Micropower, Single-Supply, UCSP/SOT23 Comparator + Precision Reference ICs MAX9038 MAX9043/ MAX9050 MAX9053. Features. General Description

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1 General Description The MAX938 MAX943 and feature combinations of low-power comparators and precision voltage references. Their operating voltage range makes them ideal for both 3 and 5 systems. The MAX939/ MAX94/MAX94/MAX95/MAX95 have a single comparator and reference consuming only 4μA of supply current. The MAX942/MAX943/MAX952/MAX953 have dual comparators and one reference, and consume only 55μA of supply current. Low-voltage operation and low supply current make these devices ideal for batteryoperated systems. The comparators feature rail-to-rail inputs and outputs, with a common-mode input voltage range that extends 25m beyond the supply rails. Input bias current is typically.pa, and input offset voltage is typically.5m. Internal hysteresis ensures clean output switching, even with slow-moving input signals. The output stage features a unique design that limits supply current surges while switching, virtually eliminating supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The comparator outputs have railto-rail, push-pull output stages except the MAX938 has an open-drain output that sinks and sources up to 8mA. The propagation delay is 4ns, even with the low-operating supply current. The reference output voltage is set to.23 in the MAX938/ MAX939, to 2.48 in the MAX94 MAX943, and to 2.5 in the. The MAX94 MAX943 and the are offered in two grades: an A grade with.4% initial accuracy and 6ppm/ C tempco, and a B grade with % initial accuracy (except MAX938/MAX939 have an initial accuracy of ±.4%) and ppm/ C tempco. The voltage references feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors. These series-mode references can sink or source up to 5μA of load current. Applications Precision Battery Management Window Comparators IR Receivers Level Translators Digital Line Receivers Typical Operating Circuit and Functional Diagrams appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. Features Comparator + Precision Reference in UCSP/SOT to 5.5 Single-Supply Operation (MAX938 MAX943) Low Supply Current (MAX938/MAX939/MAX94/ MAX94/MAX95/MAX95) 4μA Quiescent 5μA with khz Switching Open-Drain Output MAX938 4ns Propagation Delay Rail-to-Rail Inputs Rail-to-Rail Output Stage Sinks and Sources 8mA Internal ±3m Hysteresis oltage Reference Offers ±.4% (max) Initial Accuracy (A Grade) 6ppm/ C (typ) Temperature Coefficient (A Grade) Stable for to 4.7nF Capacitive Loads Ordering Information PART TEMP RANGE PIN- PACKAGE +Denotes lead(pb)-free/rohs-compliant package. Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. TOP MARK MAX938BABT+T -4 C to +25 C 6 UCSP ADW MAX939BEBT+T -4 C to +85 C 6 UCSP AAZ MAX94AEUK+T -4 C to +85 C 5 SOT23 ADNW MAX94BEUK+T -4 C to +85 C 5 SOT23 ADNX MAX94AEUT+T -4 C to +85 C 6 SOT23 AAHF MAX94BEUT+T -4 C to +85 C 6 SOT23 AAHH MAX94AESA -4 C to +85 C 8 SO MAX94BESA -4 C to +85 C 8 SO Pin Configurations TOP IEW (BUMPS ON BOTTOM) IN- B A MAX938 MAX939 B2 A2 B3 A3 TOP IEW + MAX94 MAX95 UCSP SOT23 Pin Configurations continued at end of data sheet ; Rev ; /7

2 Absolute Maximum Ratings Supply oltage ( to ) to +6 (MAX938) to +6 All Other Pins...( -.3) to ( +.3) Current into Input Pins...±2mA Output Short-Circuit Duration (_, )...Indefinite Short Circuit to Either Supply Continuous Power Dissipation (T A = +7 C) 5-Pin SOT23 (derate 7.mW/ C above +7 C)...57mW 6-Bump UCSP (derate 3.9mW/ C above +7 C)...38mW 6-Pin SOT23 (derate 8.7mW/ C above +7 C)...696mW 8-Pin SO (derate 5.88mW/ C above +7 C)...47mW 8-Pin μmax (derate 4.mW/ C above +7 C)...33mW -Pin μmax (derate 5.6mW/ C above +7 C)...444mW Operating Temperature Range C to +85 C Junction Temperature...+5 C Storage Temperature Range C to +5 C Lead Temperature (soldering, s)...+3 C Bump Reflow Temperature (Note ) C Note : This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recommended in the industry-standard specification, JEDEC 2A, paragraph 7.6, Table 3 for IR/PR and Convection Packaging Reflow. Preheating is required. Hand or wave soldering is not allowed. 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 A Grade (.4% Initial Accuracy) ( = +5, =, CM =, I = A, I = A, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX94 MAX Supply oltage Range (Note 3) MAX94/MAX94/ = Supply Current I CC MAX95/MAX95 = MAX942/MAX943/ = µa MAX952/MAX953 = COMPARATORS common-mode m Over entire T A = +25 C ±.5 ±5. Input Offset oltage (Note 4) OS range T A = -4 C to +85 C ±7. Input Hysteresis HYST ±3. m Input Bias Current (Notes 5, 6, 7) I B Specified common-mode range ±. ±. na Input Offset Current (Note 5) I OS Specified common-mode range ±.5 pa Common-Mode oltage Range T A = +25 C EE - + CMR (Notes 5, 8) T A = -4 C to +85 C Common-Mode Rejection Ratio (Note 5) CMRR Specified common-mode range 52 8 db Power-Supply Rejection Ratio PSRR MAX94 MAX943, MAX95-MAX953, db Input Capacitance (Note 5) C IN 2.5 pf = 5 95 Output Short-Circuit Current I SC = or = ma = 5, I SINK = 8mA.2.55 Output oltage Low OL = 2.7, I SINK = 3.5mA.5.4 μmax is a registered trademark of Maxim Integrated Products, Inc. Maxim Integrated 2

3 Electrical Characteristics A Grade (.4% Initial Accuracy) (continued) ( = +5, =, CM =, I = A, I = A, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS = 5, I SOURCE = 8mA Output oltage High OH = 2.7, I SOURCE = 3.5mA Output Rise/Fall Times t R /t F C L = 5pF 5 C L = 5pF 4 C L = 2pF 8 Output Propagation Delay t PD+ / C L = 5pF, 5m overdrive 45 (Note 9) t PD- = 2.7 m overdrive 4 ns Power-Up Time t PU Time to valid logic state 2 µs OLTAGE ERENCE Output oltage T A = +25 C MAX94 MAX Output oltage Temperature µmax/so 6 3 TC Coefficient (Note ) SOT ppm/ C Line Regulation Δ / , MAX94 MAX Δ , µ/ Load Regulation Δ / Sourcing. µa I 5µA 2 4 ΔI Sinking, -5µA I µa µ/µa Output Short-Circuit Current I SC = or 4 ma Thermal Hysteresis (Note ) THYST 3 ppm Long-Term Stability h at T A = +25 C 5 ppm f =.Hz to Hz 4 µ P-P Noise oltage E f = Hz to khz 5 µ RMS Ripple Rejection Δ / Δ = 5 ±m, f = 2Hz 84 db Turn-On Settling Time t R ( ) To = % of final value 2 µs Capacitive-Load Stability Range (Note 7) C L ( ) 4.7 nf ns Electrical Characteristics B Grade (% Initial Accuracy) (Note 2) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX938 MAX Supply oltage Range (Note 3) MAX95 MAX MAX938/MAX939/ = Supply Current I CC MAX94/MAX94/ MAX95/MAX95 = µa MAX942/MAX943/ = MAX952/MAX553 = Maxim Integrated 3

4 Electrical Characteristics B Grade (% Initial Accuracy) (Note 2) (continued) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS COMPARATOR Input Offset oltage (Note 4) OS Over entire common-mode range ± ±9. m Input Hysteresis HYST ±3. m Input Bias Current (Notes 5, 6, 7) I B Specified common-mode range ±. ±25. na Input Offset Current (Note 5) I OS Specified common-mode range ±.5 pa Common-Mode oltage Range (Notes 5, 8) CMR Common-Mode Rejection Ratio (Note 5) CMRR Specified common-mode range 52 8 db Power-Supply Rejection Ratio PSRR MAX938 MAX943, , db Input Capacitance (Note 5) C IN 2.5 pf = 5 95 Output Short-Circuit Current I SC = or = ma = 5, I SINK = 8mA.2.55 Output oltage Low OL = 2.7, I SINK = 3.5mA.5 Output oltage High (Except = 5, I SOURCE = 8mA MAX938) OH = 2.7, I SOURCE = 3.5mA 2.55 Output Leakage MAX938.5 µa C L = 5pF 5 ns C L = 5pF 4 C L = 2pF 8 R PU = kω, C L = 5pF, MAX938 8 ns R PU = kω, C L = 5pF, MAX938 4 R PU = kω, C L = 2pF, MAX Output Propagation Delay C t (Note 9) PD+ /t L = 5pF, 5m overdrive 45 PD- = 2.7 m overdrive 4 ns R PU = kω, CL = 5pF, MAX938 5 Output Rising Propagation Delay t (Note 9) PD+ R PU = kω, CL = 5pF, MAX R PU = kω, CL = 2pF, MAX ns Power-Up Time t PU Time to valid logic state 2 µs OLTAGE ERENCE Output oltage T A = +25 C Output oltage Temperature Coefficient (Note ) MAX938/MAX939 (Note 2) MAX94 MAX TC 2 ppm/ C Maxim Integrated 4

5 Electrical Characteristics B Grade (% Initial Accuracy) (Note 2) (continued) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25 C.) (Note 2) Line Regulation Load Regulation PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Δ / Δ MAX938 MAX Δ / Sourcing: µa I 5µA 2 4 ΔI Sinking: -5µA I µa Output Short-Circuit Current I SC = or 4 ma Thermal Hysteresis (Note ) T HYST 3 ppm Long-Term Stability h at T A = +25 C ppm Ripple Rejection Note 2: All devices are % production tested at T A = +25 C. Limits over the extended temperature range are guaranteed by design. Note 3: Supply voltage range guaranteed by PSRR test on comparator and line regulation of. Note 4: OS is defined as the center of the input-referred hysteresis band. Note 5: For the comparators with the inverting input (IN-) uncommitted. Note 6: Input bias current is the average of the inverting and noninverting input bias currents. Note 7: Not production tested. Guaranteed by design. Note 8: Guaranteed by CMRR test. Note 9: OERDRIE is beyond the offset and hysteresis determined trip point. Note : Temperature coefficient is measured by the box method; i.e., the maximum Δ is divided by the maximum ΔT. Note : Thermal hysteresis is defined as the change in at +25 C before and after cycling the device from T MIN to T MAX. Note 2: MAX938/MAX939 has an initial accuracy of ±.4%. µ/ µ/µa Δ / Δ = 5 ±m, f = 2Hz 84 db Turn-On Settling Time t R ( ) To = % of final value 2 µs Capacitive Load Stability Range (Note 7) C L ( ) 4.7 nf Typical Operating Characteristics ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = +25 C, unless otherwise noted.) SUPPLY CURRENT (µa) MAX939/MAX94/MAX94/MAX95/MAX95 SUPPLY CURRENT vs. TEMPERATURE 6 > IN- = = MAX938 toc SUPPLY CURRENT (µa) MAX942/MAX943/MAX952/MAX953 SUPPLY CURRENT vs. TEMPERATURE > IN- = 5. = 2.7 MAX938 toc2 SUPPLY CURRENT (µa) MAX939/MAX94/MAX94/MAX95/MAX95 SUPPLY CURRENT vs. SWITCHING FREQUENCY 2 5 = 5. 5 = 2.7 MAX938 toc SWITCHING FREQUENCY (khz) Maxim Integrated 5

6 Typical Operating Characteristics (continued) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = +25 C, unless otherwise noted.) SUPPLY CURRENT (µa) MAX938 SUPPLY CURRENT vs. SWITCHING FREQUENCY = 5 = 2.7 MAX938 toc3a SUPPLY CURRENT (µa) MAX942/MAX943/MAX952/MAX953 SUPPLY CURRENT vs. SWITCHING FREQUENCY = 5. 5 = 2.7 MAX938 toc4 OL (m), PUT LOW OLTAGE vs. PUT SINK CURRENT < IN- = 2.7 = 5. MAX938 toc5 k M FREQUENCY (Hz).. SWITCHING FREQUENCY (khz)... PUT SINK CURRENT (ma) SUPPLY CURRENT (µa) MAX938 PUT LOW OLTAGE vs. PUT SINK CURRENT MAX938 toc5a PUT HIGH OLTAGE (CC - OH) (m), PUT HIGH OLTAGE vs. PUT SOURCE CURRENT > IN- = 2.7 = 5. MAX938 toc PUT SINK CURRENT (ma)... PUT SOURCE CURRENT (ma) PUT SOURCE CURRENT (ma) PUT SHORT-CIRCUIT CURRENT vs. TEMPERATURE > IN- SHORTED TO = 5. = 2.7 MAX938 toc7 PUT SINK CURRENT (ma) PUT SHORT-CIRCUIT CURRENT vs. TEMPERATURE IN- > SHORTED TO = 5. = 2.7 MAX938 toc Maxim Integrated 6

7 Typical Operating Characteristics (continued) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = +25 C, unless otherwise noted.) MAX938 PUT SHORT-CIRCUIT CURRENT vs. TEMPERATURE PROPAGATION DELAY vs. CAPACITIE LOAD ( = 2.7) PROPAGATION DELAY vs. CAPACITIE LOAD ( = 5) SHORT-CIRCUIT TEMPERATURE (ma) = 2.7 = 5 MAX938 toc8a tpd (ns) OD = 5m t PD+ TO = 5% t PD- TO = 5% t PD+ TO = % t PD- TO = % MAX938 toc9 tpd (ns) OD = 5m t PD+ TO = 5% t PD+ TO = % t PD- TO = 5% t PD- TO = % MAX938 toc CAPACITIE LOAD (pf) CAPACITIE LOAD (pf) PROPAGATION DELAY vs. TEMPERATURE PROPAGATION DELAY vs. INPUT OERDRIE OD = 5m t PD+ TO = 5% MAX938 toca MAX938 tocb tpd (ns) t PD+ TO = % t PD- TO = 5% tpd (ns) t PD+, = 5. t PD+, = t PD- TO = % t PD-, = 5. t PD-, = INPUT OERDRIE (m) PROPAGATION DELAY (t PD+ ) PROPAGATION DELAY (t PD- ) MAX938 toc A MAX938 toc2 A B B A =, 5m/div B =, 2/div ns/div A =, 5m/div B =, 2/div ns/div Maxim Integrated 7

8 Typical Operating Characteristics (continued) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = +25 C, unless otherwise noted.) SWITCHING CURRENT ( RISING EDGE) SWITCHING CURRENT ( FALLING EDGE) POWER-UP DELAY () A MAX938 toc3 A MAX938 toc4 A MAX938 toc5 B B C B C A =, m/div B =, 5/div C = I CC, ma/div ns/div A =, m/div B =, 5/div C = I CC, ma/div ns/div A =, 2/div B =, /div 5ms/div A B C POWER-UP DELAY () MAX938 toc6 INPUT BIAS CURRENT (na).3.2. IN- = 2. INPUT BIAS CURRENT vs. INPUT OLTAGE I B+ I B- MAX938 tco7 µs/div A =, 2/div B =, /div C =, 5m/div, 2.48 OFFSET () PUT OLTAGE CHANGE (m) MAX94_/MAX95_ ERENCE PUT OLTAGE TEMPERATURE DRIFT THREE TYPICAL PARTS NORMALIZED TO +25 C MAX938 toc8 PUT OLTAGE CHANGE (m) - -2 MAX939 ERENCE PUT OLTAGE TEMPERATURE DRIFT THREE TYPICAL PARTS NORMALIZED TO +25 C MAX938 toc Maxim Integrated 8

9 Typical Operating Characteristics (continued) ( = 5, =, CM =, PU =.8, R PU = kω, I = A, I = A, T A = +25 C, unless otherwise noted.) ERENCE PUT OLTAGE CHANGE (m) LINE REGULATION T A = +25 C T A = -4 C T A = +85 C INPUT OLTAGE () MAX938 toc2 ERENCE PUT OLTAGE CHANGE (m) T A = +85 C T A = -4 C LOAD REGULATION T A = +25 C LOAD CURRENT (ma) MAX938 toc2 Pin Description PIN MAX938 MAX94 MAX94 MAX942 MAX943 MAX939 MAX95 MAX95 MAX952 MAX953 NAME FUNCTION UCSP SOT23 SOT23 SO SO/μMAX μmax A2 6 Comparator Output A Negative Supply oltage B Comparator Noninverting Input B Reference oltage Output A Positive Supply oltage B2 4 2 IN- Comparator Inverting Input 5, 8 9 N.C. No Connection. Not internally connected. A Comparator A Output 3 4 INA+ Comparator A Noninverting Input 5 6 INB+ Comparator B Noninverting Input 6 7 INB- Comparator B Inverting Input 7 8 B Comparator B Output 3 INA- Comparator A Inverting Input Maxim Integrated 9

10 Detailed Description The MAX938 MAX943 and feature single/dual, low-power, low-voltage comparators and a precision voltage reference. They operate from a single 2.5 to 5.5 (MAX93_/MAX94_) or 2.7 to 5.5 (MAX95_) supply. The single compa rators with reference, (MAX938/MAX939/MAX94/ MAX94/MAX95/MAX95 consume only 4μA of supply current, while the dual comparators with reference (MAX942/MAX943/MAX952/MAX953) consume only 55μA of supply current. Their common-mode input range extends.25 beyond each rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals. The output stage employs a unique design that minimizes supply current surges while switching, virtually eliminating the supply glitches typical of many other comparators. Large internal output drivers allow rail-to-rail output swing that can sink and source up to 8mA of current. The precision reference uses a proprietary curvaturecorrection circuit and laser-trimmed thin-film resistors, resulting in a temperature coefficient of less than 3ppm/ C over the extended temperature range and initial accuracy of.4% (A grade). The reference output voltage is set to.23 in the MAX938/MAX939, 2.48 in the MAX94 MAX943, and to 2.5 in the. Comparator Input Stage Circuitry The devices input common-mode range extends from ( -.25) to ( +.25). These comparators may operate at any differential input voltage within these limits. Input bias current is typically.pa 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, IN R2 R IN- MAX938 MAX943 these body diodes become forward biased and begin to conduct. Consequently, bias currents increase exponentially as the input voltage exceeds the supply rails. Comparator Output Stage Circuitry The comparators in these devices contain a unique output stage capable of rail-to-rail operation with loads up to 8mA. 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. Switching Frequency shows the minimal supply current increase as the output switching frequency approaches MHz. This characteristic reduces the need for power-supply filter capacitors to reduce glitches created by comparator switching currents. Another advantage realized in high-speed, batterypowered applications is a substantial increase in battery life. The MAX938 is an opendrain output comparator that can be used in logic-level translation or many other applications where voltage level translation is important. Applications Information Additional Hysteresis These comparators have ±3m internal hysteresis. Additional hysteresis can be generated with two resistors using positive feedback (Figure ). Use the following procedure to calculate resistor values: ) Calculate the trip points of the comparator using these formulas: ( ) CC R2 TH = + R + R2 R2 TL = R + R2 TH is the threshold voltage at which the comparator switches its output from high to low as IN rises above the trip point. TL is the threshold voltage at which the comparator switches its output from low to high as IN drops below the trip point. 2) The hysteresis band will be: 3) In this example, let = 5 and = 2.5: R2 HYS = TH TL = CC R + R2 Figure. Additional Hysteresis Maxim Integrated

11 IN and kω.µf R2 TH = + R + R2 R2 TL 2.5 = R + R2 4) Select R2. In this example, we will choose kω. 5) Select HYS. In this example, we will choose 5m. 6) Solve for R: IN- Figure 2. Time Averaging of the Input Signal for Data Recovery R2 HYS = CC R + R2.5 = 5 R + MAX938 MAX943 Board Layout and Bypassing Power-supply bypass capacitors are not typically needed, but would be called for in cases where supply impedance is high, supply leads are long, or excessive noise is expected on the supply lines. Use nf bypass capacitors under these conditions. Minimize signal trace lengths to reduce stray capacitance. Reference Output/Load Capacitance The MAX938/MAX939/MAX94_/MAX95_ do not require an output capacitor on for frequency stability. They are stable for capacitive loads up to 4.7nF. However, in applications where the load or the supply can experience step changes, an output capacitor will reduce the amount of overshoot (or undershoot) and assist the circuit s transient response. When an application is not subject to transient conditions, the capacitor can be omitted. Biasing for Data Recovery Digital data is often embedded into a bandwidth- and amplitude-limited analog path. Recovering the data can be difficult. Figure 2 compares the input signal to a timeaveraged version of itself. This self-biases the threshold to the average input voltage for optimal noise margin. Even severe phase distortion is eliminated from the digital output signal. Be sure to choose R and C so that: fcar >> 2 π RC where f CAR is the fundamental carrier frequency of the digital data stream. where R kω, TH = 2.525, and TL = Maxim Integrated

12 Functional Diagrams 2 A MAX942 MAX B INA+ INB- 6 3 MAX94 MAX INB+ 5 6 (A2) 4 (A) (B3) 2 A MAX943 MAX953 B 8 7 (A3) 3 4 INA- INA+ INB- 7 3 (B) MAX938 MAX939 MAX94 MAX95 IN- 2 (B2) 5 INB+ 6 ( ) MAX938/MAX939 UCSP BUMPS. Selector Guide PART COMPARATORS PER PACKAGE () MAX Uncommitted MAX Uncommitted MAX MAX Uncommitted MAX MAX Uncommitted IN- CONNECTIONS MAX /Uncommitted MAX Uncommitted/Uncommitted MAX /Uncommitted MAX Uncommitted/Uncommitted Maxim Integrated 2

13 Pin Configurations (continued) TOP IEW N.C. A 8 A 2 MAX94 MAX MAX94 MAX N.C. INA MAX942 MAX N.C. B INB- INB+ INA- INA MAX943 MAX IN- IN- B INB- INB+ SOT23 SO µmax/so µmax Ordering Information (continued) PART TEMP RANGE PIN- PACKAGE +Denotes lead(pb)-free/rohs-compliant package. TOP MARK MAX942AEUA -4 C to +85 C 8 µmax MAX942BEUA -4 C to +85 C 8 µmax MAX942AESA -4 C to +85 C 8 SO MAX942BESA -4 C to +85 C 8 SO MAX943AEUB -4 C to +85 C µmax MAX943BEUB -4 C to +85 C µmax MAX95AEUK+T -4 C to +85 C 5 SOT23 ADNW MAX95BEUK+T -4 C to +85 C 5 SOT23 ADNY MAX95AEUT+T -4 C to +85 C 6 SOT23 AAHG MAX95BEUT+T -4 C to +85 C 6 SOT23 AAHI MAX95AESA -4 C to +85 C 8 SO MAX95BESA -4 C to +85 C 8 SO MAX952AEUA -4 C to +85 C 8 µmax AAHG MAX952BEUA -4 C to +85 C 8 µmax AAHI MAX952AESA -4 C to +85 C 8 SO MAX952BESA -4 C to +85 C 8 SO MAX953AEUB -4 C to +85 C µmax MAX953BEUB -4 C to +85 C µmax Typical Operating Circuit IN IN- *MAX938 ONLY.23/2.48/ 2.5 Chip Information PROCESS: CMOS MAX938/MAX939 MAX94/MAX943 MAX95/MAX953.µF PU * R PU * Maxim Integrated 3

14 Package Information For the latest package outline information and land patterns (footprints), go to 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. PACKAGE TYPE PACKAGE CODE LINE NO. LAND PATTERN NO. 6 UCSP B SOT SOT SO FMAX FMAX Maxim Integrated 4

15 Revision History REISION NUMBER REISION DATE DESCRIPTION PAGES CHANGED /99 Initial release / Corrections to initial release 2 4/ Adding new part 3 4/ Increase in Max Supply Current specifications 4 /2 Adding UCSP package for MAX939 5 /7 Adding input current ratings in Absolute Maximum Ratings, style changes 6 3/9 7 3/3 Update Chip Information, Package Information, correct MAX953 part number, style changes Updated the General Description, Electrical Characteristics, and the Package Information, 2,, 2 9, 3-5, 3 8 9/3 Added the MAX938 and lead-free information to the data sheet. 5 9 /5 Added MAX939BEBT+T to Ordering Information /7 Removed MAX939BEBT+T from Ordering Information table For pricing, delivery, and ordering information, please contact Maxim Direct at , or visit Maxim Integrated s website at Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated 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 and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 27 Maxim Integrated Products, Inc. 5