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19-1266; Rev 0b; 7/97
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
_______________General Description
The MAX987/MAX988/MAX991/MAX992/MAX995/ MAX996 single/dual/quad micropower comparators feature low-voltage operation and Rail-to-Rail(R) inputs and outputs. Their operating voltage ranges from +2.5V to +5.5V, making them ideal for both 3V and 5V systems. These comparators also operate with 1.25V to 2.75V dual supplies. They consume only 48A per comparator while achieving a 120ns propagation delay. The common-mode input voltage range extends 250mV beyond the supply rails. Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis ensures clean output switching, even with slow-moving input signals. The output stage's unique design limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX987/MAX991/MAX995 have a push/pull output stage that sinks as well as sources current. Large internal output drivers allow railto-rail output swing with loads up to 8mA. The MAX988/MAX992/MAX996 have an open-drain output stage that can be pulled beyond V CC to 6V (max) above VEE. These open-drain versions are ideal for level translators and bipolar to single-ended converters. The single MAX987/MAX988 are available in tiny 5-pin SOT23 packages.
____________________________Features
o 120ns Propagation Delay o 48A Quiescent Supply Current o +2.5V to +5.5V Single-Supply Operation o Common-Mode Input Voltage Range Extends 250mV Beyond the Rails o Push/Pull Output Stage Sinks and Sources 8mA Current (MAX987/MAX991/MAX995) o Open-Drain Output Voltage Extends Beyond VCC (MAX988/MAX992/MAX996) o Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption o 100A Supply Current at 1MHz Switching Frequency o No Phase Reversal for Overdriven Inputs o Available in Space-Saving Packages: 5-Pin SOT23 (MAX987/MAX988) 8-Pin MAX (MAX991/MAX992)
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
______________Ordering Information
PART MAX987EUK-T MAX987ESA MAX988EUK-T MAX988ESA TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 5 SOT23-5 8 SO 5 SOT23-5 8 SO SOT TOP MARK ABZB -- ABZC --
_____________________Selector Guide
PART MAX987 MAX988 MAX991 MAX992 MAX995 MAX996 COMPARATORS PER PACKAGE 1 1 2 2 4 4 OUTPUT STAGE Push/Pull Open-Drain Push/Pull Open-Drain Push/Pull Open-Drain PINPACKAGE 8 SO/ 5 SOT23-5 8 SO/ 5 SOT23-5 8 SO/MAX 8 SO/MAX 14 SO 14 SO
Ordering Information continued at end of data sheet. Typical Application Circuit appears at end of data sheet.
_________________Pin Configurations
TOP VIEW
OUT 1 5 VEE
________________________Applications
Portable/BatteryPowered Systems Mobile Communications Zero-Crossing Detectors Window Comparators Level Translators Threshold Detectors/ Discriminators Ground/Supply Sensing IR Receivers Digital Line Receivers
VCC 2
MAX987 MAX988
4 IN-
IN+ 3
SOT23 Pin Configurations continued at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
1
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ...................................................6V IN_-, IN_+ to VEE .......................................-0.3V to (VCC + 0.3V) OUT_ to VEE MAX987/MAX991/MAX995 ....................-0.3V to (VCC + 0.3V) MAX988/MAX992/MAX996.....................................-0.3V to 6V OUT_ Short-Circuit Duration to VEE or VCC .......................10sec Continuous Power Dissipation (TA = +70C) 5-Pin SOT23 (derate 7.10mW/C above +70C)...........571mW 8-Pin SO (derate 5.88mW/C above +70C).................471mW 8-Pin MAX (derate 4.10mW/C above +70C) ............330mW 14-Pin SO (derate 8.33 mW/C above +70C)..............667mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C 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 (Note 1)
(VCC = +2.7V to +5.5V, VEE = 0V, VCM = 0V, TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER Supply Voltage Supply Current per Comparator Power-Supply Rejection Ratio Common-Mode Voltage Range (Note 2) Input Offset Voltage (Note 3) Input Hysteresis Input Bias Current (Note 4) Input Offset Current Input Capacitance Common-Mode Rejection Ratio Output Leakage Current (MAX988/MAX992/ MAX996 only) Output Short-Circuit Current SYMBOL VCC CONDITIONS Inferred from PSRR test VCC = 5V ICC VCC = 2.7V PSRR VCMR 2.5V VCC 5.5V TA = +25C TA = -40C to +85C VOS VHYST IB IOS CIN CMRR ILEAK VOUT = high Sourcing or sinking, VOUT = VEE or VCC VCC = 5V, ISINK = 8mA VCC = 2.7V, ISINK = 3.5mA VCC = 5V, ISOURCE = 8mA VCC = 2.7V, ISOURCE = 3.5mA TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C 4.6 4.45 2.4 2.3 2.55 4.85 V 0.15 VCC = 5V VCC = 2.7V 95 35 0.2 0.4 0.55 0.3 0.4 V 50 Full common-mode range TA = +25C TA = -40C to +85C 2.5 0.001 0.5 1.0 80 1.0 10 TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C 55 VEE 0.25 VEE 0.5 80 VCC + 0.25 VCC 5 7 mV mV nA pA pF dB A 48 MIN 2.5 53 TYP MAX 5.5 80 96 80 96 dB V A UNITS V
ISC
mA
OUT Output Voltage Low
VOL
OUT Output Voltage High (MAX987/MAX991/ MAX995 only)
VOH
2
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High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +2.7V to +5.5V, VEE = 0V, VCM = 0V, TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER OUT Rise Time (MAX987/MAX991/ MAX995 only) OUT Fall Time SYMBOL tRISE VCC = 5.0V CONDITIONS CL = 15pF CL = 50pF CL = 200pF CL = 15pF tFALL VCC = 5.0V CL = 50pF CL = 200pF MAX987/MAX991/ 10mV overdrive MAX995 only 100mV overdrive tPDPropagation Delay CL = 15pF, MAX988/MAX992/ 10mV overdrive VCC = 5V MAX996 only, RPULL-UP = 5.1k 100mV overdrive MAX987/MAX991/MAX995 only, CL = 15pF, VCC = 5V 10mV overdrive 100mV overdrive MIN TYP 15 20 40 15 20 40 210 120 210 ns 120 210 120 25 s ns ns MAX UNITS
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
tPD+ Power-Up Time tPU
Note 1: The MAX98 _EUK specifications are 100% tested at TA = +25C. Limits over the extended temperature range are guaranteed by design, not production tested. Note 2: Inferred from the VOS test. Either or both inputs can be driven 0.3V beyond either supply rail without output phase reversal. Note 3: VOS is defined as the center of the hysteresis band at the input. Note 4: IB is defined as the average of the two input bias currents (IB-, IB+).
_______________________________________________________________________________________
3
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
__________________________________________Typical Operating Characteristics
(VCC = 5V, VCM = 0V, TA = +25C, unless otherwise noted.)
SUPPLY CURRENT PER COMPARATOR vs. TEMPERATURE
MAX9879 TOC1
SUPPLY CURRENT PER COMPARATOR vs. OUTPUT TRANSITION FREQUENCY
MAX987 TOC2
90 VIN+ > VIN80 SUPPLY CURRENT (A) 70 VCC = 5.5.V 60 50 40 30 -60 -40 -20 0 20 40 60 80 VCC = 2.5.V
1000
SUPPLY CURRENT (A)
VCC = 5.5V 100 VCC = 2.5V
10 100 0.01 0.1 1 10 100 1000 10,000 TEMPERATURE (C) OUTPUT TRANSITION FREQUENCY (kHz)
OUTPUT HIGH VOLTAGE vs. OUTPUT SOURCE CURRENT
MAX987-04
OUTPUT LOW VOLTAGE vs. OUTPUT SINK CURRENT
VIN+ < VINOUTPUT LOW VOLTAGE (mV) (VOL) 1000 VCC = 2.7V 100
MAX987-03a
10,000 VIN+ > VIN1000 OUTPUT HIGH VOLTAGE (mV) (VCC - VOH)
10,000
100
VCC = 2.7V VCC = 5.0V
10
VCC = 5.0V
1
10
0.1 0.01 0.1 1 10 100 OUTPUT SOURCE CURRENT (mA)
1 0.01 0.1 1 10 100 OUTPUT SINK CURRENT (mA)
OUTPUT SHORT-CIRCUIT CURRENT vs. TEMPERATURE
MAX987 05
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX987 06
120 110 100 90 80 70 60 50 40 30 20 10 0 -60 -40 -20 0 20 40 60 80
1.1 0.9 OFFSET VOLTAGE (mV) 0.7 0.5 0.3 0.1 -0.1 -0.3
OUTPUT SINK CURRENT (mA)
VCC = 5.0V
VCC = 2.7V
100
-60
-40
-20
0
20
40
60
80
100
TEMPERATURE (C)
TEMPERATURE (C)
4
_______________________________________________________________________________________
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
__________________________________________Typical Operating Characteristics
(VCC = 5V, VCM = 0V, TA = +25C, unless otherwise noted.)
PROPAGATION DELAY vs. CAPACITIVE LOAD
MAX987 TOC8
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
PROPAGATION DELAY vs. TEMPERATURE
190 PROPAGATION DELAY (ns) 180 170 160 150 140 130 120 110 VCC = 5.5.V VCC = 2.5.V VOD = 50mV
MAX987 TOC9
10,000 VOD = 50mV PROPAGATION DELAY (ns)
200
1000
100 0.01
100 0.1 1 10 100 1000 -60 -40 -20 0 20 40 60 80 100 CAPACITIVE LOAD (nF) TEMPERATURE (C)
PROPAGATION DELAY vs. INPUT OVERDRIVE
MAX987 TOC10
MAX987/MAX991/MAX995 PROPAGATION DELAY (tPD+)
MAX987-11
300 250 PROPAGATION DELAY (ns) 200 VCC = 2.5V 150 100 50 0 0 20 40 60 80 100 120 VCC = 5.5V
VOD = 50mV IN+ 50mV/ div
OUT
2V/div
140
100ns/div
INPUT OVERDRIVE (mV)
PROPAGATION DELAY (tPD-)
MAX987-12
MAX987/MAX991/MAX995 SWITCHING CURRENT, OUT RISING
MAX987-13
VOD = 50mV IN+ 50mV/ div IN+ 50mV/ div
2V/div OUT
OUT
2V/div
ICC
2mA/div
VOD = 50mV 100ns/div 200ns/div
_______________________________________________________________________________________
5
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
____________________________Typical Operating Characteristics (continued)
(VCC = 5V, VCM = 0V, TA = +25C, unless otherwise noted.)
SWITCHING CURRENT, OUT FALLING
MAX987-14
1MHZ RESPONSE
MAX987-15
VOD = 50mV IN+ 50mV/ div IN+ 50mV/ div
OUT
2V/div
ICC
2mA/div
OUT
2V/div
VOD = 50mV 200ns/div 200ns/div
POWER-UP DELAY
MAX987-16
VIN- = 50mV VIN+ = 0V
VCC
2V/div
OUT
2V/div
5s/div
6
_______________________________________________________________________________________
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
______________________________________________________________Pin Description
PIN MAX987 MAX988 SOT23-5 1 2 3 4 5 -- -- -- -- -- -- -- -- -- -- -- -- -- SO 6 7 3 2 4 -- -- -- -- -- -- -- -- -- -- -- -- 1, 5, 8 MAX991 MAX996 SO/MAX -- 8 -- -- 4 1 2 3 5 6 7 -- -- -- -- -- -- -- MAX995 MAX996 SO -- 4 -- -- 11 1 2 3 5 6 7 8 9 10 12 13 14 -- OUT VCC IN+ INVEE OUTA INAINA+ INB+ INBOUTB OUTC INCINC+ IND+ INDOUTD N.C. Comparator Output Positive Supply Voltage Comparator Noninverting Input Comparator Inverting Input Negative Supply Voltage Comparator A Output Comparator A Inverting Input Comparator A Noninverting Input Comparator B Noninverting Input Comparator B Inverting Input Comparator B Output Comparator C Output Comparator C Inverting Input Comparator C Noninverting Input Comparator D Noninverting Input Comparator D Inverting Input Comparator D Output No Connection. Not internally connected. NAME FUNCTION
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
_______________________________________________________________________________________
7
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
_______________Detailed Description
The MAX987/MAX988/MAX991/MAX992/MAX995/ MAX996 are single/dual/quad low-power, low-voltage comparators. They have an operating supply voltage range between +2.5V and +5.5V and consume only 48A per comparator, while achieving 120ns propagation delay. Their common-mode input voltage range extends 0.25V beyond each rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals. Large internal output drivers allow rail-torail output swing with up to 8mA loads. The output stage employs a unique design that minimizes supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX987/MAX991/MAX995 have a push/pull output structure that sinks as well as sources current. The MAX988/MAX992/MAX996 have an opendrain output stage that can be pulled beyond VCC to an absolute maximum of 6V above VEE.
__________Applications Information
Additional Hysteresis
MAX987/MAX991/MAX995 The MAX987/MAX991/MAX995 have 2.5mV internal hysteresis. Additional hysteresis can be generated with three resistors using positive feedback (Figure 1). Unfortunately, this method also slows hysteresis response time. Use the following procedure to calculate resistor values for the MAX987/MAX991/MAX995.
1) Select R3. Leakage current at IN is under 10nA; therefore, the current through R3 should be at least 1A to minimize errors caused by leakage current. The current through R3 at the trip point is (VREF VOUT) / R3. Considering the two possible output states and solving for R3 yields two formulas: R3 = V REF / 1A or R3 = (V REF - V CC) / 1A. Use the smaller of the two resulting resistor values. For example, if VREF = 1.2V and VCC = 5V, then the two R3 resistor values are 1.2M and 3.8M. Choose a 1.2M standard value for R3. 2) Choose the hysteresis band required (VHB). For this example, choose 50mV. 3) Calculate R1 according to the following equation: R1 = R3 x (VHB / VCC) For this example, insert the values R1 = 1.2M x (50mV / 5V) = 12k. 4) Choose the trip point for VIN rising (VTHR; VTHF is the trip point for VIN falling). This is the threshold voltage at which the comparator switches its output from low to high as VIN rises above the trip point. For this example, choose 3V.
Input Stage Circuitry
The devices' input common-mode range extends from -0.25V to (VCC + 0.25V). These comparators may operate at any differential input voltage within these limits. Input bias current is typically 1.0pA if the input voltage is between the supply rails. Comparator inputs are protected from overvoltage by internal body diodes connected to the supply rails. As the input voltage exceeds the supply rails, these body diodes become forward biased and begin to conduct. Consequently, bias currents increase exponentially as the input voltage exceeds the supply rails.
Output Stage Circuitry
These comparators contain a unique output stage capable of rail-to-rail operation with up to 8mA loads. Many comparators consume orders of magnitude more current during switching than during steady-state operation. However, with this family of comparators, the supply-current change during an output transition is extremely small. The Typical Operating Characteristics graph Supply Current vs. Output Transition Frequency shows the minimal supply-current increase as the output switching frequency approaches 1MHz. This characteristic eliminates the need for power-supply filter capacitors to reduce glitches created by comparator switching currents. Battery life increases substantially in high-speed, battery-powered applications.
VCC R3
R1 VIN VCC R2 VEE
0.1F OUT
VREF
MAX987 MAX991 MAX995
Figure 1. Additional Hysteresis (MAX987/MAX991/MAX995)
8
_______________________________________________________________________________________
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
5) Calculate R2 as shown. For this example, choose an 8.2k standard value: 1 R2 = VTHR 1 1 V - R1 - R 3 REF x R1 R2 = 1 = 8.03k 1 1 3.0V - - 12k 2.2M 1.2 x 12k Use the following procedure to calculate resistor values: 1) Select R3 according to the formulas R3 = VREF / 1A or R3 = (VREF - VCC) / 1A - R4. Use the smaller of the two resulting resistor values. 2) Choose the hysteresis band required (VHB). For this example, choose 50mV. 3) Calculate R1 according to the following equation: R1 = (R3 + R4) x (VHB / VCC) 4) Choose the trip point for VIN rising (VTHR; VTHF is the trip point for VIN falling). This is the threshold voltage at which the comparator switches its output from low to high as VIN rises above the trip point. 5) Calculate R2 as follows: R2 = 1 VTHR 1 1 V - R1 - R 3 + R4 REF x R1
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
6) Verify trip voltages and hysteresis as follows: 1 1 1 VIN rising: VTHR = VREF x R1 x + + R2 R3 R1 R1 x VCC VIN falling : VTHF = VTHR - R3 Hysteresis = VTHR - VTHF
MAX988/MAX992/MAX996 The MAX988/MAX992/MAX996 have 2.5mV internal hysteresis. They have open-drain outputs and require an external pull-up resistor (Figure 2). Additional hysteresis can be generated using positive feedback, but the formulas differ slightly from those of the MAX987/MAX991/MAX995.
6) Verify trip voltages and hysteresis as follows: VIN rising: VTHR = VREF x R1 x 1 1 1 + + R2 R3 + R4 R1 R1 x VCC VIN falling : VTHF = VTHR - R3 + R4 Hysteresis = VTHR - VTHF
VCC R3 0.1F R1 VIN VCC R2 VEE OUT R4
Circuit Layout and Bypassing
These comparators' high-gain bandwidth requires design precautions to maximize their high-speed capability. The recommended precautions are: 1) Use a printed circuit board with an unbroken, lowinductance ground plane. 2) Place a decoupling capacitor (a 0.1F ceramic capacitor is a good choice) as close to V CC as possible. 3) On the inputs and outputs, keep lead lengths short to avoid unwanted parasitic feedback around the comparators. 4) Solder the devices directly to the printed circuit board instead of using a socket.
VREF
MAX988 MAX992 MAX996
Figure 2. Additional Hysteresis (MAX988/MAX992/MAX996)
_______________________________________________________________________________________
9
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
Zero-Crossing Detector
Figure 3 shows a zero-crossing detector application. The MAX987's inverting input is connected to ground, and its noninverting input is connected to a 100mVp-p signal source. As the signal at the noninverting input crosses 0V, the comparator's output changes state.
Logic-Level Translator
Figure 4 shows an application that converts 5V logic levels to 3V logic levels. The MAX988 is powered by the +5V supply voltage, and the pull-up resistor for the MAX988's open-drain output is connected to the +3V supply voltage. This configuration allows the full 5V logic swing without creating overvoltage on the 3V logic inputs. For 3V to 5V logic-level translation, simply connect the +3V supply to VCC and the +5V supply to the pull-up resistor.
+5V (+3V)
VCC 0.1F 2 100mV 4 IN+ OUT 1 3 IN100k 3 IN+ VCC 100k 4 IN-
0.1F +3V (+5V) 2 VCC RPULL-UP 1 3V (5V) LOGIC OUT
OUT
MAX987
VEE 5 5V (3V) LOGIC IN VEE 5
MAX988
Figure 3. Zero-Crossing Detector
Figure 4. Logic-Level Translator
_____________________________________________Pin Configurations (continued)
TOP VIEW
N.C. 1 IN- 2 IN+ 3 VEE 4
8 7
N.C. VCC OUT N.C.
OUTA 1 INA- 2 INA+ 3 VEE 4
8 7
VCC OUTB INBINB+
OUTA 1 INA- 2 INA+ 3
14 OUTD 13 IND12 IND+
MAX987 MAX988
6 5
MAX991 MAX992
6 5
VCC 4 INB+ 5 INB- 6
MAX995 MAX996
11 VEE 10 INC+ 9 8 INCOUTC
SO
SO/MAX
OUTB 7
SO
10
______________________________________________________________________________________
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators
________Typical Application Circuit
VCC
_Ordering Information (continued)
PART MAX991ESA TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 8 SO 8 MAX 8 SO 8 MAX 14 SO 14 SO SOT TOP MARK -- -- -- -- -- --
MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
VIN VCC IN+ OUT IN-
0.1F
*RPULL-UP
MAX991EUA MAX992ESA MAX992EUA MAX995ESD MAX996ESD
MAX98_ MAX99_
VEE VREF
* MAX988/MAX992/MAX996 ONLY
THRESHOLD DETECTOR
__________________________________________________Tape-and-Reel Information
4.0 0.1 1.0 0.1 1.5 +0.1/-0.0 DIAMETER 2.0 0.05 1.75 0.1 A
3.5 0.05 2.2 0.1
8.0 0.3
0.5 RADIUS TYPICAL Bo 0.30 0.05 0.8 0.05 0.30R MAX.
4.0 0.1
A0 A
1.0 MINIMUM
Ko
Ao = 3.1mm 0.1 Bo = 2.7mm 0.1 Ko = 1.2mm 0.1
NOTE: DIMENSIONS ARE IN MM. AND FOLLOW EIA481-1 STANDARD.
______________________________________________________________________________________
11
High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O Comparators MAX987/MAX988/MAX991/MAX992/MAX995/MAX996
________________________________________________________Package Information
SOT5L.EPS
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1997 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
8LUMAXD.EPS

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