENT, I SOURCE (mA)
OUTPUT SINK CURRENT, I SINK (mA)
12
10
8
VDD = 1.2 V
6
4
2
0
0
0.2
0.4
0.6
0.8
40
35
30
VDD = 1.2 V
25
20
15
10
5
0
1.0
0
RESET OUTPUT VOLTAGE LOW, VOL(RESET) (V)
1
2
3
SL01831
SL01833
Figure 3. Output sink current vs. RESET output voltage low.
Figure 5. Output sink current vs. RESET output voltage high.
70
OUTPUT SOURCE CURRENT, I SOURCE (mA)
50
OUTPUT SINK CURRENT, I SINK (mA)
4
RESET OUTPUT VOLTAGE HIGH, VOH (RESET) (V)
45
40
35
30
VDD = 2.1 V
25
20
15
10
5
0
0
0.5
1.0
1.5
2.0
2.5
50
VDD = 2.1 V
40
30
20
10
0
0
RESET OUTPUT VOLTAGE LOW, VOL(RESET) (V)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
RESET OUTPUT VOLTAGE HIGH, VOH (RESET) (V)
SL01832
SL01834
Figure 4. Output sink current vs. RESET output voltage low.
2003 Aug 05
60
Figure 6. Output sink current vs. RESET output voltage high.
7
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
APPLICATION INFORMATION
Interfacing to µPs with Bidirectional Reset Pins
System configurations with various µPs
The MAX6328/MAX6348 RESET output is open drain and are easily
interfaced with microprocessors which have bidirectional reset pins,
such as the Motorola 68HC11. Directly connecting the
MAX6328/MAX6348 RESET output to the µPs reset input and
providing a pull-up resistor to VDD allows either device to
independently assert reset (Figure 7).
The MAX326-MAX6348 Series resets provide a system solution for
various µPs. Figures 9 and 10, respectively, reference the Philips
µPs which are compatible with the MAX6326/MAX6346 and
MAX6327/MAX6347 system resets.
VDD
VDD
VDD
VDD
VDD
VDD
RPU
RESET
RESET
RESET
RESET
MAX6328/
MAX6348
MOTOROLA
68HCXX
GND
GND
µP(Note 1)
MAX6326/
MAX6346
GND
GND
SL01837
SL01835
NOTE:
1. Philips microprocessors with active-LOW resets: All 16-bit
devices from XA-family (XA-Cxx, XA-Gxx, XA-Sxx, XA-Hxx), all
LPC7xx devices (P87LPC760/761/762/767/768/769,
P80C591/P87C591 (with on-chip CAN controller).
Figure 9. µP System Diagram using MAX6326/MAX6328
Push-Pull, Active-LOW Resets
Figure 7. Interfacing to µPs with Bidirectional Reset Pins
Negative-going VDD transients
The MAX6326-MAX6348 Series resets are relatively immune to
short duration, negative-going VDD transients or power glitches. This
capability greatly reduces false resets with short-duration pulses.
VDD
Figure 8, Maximum Transient Duration versus Reset Comparator
Overdrive, shows the maximum transient condition for which reset
signal are not generated. The graph shows the maximum pulse
width that a negative-going transient may have before it will
generate a reset signal. Note: as the amplitude of the transient
increases, the maximum allowable transient pulse width decreases.
VDD
VDD
RESET
MAXIMUM TRANSIENT DURATION (µ s)
450
MAX6327/
MAX6347
400
RESET
µP(Note 1)
350
300
GND
GND
250
200
MAX6346/MAX6347/
MAX6348
150
SL01838
NOTE:
1. Philips microprocessors with active-HIGH resets : 8xC5x, 8xC3x,
8xC5xX2, 8xC3xX2, 8xC51Fx, 8xC51Rx+, 89C51Rx2, 89C66x,
8xC554, 8xC552, etc.
Figure 10. µP System Diagram using MAX6327/MAX6347
Push-Pull, Active-HIGH Resets
100
MAX6326/MAX6327/
MAX6328
50
0
1
10
100
1000
RESET COMPARATOR OVERDRIVE, Vth – VCC (mV)
SL01836
Figure 8. Maximum transient duration without causing a
reset pulse versus reset comparator overdrive.
2003 Aug 05
8
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
PACKING METHOD
GUARD
BAND
TAPE
REEL
ASSEMBLY
TAPE DETAIL
COVER TAPE
CARRIER TAPE
BARCODE
LABEL
BOX
SL01305
Figure 11. Tape and reel packing method.
2003 Aug 05
9
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
SOT23-3: plastic small outline package; 3 leads; body width 1.5 mm
3
1
1.35
2003 Aug 05
0.15
0.05
2
1.2
1.0
0.025
0.55
0.41
0.22
0.08
3.00
2.70
1.70
1.50
0.55
0.35
10
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
SC70-3: plastic small outline package; 3 leads; body width 1.15 mm
1.0
0.8
2003 Aug 05
0.4
0.25
0.225
0.10
2.1
1.9
0.4
0.1
11
Philips Semiconductors
Product data
3-pin ultra-low power SC70/SOT
microprocessor reset circuit
MAX632x/MAX634x
REVISION HISTORY
Rev
Date
Description
_2
20030805
Product data (9397 750 11124). ECN 853-2423 30165 dated 30 July 2003.
Supersedes data of 30 Arpil 2003 (9397 750 10686).
Modifications:
• Table 1 on page 6, last row of table (suffix 46): Vth at Tamb = –40 to +85 °C: change from 4.3514 to 4.514 V.
_1
20030430
Product data (9397 750 10686). ECN 853-2423 29823 of 15 April 2003.
Data sheet status
Level
Data sheet status [1]
Product
status [2] [3]
Definitions
I
Objective data
Development
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
II
Preliminary data
Qualification
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III
Product data
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be
expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys
no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent,
copyright, or mask work right infringement, unless otherwise specified.
 Koninklijke Philips Electronics N.V. 2003
All rights reserved. Printed in U.S.A.
Contact information
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
Date of release: 08-03
For sales offices addresses send e-mail to:
[email protected]
2003 Aug 05
Document order number:
12
9397 750 11124
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