MAX983 Maxim, MAX983 Datasheet

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MAX983

Manufacturer Part Number
MAX983
Description
The MAX971–MAX974 and MAX981–MAX984 single/dual/quad low-voltage comparators feature the lowest power consumption available
Manufacturer
Maxim
Datasheet

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0
The MAX971–MAX974 and MAX981–MAX984 single/
dual/quad low-voltage comparators feature the lowest
power consumption available. These micropower
devices draw less than 4µA supply current over
temperature (MAX971/MAX972/MAX981/MAX982), and
include an internal 1.182V ±1% (MAX971/MAX973/
MAX974) or ±2% (MAX981–MAX984) voltage reference
and programmable hysteresis.
Ideal for 3V or 5V single-supply applications, these
devices operate from a single 2.5V to 11V supply (or
±1.25V to ±5.5V dual supplies), and each comparator’s
input voltage ranges from the negative supply rail to within
1.3V of the positive supply.
The single MAX971/MAX981 and the dual MAX973/
MAX982/MAX983 provide a unique, simple method for
adding hysteresis without feedback or complicated
equations, simply by using the HYST pin plus two
resistors.
The MAX971–MAX974 and MAX981–MAX984’s open-
drain outputs permit wire-ORed configurations. Thanks to
an 11V output range and separate GND pin for the output
transistor (MAX971/MAX974, MAX981/MAX984), these
devices are ideal for level translators and bipolar to single-
ended converters. For similar devices with complementary
output stages, see the MAX921–MAX924 (1% reference)
and the MAX931–MAX934 (2% reference).
19-0450; Rev 3; 2/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX971
MAX972
MAX973
MAX974
MAX981
MAX982
MAX983
MAX984
None
1%
1%
1%
2%
2%
2%
2%
________________________________________________________________________________________ 1
General Description
1
2
2
4
1
2
2
4
Yes
Yes
Yes
Yes
Yes
No
No
No
Single/Dual-Supply Comparators
8-Pin
DIP/SO/µMAX
8-Pin UCSP/
DIP/SO/µMAX
8-Pin
DIP/SO/µMAX
16-Pin DIP/SO
8-Pin
DIP/SO/µMAX
8-Pin
DIP/SO/µMAX
8-Pin
DIP/SO/µMAX
16-Pin DIP/SO
Ultra-Low-Power, Open-Drain,
o Available in Ultra-Small Packages:
o Ultra-Low Quiescent Current (4µA, max)
o Power Supplies:
o Input Voltage Range Includes Negative Supply
o Internal Bandgap Reference
o 12µs Propagation Delay (10mV Overdrive)
o Output Has Separate GND Pin (MAX9_1/MAX9_4)
Ordering Information continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX971CPA
MAX971CSA
MAX971CUA
Battery-Powered
Systems
Threshold Detectors
Over Extended Temp Range (MAX971/MAX981)
UCSP™ (MAX972)
µMAX (MAX9_1/MAX9_2/MAX9_3)
Single 2.5V to 11V
Dual ±1.25V to ±5.5V
1.182V ±1% (MAX97_)
1.182V ±2% (MAX98_)
PART
V
IN
Typical Operating Circuit
THRESHOLD DETECTOR
3
4
5
6
TEMP RANGE
IN-
HYST
REF
0 C to +70 C
0 C to +70 C
0 C to +70 C
IN+
Ordering Information
V-
7
V+
2
MAX971
MAX981
Window Comparators
Level Translators
Oscillator Circuits
GND
1
Applications
OUT
PIN-PACKAGE
8 Plastic Dip
8 SO
8 µMAX
Features
8

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MAX983 Summary of contents

Page 1

... The single MAX971/MAX981 and the dual MAX973/ MAX982/MAX983 provide a unique, simple method for adding hysteresis without feedback or complicated equations, simply by using the HYST pin plus two resistors. ...

Page 2

... UCSP (derate 4.7mW/°C above +70°C) ........379mW 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— ...

Page 3

ELECTRICAL CHARACTERISTICS—5V OPERATION (continued) ( GND = 0V MIN A PARAMETER MAX9_2/MAX9_3, I Output Low Voltage MAX9_1/MAX9_4, I Output Leakage Current V REFERENCE (MAX9_1/MAX982/MAX9_3/MAX9_4 ONLY) MAX971/MAX973/ MAX974 Reference Voltage MAX981–MAX984 T ...

Page 4

Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators ELECTRICAL CHARACTERISTICS—3V OPERATION (continued) ( GND = 0V MIN PARAMETER Response Time (High-to-Low T A Transition) 1M pullup to V+ Response Time (Low-to-High T A Transition) ...

Page 5

Operating Characteristics ( GND = 0V +25°C, unless otherwise noted.) A OUTPUT VOLTAGE LOW vs. LOAD CURRENT 2 2 1.5 1.0 0 ...

Page 6

Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators ( GND = 0V +25°C, unless otherwise noted.) A MAX9_1/MAX972/MAX9_4 TRANSFER FUNCTION 5.0 +5V 4.5 10k 100k 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 ...

Page 7

... B3 — — — _______________________________________________________________________________________ Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators MAX973/ MAX983 NAME DIP/SO/ µMAX Ground. Connect to V- for single-supply operation. — GND Negative Supply. Connect to GND for single-supply 2 V- operation (MAX9_1). — IN+ Noninverting Comparator Input — IN- Inverting Comparator Input Hysteresis Input ...

Page 8

Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators PIN NAME MAX974 MAX984 1 OUTB 2 OUTA INA- 5 INA+ 6 INB- 7 INB+ 8 REF INC- 11 INC+ 12 IND- 13 IND+ 14 GND 15 OUTD 16 OUTC ...

Page 9

... V- to (V+ - 1.3V). The inputs can be taken above and below the supply rails 300mV without damage. OUTB 8 (A3 (A2) INB+ 6 (C3) INB- 5 (B3) Figure 1c. MAX973/MAX983 Functional Diagram (Window Comparator) OUTB REF 6 HYST 5 Figure 1d. MAX974/MAX984 Functional Diagram ...

Page 10

... The Typical Operating Characteristics show the propagation delay for various overdrive levels. The open-drain outputs are intended for wire-ORed and level-shifting applications. The maximum output voltage is 11V above V-, and may be applied even when no supply voltage is present (V+ = V-). The MAX9_1 and MAX9_4 outputs sink current to GND, making these devices ideal for bipolar to single-ended conversion and level-shifting applications ...

Page 11

... HB twice the voltage between REF and HYST. The HYST input can be adjusted to a maximum voltage of REF and to a minimum voltage of (REF - 50mV). The maximum difference between REF and HYST (50mV) will therefore produce a 100mV (max) hysteresis band. ...

Page 12

Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators 2) Select R1. The leakage current into INB- is normally under 1nA, so the current through R1 should exceed 100nA for the thresholds to be accurate. R1 values up to about 10M can be used, but ...

Page 13

... WALL ADAPTER 9V DC STEP-DOWN REGULATOR Q1 1M BATTERY (4 CELLS) MAX973 MAX983 953k 4 INB- 470k 1 OUTA 110k 3 INA+ R2 47k Figure 6. Battery Switchover Circuit UCSP Applications Information For the latest application details on UCSP contruction, dimensions, tape carrier information, printed circuit board techniques, bump-pad ...

Page 14

... V+ MAX972 INA INB+ INA INB- DIP/SO/ MAX OUTA 1 8 OUTB MAX973 INA REF MAX983 INB HYST DIP/SO/ MAX Pin Configurations OUTA 1 8 OUTB MAX982 INA REF INB HYST DIP/SO/ MAX ...

Page 15

... MAX982CUA 8 Plastic Dip MAX982EPA Plastic Dip MAX982ESA MAX983CPA µMAX MAX983CSA MAX983CUA 8 Plastic Dip 8 SO MAX983EPA MAX983ESA 16 Plastic Dip MAX984CPE 16 Narrow SO MAX984CSE 16 Plastic Dip MAX984EPE 16 Narrow SO 8 Plastic Dip MAX984ESE ___________________Chip Information MAX971/MAX972/MAX973/MAX981/MAX982/MAX984 TRANSISTOR COUNT: 164 MAX974/MAX984 TRANSISTOR COUNT: 267 ...

Page 16

... Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 16 ______________________________________________________________________________________ Package Information ...

Page 17

... For the latest package outline information www.maxim-ic.com/packages.) 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. ...

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