MAX934 Fast Delivery |IC PHOENIX CO.,LIMITED

MAX934 ,Ultra-Low-Power, Low-Cost Comparators with 2% ReferenceELECTRICAL CHARACTERISTICS—5V Operation(V+ = 5V, V- = GND = 0V, T = T to T , unless otherwise noted ..
MAX934CPE ,Ultra Low-Power, Low-Cost Comparators with 2eferenceELECTRICAL CHARACTERISTICS—5V Operation(V+ = 5V, V- = GND = 0V, T = T to T , unless otherwise noted ..
MAX934CPE+ ,Ultra-Low-Power, Low-Cost Comparators with 2% ReferenceApplications5 HYSTBattery-Powered SystemsThreshold Detectors6 REFMAX931Window ComparatorsV- GND2 1O ..
MAX934CSE ,Ultra Low-Power, Low-Cost Comparators with 2eferenceELECTRICAL CHARACTERISTICS—5V Operation(V+ = 5V, V- = GND = 0V, T = T to T , unless otherwise noted ..
MAX934CSE ,Ultra Low-Power, Low-Cost Comparators with 2eferenceFeaturesThe MAX931-MAX934 single, dual, and quad micropower, ' Ultra-Low 4µA Max Quiescent Currentl ..
MAX934CSE ,Ultra Low-Power, Low-Cost Comparators with 2eferenceApplications5 HYSTBattery-Powered SystemsThreshold Detectors6 REFMAX931Window ComparatorsV- GND21Os ..
MB8868A ,MOS Universal Asynchronous Receiver / Transmitter (UART)Features I Full or Hall Duplex Operation I Completely Programmable I Start Bit Generated ..
MB89121 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12509-6EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89120/1 ..
MB89123A ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12509-6EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89120/1 ..
MB89133A ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12510-9EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89130/1 ..
MB89153 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12506-4EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89150/1 ..
MB89163 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12405-2EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89160/1 ..

MAX934
Ultra-Low-Power, Low-Cost Comparators with 2% Reference
_______________General Description
The MAX931-MAX934 single, dual, and quad micropower,
low-voltage comparators plus an on-board 2% accurate
reference feature the lowest power consumption available.
These comparators draw less than 4μA supply current
over temperature (MAX931), and include an internal
1.182V ±2% voltage reference, programmable hysteresis,
and TTL/CMOS outputs that sink and source current.
Ideal for 3V or 5V single-supply applications, the
MAX931-MAX934 operate from a single +2.5V to +11V
supply (or a ±1.25V to ±5V dual supply), and eachomparator’s input voltage range extends from the
negative supply rail to within 1.3V of the positive supply.
The MAX931-MAX934’s unique output stage continuously
sources as much as 40mA. And by eliminating power-
supply glitches that commonly occur when comparators
change logic states, the MAX931-MAX934 minimize
parasitic feedback, which makes them easier to use.
The single MAX931 and dual MAX932/MAX933 provide a
unique and simple method for adding hysteresis without
feedback and complicated equations, using the HYST pin
and two resistors.
For applications that require increased precision with
similar power requirements, see the MAX921-MAX924 data
sheet. These devices include a 1% precision reference.
________________________Applications
Battery-Powered Systems
Threshold Detectors
Window Comparators
Oscillator Circuits
Alarm Circuits
____________________________FeaturesUltra-Low 4μA Max Quiescent Current
Over Extended Temp. Range (MAX931)Power Supplies:
Single +2.5V to +11V
Dual ±1.25V to ±5.5VInput Voltage Range Includes Negative SupplyInternal 1.182V ±2% Bandgap Reference Adjustable Hysteresis TTL-/CMOS-Compatible Outputs12μs Propagation Delay (10mV Overdrive)No Switching Crowbar Current40mA Continuous Source CurrentAvailable in Space-Saving μMAX Packageltra Low-Power, Low-Costmparators with 2% Reference
MAX931
OUTGND1
THRESHOLD DETECTOR
VIN
IN+
IN-
HYST
REF
__________Typical Operating Circuit
19-0194; Rev 1; 2/97
8 SO-40°C to +85°CMAX931ESA
8 μMAX0°C to +70°CMAX931CUA
8 SO0°C to +70°CMAX931CSA
8 Plastic DIP0°C to +70°CMAX931CPA
PIN-PACKAGETEMP. RANGEPART
16-Pin
DIP/SONo4YesMAX934
8-Pin
DIP/SO/
μMAX
Yes2YesMAX933
8-Pin
DIP/SO/
μMAX
Yes2YesMAX932
8-Pin
DIP/SO/
μMAX
Yes1YesMAX931
PACK-
AGE
INTERNAL
HYSTERESIS
COMPARATORS
PER
PACKAGE
INTERNAL
2%
REFERENCE
PARTOrdering Information continued on last page.
For similar devices guaranteed over the military temp. range, see
the MAX921-MAX924 data sheet. The MAX931, MAX933, and
MAX934 are pin-compatible with the 1% accurate MAX921,
MAX923, and MAX924, respectively. The MAX932 and
MAX922 are notpin-compatible.
8 Plastic DIP-40°C to +85°CMAX931EPA
______________Ordering Information
ltra Low-Power, Low-Cost Comparators with 2% Reference
ABSOLUTE MAXIMUM RATINGS
V+ to V-, V+ to GND, GND to V-................................-0.3V, +12V
Inputs
Current, IN_+, IN_-, HYST...............................................20mA
Voltage, IN_+, IN_-, HYST................(V+ + 0.3V) to (V- – 0.3V)
Outputs
Current, REF....................................................................20mA
Current, OUT_.................................................................50mA
Voltage, REF....................................(V+ + 0.3V) to (V- – 0.3V)
Voltage, OUT_ (MAX931/934).....(V+ + 0.3V) to (GND – 0.3V)
Voltage, OUT_(MAX932/933)..........(V+ + 0.3V) to (V- – 0.3V)
OUT_ Short-Circuit Duration (V+ ≤5.5V)...............Continuous
Continuous Power Dissipation (TA= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin μMAX (derate 4.1mW/°C above +70°C).............330mW
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW
16-Pin SO (derate 8.70mW/°C above +70°C)................696mW
Operating Temperature Ranges:
MAX93_C_ _.......................................................0°C to +70°C
MAX93_E_ _.....................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
ELECTRICAL CHARACTERISTICS—5V Operation
(V+ = 5V, V- = GND = 0V, TA= TMINto TMAX, unless otherwise noted.)
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.
PARAMETER
MAX933,
HYST = REF
MIN TYP MAXUNITS
MAX934V-V+ – 1.3
MAX931,
HYST = REF
Supply CurrentIN+ = IN- + 100mVμA
Supply Voltage Range= +25°C, 100pF load
2.511V
MAX932,
HYST = REF
Input Offset Voltage
CONDITIONS
±10mV= +25°CInput Leakage Current (IN-, IN+)
(Note 1)
±0.01±5
Input Leakage Current (HYST)= +25°C
±0.02nA
Input Common-Mode Voltage Range
VCM= 2.5V
Common-Mode Rejection Ratio
IN+ = IN- = 2.5V, C/E temp. ranges
MAX931, MAX932, MAX933
0.11.0mV/V
Power-Supply Rejection Ratio
V- to (V+ – 1.3V)
V+ = 2.5V to 11V
100Hz to 100kHz
0.11.0mV/V
Voltage Noise
MAX931, MAX932, MAX933
Overdrive = 10mV
Overdrive = 100mVμVRMS
Hysteresis Input Voltage RangeREF – 0.05REFV= +25°CμsResponse Time= +25°C
C/E temp. ranges4
C/E temp. ranges6
C/E temp. ranges6
C/E temp. ranges8.5
POWER REQUIREMENTS
COMPARATOR
ltra Low-Power, Low-Costmparators with 2% ReferencePARAMETER
Voltage Noise
C/E temp. ranges, IOUT= 17mA
MIN TYP MAXUNITS
100Hz to 100kHz100μVRMS
CONDITIONSOutput High VoltageV+ – 0.4
V- + 0.425Source Current
GND + 0.4
Output Low Voltage15
Sink Current
1.1581.1821.206Reference Voltage
ELECTRICAL CHARACTERISTICS—5V Operation (continued)
(V+ = 5V, V- = GND = 0V, TA= TMINto TMAX, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS—3V Operation
(V+ = 3V, V- = GND = 0V, TA= TMINto TMAX, unless otherwise noted.)
PARAMETER
MAX933,
HYST = REF
MIN TYP MAXUNITS
MAX934
MAX931,
HYST = REF
Supply CurrentIN+ = (IN- + 100mV)
IN+ = IN- = 1.5V, C/E temp. ranges
MAX932,
HYST = REF
Input Offset Voltage
CONDITIONS
±10mV= +25°C
±0.01±1nAInput Leakage Current (IN-, IN+)
Input Leakage Current (HYST)= +25°C
±0.02nA
VCM= 1.5V
MAX931, MAX932, MAX933= +25°C= +25°C
Note 1:MAX934 comparators work below 2.5V, see Low-Voltage Operationsection for more details.
C temp. range
E temp. range1.1471.217= +25°C
C/E temp. ranges6= +25°C
C/E temp. ranges4
C/E temp. ranges3.8
C/E temp. ranges5.8
C/E temp. ranges
C/E temp. ranges
C/E temp. ranges,
IOUT= 1.8mA
MAX932,
MAX933
MAX931,
MAX934
POWER REQUIREMENTS
COMPARATOR
REFERENCE
ltra Low-Power, Low-CostComparators with 2% Reference
ELECTRICAL CHARACTERISTICS—3V Operation (continued)
(V+ = 3V, V- = GND = 0V, TA= TMINto TMAX, unless otherwise noted.)
PARAMETER
Voltage Noise
C/E temp. ranges, IOUT= 10mA
MIN TYP MAXUNITS
100Hz to 100kHz100μVRMS
Input Common-Mode Voltage RangeVV-V+ – 1.3
C/E temp. ranges, IOUT= 0.8mA= +25°C, 100pF load
MAX931
CONDITIONS
Common-Mode Rejection Ratio0.21mV/V
Power-Supply Rejection Ratio
V- to (V+ – 1.3V)
V+ = 2.5V to 11V
100Hz to 100kHz
0.11mV/V
Voltage Noise
MAX931, MAX932, MAX933
Overdrive = 10mV
Overdrive = 100mVμVRMS
Hysteresis Input Voltage RangeREF – 0.05REFVμsResponse Time5Output High VoltageV+ – 0.4
V- + 0.425Source Current= +25°C
GND + 0.4
Output Low Voltage15Sink Current
1.1581.1821.206= +25°C
Reference Voltage
C temp. range
E temp. range1.1471.217
C/E temp. ranges
C/E temp. ranges
MAX932,
MAX933
REFERENCE
ltra Low-Power, Low-Costmparators with 2% ReferenceREFERENCE VOLTAGE
vs. TEMPERATURE
AX921/924-TOC4
TEMPERATURE (°C)
(V100
EXTENDED TEMP. RANGE
COMMERCIAL
TEMP. RANGE
MAX931
SUPPLY CURRENT vs. TEMPERATURE
AX921/924-TOC5
TEMPERATURE (°C)
(m
V+ = 5V, V- = -5V
V+ = 3V, V- = 0V
V+ = 5V, V- = 0V
IN+ = IN- + 100mV
MAX932
SUPPLY CURRENT vs. TEMPERATURE
AX921/924-TOC6
TEMPERATURE (°C)
(m
V+ = 5V, V- = 0V
V+ = 3V, V- = 0V
IN+ = IN- +100mV
MAX933
SUPPLY CURRENT vs. TEMPERATURE
MAX921/924-TOC7
TEMPERATURE (°C)
(m
V+ = 5V, V- = 0V
V+ = 3V, V- = 0V
IN+ = IN- +100mV
MAX934
SUPPLY CURRENT vs. TEMPERATURE
AX921/924-TOC8
TEMPERATURE (°C)
IN+ = (IN- + 100mV)
V+ = 5V, V- = 0V
V+ = 3V, V- = 0V
V+ = 5V, V- = -5V
MAX934
SUPPLY CURRENT vs.
LOW SUPPLY VOLTAGES
AX921/924-TOC9
SINGLE-SUPPLY VOLTAGE (V)
(m
IN+ = IN- +100mV
__________________________________________Typical Operating Characteristics
(V+ = 5V, V- = GND, TA = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE LOW
vs. LOAD CURRENT
MAX921/4-TOC1
LOAD CURRENT (mA)
V+ = 5V
V+ = 3V
OUTPUT VOLTAGE HIGH vs.
LOAD CURRENT
AX921/924-TOC2
LOAD CURRENT (mA)
(V40
V+ = 5V
V+ = 3V
REFERENCE OUTPUT VOLTAGE vs.
OUTPUT LOAD CURRENT
AX921/924-TOC3
OUTPUT LOAD CURRENT (mA)
(V20
V+ = 5V
OR
V+ = 3V
SINK
SOURCE
ltra Low-Power, Low-Cost Comparators with 2% Reference
____________________________Typical Operating Characteristics (continued)
(V+ = 5V, V- = GND, TA = +25°C, unless otherwise noted.)21018
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVESM
AX921/924-TOC13
RESPONSE TIME (ms)
(V14
10050mV
100mV
20mV
10mV21018
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVESMAX921/924-TOC14
RESPONSE TIME (ms)
(V14
50mV
100mV
20mV
10mV
(m
MAX934 RESPONSE TIME
AT LOW SUPPLY VOLTAGES
MAX921/924-TO
C15
SINGLE-SUPPLY VOLTAGE (V)
(m
1.520mV OVERDRIVE100mV
OVERDRIVE
MAX934 OUTPUT DRIVE
AT LOW SUPPLY VOLTAGES
AX921/924-TOC16
SINGLE-SUPPLY VOLTAGE (V)
(m
SINK CURRENT AT VOUT = 0.4V
SOURCE CURRENT INTO 0.75V LOAD
SHORT-CIRCUIT SOURCE CURRENT
vs. SUPPLY VOLTAGE
160M
AX121/124-TOC17
TOTAL SUPPLY VOLTAGE (V)
(m
OUT CONNECTED TO V-10
SHORT-CIRCUIT SINK CURRENT
vs. SUPPLY VOLTAGE
MAX121/124-TO
C18
TOTAL SUPPLY VOLTAGE (V)
OUT CONNECTED TO V+
GND CONNECTED TO V-
HYSTERESIS CONTROL
MAX921/924 TOC10
VREF -VHYST (mV)
IN
- (V40
NO CHANGE
OUTPUT LOW
OUTPUT HIGH
TRANSFER FUNCTION
4.0M
AX921/924-TOC11
IN+ INPUT VOLTAGE (mV)
(V
100kV0
10mF2060100
RESPONSE TIME vs.
LOAD CAPACITANCE
MAX921/924 TOC12
LOAD CAPACITANCE (nF)
(m80
VOLH
VOHL
ltra Low-Power, Low-Costmparators with 2% Reference____________________________________________________________Pin Descriptions
PIN
MAX931MAX932MAX933NAMEFUNCTION4–INB+Noninverting input of comparator B5HYSTHysteresis input. Connect to REF if not used. Input voltage range is from
VREFto VREF- 50mV.66REFReference output. 1.182V with respect to V-.77V+Positive supply––OUTComparator output. Sinks and sources current. Swings from V+ to GND. 88OUTBComparator B output. Sinks and sources current. Swings from V+ to V-.
MAX934NAMEFUNCTIONOUTBComparator B output. Sinks and sources current. Swings from V+ to GND. OUTAComparator A output. Sinks and sources current. Swings from V+ to GND. V+Positive supplyINA-Inverting input of comparator AINA+Noninverting input of comparator AINB-Inverting input of comparator BINB+Noninverting input of comparator BREFReference output. 1.182V with respect to V-.V-Negative supply. Connect to ground for single-supply operation.INC-Inverting input of comparator CINC+Noninverting input of comparator CIND-Inverting input of comparator DIND+Noninverting input of comparator DGNDGround. Connect to V- for single-supply operation.OUTDComparator D output. Sinks and sources current. Swings from V+ to GND.OUTCComparator C output. Sinks and sources current. Swings from V+ to GND. –4INB-Inverting input of comparator B––GND11OUTAComparator A output. Sinks and sources current. Swings from V+ to V-.2 2V-Negative supply. Connect to ground for single-supply operation (MAX931).33INA+Noninverting input of comparator A––IN+Noninverting comparator input––IN-Inverting comparator input
Ground. Connect to V- for single-supply operation. Output swings from V+ to GND.
PIN
ltra Low-Power, Low-Cost Comparators with 2% Reference
_______________Detailed Description
The MAX931-MAX934 comprise various combinations
of a micropower 1.182V reference and a micropower
comparator. The Typical Operating Circuitshows the
MAX931 configuration, and Figures 1a-1c show the
MAX932/MAX933/MAX934 configurations.
Each comparator continuously sources up to 40mA, and
the unique output stage eliminates crowbar glitches
during output transitions. This makes them immune to
parasitic feedback (which can cause instability) and
provides excellent performance, even when circuit-
board layout is not optimal.
Internal hysteresis in the MAX931/MAX932/MAX933rovides the easiest method for implementing
hysteresis. It also produces faster hysteresis action
and consumes much less current than circuits using
external positive feedback.
Power-Supply and Input Signal Ranges
This family of devices operates from a single +2.5V to
+11V power supply. The MAX931 and MAX934 have
a separate ground for the output driver, allowing
operation with dual supplies ranging from ±1.25V to
±5.5V. Connect V- to GND when operating the
MAX931 and the MAX934 from a single supply. The
maximum supply voltage in this case is still 11V.
For proper comparator operation, the input signal can
be driven from the negative supply (V-) to within one
volt of the positive supply (V+ - 1V). The guaranteed
common-mode input voltage range extends from
V- to (V+ - 1.3V). The inputs can be taken above and
below the supply rails by up to 300mV without damage.
Operating the MAX931 and MAX934 at ±5V provides
TTL/CMOS compatibility when monitoring bipolar input
signals. TTL compatibility for the MAX932 and MAX933
is achieved by operation from a single +5V supply.
Low-Voltage Operation: V+ = 1V
(MAX934 Only)
The guaranteed minimum operating voltage is 2.5V (or
±1.25V). As the total supply voltage is reduced below
2.5V, the performance degrades and the supply
OUTA
INA+
INB+
OUTB
REF
HYST
MAX9321
Figure 1a.MAX932 Functional Diagram
OUTA
INA+
INB-
OUTB
REF
HYST
MAX9331
Figure 1b.MAX933 Functional Diagram
OUTA
INA-
INA+
OUTD
GND
IND+
IND-
MAX934
OUTB
INB-
INB+
REF
OUTC
INC+
INC-DC
Figure 1c.MAX934 Functional Diagram

Partno	Mfg	Dc	Qty	Available	Descript
MAX934	MAXIM	N/a	19	avai	Ultra-Low-Power, Low-Cost Comparators with 2% Reference