MAX643 General Description The MAX643 precision voltage reference provides accurate preset +, +3.3V, +4.96V, +5.V, and +1V reference voltages from up to +4V input voltages. The MAX643 features a proprietary temperature coefficient curvature-correction circuit and lasertrimmed thin-film resistors that result in a very low temperature coefficient of 15ppm/ C (max) and excellent initial accuracy of.5% (max). Low temperature drift and low noise make the MAX643 ideal for use with high-resolution A/D or D/A converters. The MAX643 draws 32µA of supply current and sources 1mA or sinks.6ma of load current. The MAX643 uses bandgap technology for low-noise performance and excellent accuracy. The MAX643 does not require an output bypass capacitor for stability, and is stable with capacitive loads up to 1µF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications. The supply-independent, low supply current makes the MAX643 ideal for battery-operated, high-performance systems. The MAX643 is available in a 6-pin SOT23 package and operates over the automotive (-4 C to +125 C) temperature range. Applications Analog-to-Digital Converters Digital-to-Analog Converters Digital Voltmeters Voltage Regulators Threshold Detectors Features +, +3.3V, +4.96V, +5.V, or +1V Output Voltages Excellent Temperature Stability: 15ppm/ C (max) Tight Initial Accuracy:.5% (max) Tiny SOT23 Package Wide +4.5V to +4V Supply Voltage Range Low Noise: 4µV P-P (typ at Output) Short-Circuit Protected Wide Operating Temperature Range -4 C to +125 C Stable with Capacitive Loads from to 1µF No External Capacitors Required for Stability TOP VIEW I.C.* GND I.C.* *INTERNALLY CONNECTED. DO NOT CONNECT. 1 2 Pin Configuration + MAX643 3 4 SOT23 6 OUTS 5 OUTF Ordering Information IN PART OUTPUT VOLTAGE (V) TEMPCO (PPM/ C) INITIAL ACCURACY (%) MAX643AAUT25-T 2.5 15.6 ABRZ MAX643AAUT25#TG16 2.5 15.6 #ACMH MAX643BAUT25-T 2.5 2.1 ABDQ MAX643BAUT25#TG16 2.5 2.1 #ACMI MAX643CAUT25-T 2.5 65.5 ABDR MAX643CAUT25#TG16 2.5 65.5 #ACMJ MAX643AAUT33-T 3.3 15.6 ABSA MAX643AAUT33#TG16 3.3 15.6 #ACMK MAX643BAUT33-T 3.3 2.1 ABDS MAX643BAUT33#TG16 3.3 2.1 #ACML #Denotes an RoHS-compliant device that may include lead that is exempt under the RoHS requirements. T = Tape and reel. Ordering Information continued at end of data sheet. Typical Operating Circuit appears at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim s website at www.maximintegrated.com. TOP MARK 19-336; Rev 2; 8/12
MAX643 ABSOLUTE MAXIMUM RATINGS IN to GND...-.3V to +42V OUTF, OUTS to GND...-.3V to ( +.3V) Continuous Power Dissipation (T A = +7 C) 6-Pin SOT23 (derate 9.1mW/ C above +7 C)...727mW OUT_ Short-Circuit Duration...5s Operating Temperature Range...-4 C to +125 C Storage Temperature Range...-65 C to +15 C Junction Temperature Range...-65 C to +15 C Maximum Junction Temperature...+15 C Lead Temperature (soldering, 1s)...+3 C Soldering Temperature (reflow) RoHS-compliant package...+245 C Packages containing lead(pb)...+24 C 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 VOUT = + ( = +5V, =, T A = T MIN to T MAX. Typical values are at, unless otherwise noted.) (Note 1) OUTPUT Output Voltage PARAMETER CONDITIONS MIN TYP MAX UNITS =, MAX643A (.6%) 2.4985 2.5 2.515 MAX643B (.1%) 2.4975 2.5 2.525 MAX643C (.5%) 2.4876 2.5 2.5125 MAX643A_25 3 15 Output-Voltage Temperature Coefficient (Note 2) T A = -4 C to +125 C MAX643B_25 5 25 ppm/ C MAX643C_25 1 65 Line Regulation (Note 4) 4.5V < < 4V 1 6 T A = -4 C to +125 C 1.5 1 ppm/v Sourcing, 8 7 Load Regulation (Note 4) < < 1mA T A = -4 C to +125 C 7 Sinking, 7 9 ppm/ma -.6mA < < ma T A = -4 C to +125 C 9 OUT Short-Circuit Current Output shorted to GND 6 Output shorted to IN -2 ma Thermal Hysteresis (Note 3) 15 ppm Long-Term Stability t = 1hr 15 ppm DYNAMIC CHARACTERISTICS Output Noise Voltage.1Hz to 1Hz 4 µv P-P 1Hz to 1kHz 7 µv RMS Turn-On Settling Time To =.5% of final value, C OUT = 5pF 15 µs INPUT Supply Voltage Range Inferred from line regulation test 4.5 4. V Quiescent Supply Current = 32 49 T A = -4 C to +125 C 37 65 µa V 2 Maxim Integrated
MAX643 ELECTRICAL CHARACTERISTICS VOUT = +3.3V ( = +1V, =, T A = T MIN to T MAX. Typical values are at, unless otherwise noted.) (Note 1) OUTPUT Output Voltage PARAMETER CONDITIONS MIN TYP MAX UNITS =, MAX643A (.6%) 3.298 3.3 3.32 MAX643B (.1%) 3.2967 3.3 3.333 MAX643C (.5%) 3.2836 3.3 3.3165 MAX643A_33 3 15 Output-Voltage Temperature Coefficient (Note 2) T A = -4 C to +125 C MAX643B_33 5 25 ppm/ C MAX643C_33 1 65 Line Regulation (Note 4) 5.3V 4V 1 6 T A = -4 C to +125 C 1.5 1 ppm/v Sourcing, 23 7 Load Regulation (Note 4) 1mA T A = -4 C to +125 C 7 Sinking, 1 9 ppm/ma -.6mA ma T A = -4 C to +125 C 9 OUT Short-Circuit Current OUT shorted to GND 6 OUT shorted to IN -2 ma Thermal Hysteresis (Note 3) 15 ppm Long-Term Stability t = 1hr 15 ppm DYNAMIC CHARACTERISTICS Output Noise Voltage.1Hz to 1Hz 5.3 µv P-P 1Hz to 1kHz 9.5 µv RMS Turn-On Settling Time To =.5% of final value, C OUT = 5pF 18 µs INPUT Supply Voltage Range Inferred from line regulation test 5.3 4. V Quiescent Supply Current = 32 49 T A = -4 C to +125 C 38 65 µa V Maxim Integrated 3
MAX643 ELECTRICAL CHARACTERISTICS VOUT = +4.96V ( = +1V, =, T A = T MIN to T MAX. Typical values are at, unless otherwise noted.) (Note 1) OUTPUT Output Voltage PARAMETER CONDITIONS MIN TYP MAX UNITS =, MAX643A (.6%) 4.935 4.96 4.985 MAX643B (.1%) 4.919 4.96 4.11 MAX643C (.5%) 4.755 4.96 4.1165 MAX643A_41 3 15 Output-Voltage Temperature Coefficient (Note 2) T A = -4 C to +125 C MAX643B_41 5 25 ppm/ C MAX643C_41 1 65 Line Regulation (Note 4) 6.1V 4V 1 6 T A = -4 C to +125 C 1.5 1 ppm/v Sourcing, 19 7 Load Regulation (Note 4) 1mA T A = -4 C to +125 C 7 Sinking, 1 9 ppm/ma -.6mA ma T A = -4 C to +125 C 9 OUT Short-Circuit Current OUT shorted to GND 6 OUT shorted to IN -2 ma Thermal Hysteresis (Note 3) 15 ppm Long-Term Stability t = 1hr 15 ppm DYNAMIC CHARACTERISTICS Output Noise Voltage.1Hz to 1Hz 6.6 µv P-P 1Hz to 1kHz 12 µv RMS Turn-On Settling Time To =.5% of final value, C OUT = 5pF 2 µs INPUT Supply Voltage Range Inferred from line regulation test 6.1 4. V Quiescent Supply Current = 32 49 T A = -4 C to +125 C 38 65 µa V 4 Maxim Integrated
MAX643 ELECTRICAL CHARACTERISTICS VOUT = +5.V ( = +15V, =, T A = T MIN to T MAX. Typical values are at, unless otherwise noted.) (Note 1) OUTPUT Output Voltage PARAMETER CONDITIONS MIN TYP MAX UNITS =, MAX643A (.6%) 4.997 5. 5.3 MAX643B (.1%) 4.995 5. 5.5 MAX643C (.5%) 4.9751 5. 5.25 MAX643A_5 3 15 Output-Voltage Temperature Coefficient (Note 2) T A = -4 C to +125 C MAX643B_5 5 25 ppm/ C MAX643C_5 1 65 Line Regulation (Note 4) 7V 4V 1 6 T A = -4 C to +125 C 1.5 1 ppm/v Sourcing, 32 7 Load Regulation (Note 4) 1mA T A = -4 C to +125 C 7 Sinking, 13 9 ppm/ma -.6mA ma T A = -4 C to +125 C 9 OUT Short-Circuit Current OUT shorted to GND 6 OUT shorted to IN -2 ma Thermal Hysteresis (Note 3) 15 ppm Long-Term Stability t = 1hr 15 ppm DYNAMIC CHARACTERISTICS Output Noise Voltage.1Hz to 1Hz 9.5 µv P-P 1Hz to 1kHz 15 µv RMS Turn-On Settling Time To =.5% of final value, C OUT = 5pF 23 µs INPUT Supply Voltage Range Inferred from line regulation test 7. 4. V Quiescent Supply Current = 32 49 T A = -4 C to +125 C 38 65 µa V Maxim Integrated 5
MAX643 ELECTRICAL CHARACTERISTICS VOUT = +1.V ( = +15V, =, T A = T MIN to T MAX. Typical values are at, unless otherwise noted.) (Note 1) OUTPUT Output Voltage PARAMETER CONDITIONS MIN TYP MAX UNITS =, MAX643A (.5%) 9.995 1. 1.5 MAX643B (.1%) 9.99 1. 1.1 MAX643C (.5%) 9.95 1. 1.5 MAX643A_1 3 15 Output-Voltage Temperature T A = -4 C to +125 C MAX643B_1 5 25 Coefficient (Note 2) ppm/ C MAX643C_1 1 65 Line Regulation (Note 4) 12V 4V 1 6 T A = -4 C to +125 C 1.5 1 ppm/v Sourcing, 16 7 Load Regulation (Note 4) 1mA T A = -4 C to +125 C 7 Sinking, 17 9 ppm/ma -.6mA ma T A = -4 C to +125 C 9 OUT Short-Circuit Current OUT shorted to GND 6 OUT shorted to IN -2 ma Thermal Hysteresis (Note 3) 15 ppm Long-Term Stability t = 1hr 15 ppm DYNAMIC CHARACTERISTICS Output Noise Voltage.1Hz to 1Hz 19 µv P-P 1Hz to 1kHz 3 µv RMS Turn-On Settling Time To =.5% of final value, C OUT = 5pF 39 µs INPUT Supply Voltage Range Inferred from line regulation test 12. 4. V Quiescent Supply Current = 32 49 T A = -4 C to +125 C 39 65 µa Note 1: All devices are 1% production tested at and guaranteed by design over T A = T MIN to T MAX as specified. Note 2: Temperature coefficient is defined as divided by the temperature range. Note 3: Thermal hysteresis defined as the change in output voltage at before and after cycling the device from T MAX to T MIN. Note 4: Line and load regulation do not include the effect of self heating. V 6 Maxim Integrated
MAX643 Typical Operating Characteristics ( = +5V for = +, = +1V for = +3.3V or +4.96V, = +15V for = +5V or +1V, =,, unless otherwise noted.) OUTPUT VOLTAGE (V) 2.52 2.515 2.51 2.55 2.5 2.4995 2.499 2.4985 OUTPUT VOLTAGE vs. TEMPERATURE ( = ) THREE TYPICAL UNITS 2.498-4 -25-1 5 2 35 5 65 8 95 11 125 TEMPERATURE ( C) MAX643 toc1 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE vs. TEMPERATURE ( = 1V) 1.5 1.4 THREE TYPICAL UNITS 1.3 1.2 1.1 1. 9.999 9.998 9.997 9.996 9.995 9.994 9.993 9.992 9.991 9.99-4 -25-1 5 2 35 5 65 8 95 11 125 TEMPERATURE ( C) MAX643 toc2 VOUT (mv) 4 2-2 -4-6 -8-1 -12-14 LOAD REGULATION (SOURCING, = 1V) 1 2 3 4 5 6 7 OUTPUT CURRENT (ma) T A = -4 C MAX643 toc3 2. 1.5 1. LOAD REGULATION (SOURCING, = ) MAX643 toc4 25 2 15 LOAD REGULATION (SINKING, = 1V) T A = -4 C MAX643 toc5 2. 1.5 1. LOAD REGULATION (SINKING, = ) MAX643 toc6 VOUT (mv).5 -.5 T A = -4 C VOUT (mv) 1 5 VOUT (mv).5 -.5 T A = -4 C -1. -1.5-2. 1 2 3 4 5 6 7 OUTPUT CURRENT (ma) -5-1 -15-4 -3-2 -1 OUTPUT CURRENT (ma) -1. -1.5-2. -3. -2.5-2. -1.5-1. -.5 OUTPUT CURRENT (ma) VOUT (mv).175.15.125.1.75.5.25 -.25 LINE REGULATION ( = ) T A = -4 C MAX643 toc7 VOUT (mv).5.4.3.2.1 -.1 T A = -4 C LINE REGULATION ( = 1V) MAX643 toc8 MINIMUM INPUT-OUTPUT DIFFERENTIAL (V) 3. 2.5 2. 1.5 1..5 MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. LOAD CURRENT ( = ) / =.1% T A = -4 C MAX643 toc9 -.5 4 8 12 16 2 24 28 32 36 4 INPUT VOLTAGE (V) -.2 12 16 2 24 28 32 36 4 INPUT VOLTAGE (V) 2 4 6 8 LOAD CURRENT (ma) Maxim Integrated 7
MAX643 Typical Operating Characteristics (continued) ( = +5V for = +, = +1V for = +3.3V or +4.96V, = +15V for = +5V or +1V, =,, unless otherwise noted.) MINIMUM INPUT-OUTPUT DIFFERENTIAL (V) 3. 2.5 2. 1.5 1..5 MINIMUM INPUT-OUTPUT DIFFERENTIAL vs. LOAD CURRENT ( = 1V) / =.1% T A = -4 C MAX643 toc1 PSRR (db) -2-4 -6-8 -1 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY ( = ) MAX643 toc11 PSRR (db) -2-4 -6-8 -1 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY ( = 1V) MAX643 toc12 2 4 6 LOAD CURRENT (ma) -12.1 1 1 1 1 FREQUENCY (khz) -12.1 1 1 1 1 FREQUENCY (khz) OUTPUT IMPEDANCE (Ω) 1 1 1.1.1 OUTPUT IMPEDANCE vs. FREQUENCY.1 1 1 1 1 FREQUENCY (khz) MAX643 toc13 SUPPLY CURRENT (µa) 48 44 4 36 32 28 24 2 16 12 8 4 SUPPLY CURRENT vs. INPUT VOLTAGE ( = ) T A = -4 C 4 8 12 16 2 24 28 32 36 4 INPUT VOLTAGE (V) MAX643 toc14 SUPPLY CURRENT (µa) 44 4 36 32 28 24 2 16 12 8 4 SUPPLY CURRENT vs. INPUT VOLTAGE ( = 1V) T A = -4 C 4 8 12 16 2 24 28 32 36 4 INPUT VOLTAGE (V) MAX643 toc15 SUPPLY CURRENT (µa) 44 42 4 38 36 34 32 3 28 26 SUPPLY CURRENT vs. TEMPERATURE ( = ) = 5V MAX643 toc16 SUPPLY CURRENT (µa) 44 42 4 38 36 34 32 3 28 26 SUPPLY CURRENT vs. TEMPERATURE ( = 1V) = 15V MAX643 toc17 OUTPUT NOISE-VOLTAGE DENSITY (nv/ Hz) 1, 1 OUTPUT NOISE-VOLTAGE DENSITY vs. FREQUENCY = 1V = MAX643 toc18 24-4 -25-1 5 2 35 5 65 8 95 11 125 TEMPERATURE ( C) 24-4 -25-1 5 2 35 5 65 8 95 11 125 TEMPERATURE ( C) 1.1 1 1 1 1 FREQUENCY (Hz) 8 Maxim Integrated
MAX643 Typical Operating Characteristics (continued) ( = +5V for = +, = +1V for = +3.3V or +4.96V, = +15V for = +5V or +1V, =,, unless otherwise noted.).1hz TO 1Hz OUTPUT NOISE ( = ) MAX643 toc19.1hz TO 1Hz OUTPUT NOISE ( = 1V) MAX643 toc2 1µV/div 4µV/div 1s/div 1s/div = 5V C OUT = µf ( = ) MAX643 toc21 5mV/div 1V = 15V C OUT = µf ( = 1V) MAX643 toc22 2mV/div 2mA 1mA/div 2mA 1mA/div 1µs/div 1µs/div ( = ) MAX643 toc23 ( = 1V) MAX643 toc24 = 5V = 15V 5mV/div 1V 1mV/div 2mA 2mA 1mA/div 1mA/div 1µs/div 1µs/div Maxim Integrated 9
MAX643 Typical Operating Characteristics (continued) ( = +5V for = +, = +1V for = +3.3V or +4.96V, = +15V for = +5V or +1V, =,, unless otherwise noted.) ( = ) MAX643 toc25 ( = 1V) MAX643 toc26 = 5V C OUT = µf = 15V C OUT = µf 5mV/div 1V 1mV/div -2mA 2mA/div -2mA 2mA/div 2µs/div 4µs/div ( = ) MAX643 toc27 ( = 1V) MAX643 toc28 LINE TRANSIENT ( = ) MAX643 toc29 = 5V 2mV/div 1V = 15V 5mV/div 5.5V 5mV/div 4.5V -2mA 2mA/div -2mA 2mA/div 1mV/div 2µs/div 4µs/div 1µs/div LINE TRANSIENT ( = 1V) MAX643 toc3 TURN-ON TRANSIENT ( = ) MAX643 toc31 TURN-ON TRANSIENT ( = 1V) MAX643 toc32 15.5V 5mV/div 14.5V 5V C OUT = µf 2V/div 15V C OUT = µf 1mV/div V V 1V/div V 1V V 1µs/div 4µs/div 4µs/div 1 Maxim Integrated
MAX643 Typical Operating Characteristics (continued) ( = +5V for = +, = +1V for = +3.3V or +4.96V, = +15V for = +5V or +1V, =,, unless otherwise noted.) 5V TURN-ON TRANSIENT ( = ) MAX643 toc33 2V/div 15V TURN-ON TRANSIENT ( = 1V) MAX643 toc34 5V C OUT = µf TURN-OFF TRANSIENT ( = ) MAX643 toc35 2V/div V V 1V V V 1V/div V V 1V/div 4µs/div 4µs/div 1µs/div TURN-OFF TRANSIENT ( = 1V) MAX643 toc36 TURN-OFF TRANSIENT ( = ) MAX643 toc37 TURN-OFF TRANSIENT MAX643 toc38 15V C OUT = µf 5V 2V/div 15V V 1V V V 1V V V 1V/div V 2µs/div 2ms/div 4ms/div OUTPUT VOLTAGE (ppm) 15 125 1 75 5 25-25 -5-75 -1-125 LONG-TERM DRIFT ( = ) -15 2 4 6 8 1 TIME (hr) MAX643 toc39 OUTPUT VOLTAGE (ppm) 15 125 1 75 5 25-25 -5-75 -1-125 LONG-TERM DRIFT ( = 1V) -15 2 4 6 8 1 TIME (hr) XMAX643 toc4 Maxim Integrated 11
MAX643 PIN NAME FUNCTION 1, 3 I.C. Internally Connected. Do not connect externally. 2 GND Ground 4 IN Positive Power-Supply Input Pin Description 5 OUTF Voltage-Reference Force Output. Connect OUTF to OUTS as close to the device as possible. OUTF and OUTS do not require a bypass capacitor for stability. 6 OUTS Voltage-Reference Sense Input Applications Information Bypassing/Output Capacitance For the best line-transient performance, decouple the input with a.1µf ceramic capacitor as shown in the Typical Operating Circuit. Place the capacitor as close to IN as possible. When transient performance is less important, no capacitor is necessary. The MAX643 does not require an output capacitor for stability and is stable with capacitive loads up to 1µF. In applications where the load or the supply can experience step changes, a larger output capacitor reduces the amount of overshoot (undershoot) and improves the circuit s transient response. Place output capacitors as close to the device as possible for best performance. Supply Current The MAX643 consumes 32µA of quiescent supply current. This improved efficiency reduces power dissipation and extends battery life. Thermal Hysteresis Thermal hysteresis is the change in the output voltage at before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical thermal hysteresis value is 15ppm. Turn-On Time The MAX643 typically turns on and settles to within.5% of the preset output voltage in 15µs. Short-Circuited Outputs The MAX643 features a short-circuit-protected output. Internal circuitry limits the output current to 6mA when short-circuiting the output. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error In a data converter application, the reference voltage of the converter must stay within a certain limit to keep the error in the data converter smaller than the resolution limit through the operating temperature range. Figure 1 shows the maximum allowable reference-voltage temperature coefficient to keep the conversion error to less than 1 LSB, as a function of the operating temperature range (T MAX - T MIN ) with the converter resolution as a parameter. The graph assumes the reference-voltage temperature coefficient as the only parameter affecting accuracy. In reality, the absolute static accuracy of a data converter is dependent on the combination of many parameters such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage-reference changes. 12 Maxim Integrated
MAX643 1, 1 TEMPERATURE COEFFICIENT (ppm/ C) 1 1 1.1.1 8 BIT 1 BIT 12 BIT 14 BIT 16 BIT 18 BIT 2 BIT 1 1 1 OPERATING TEMPERATURE RANGE (T MAX - T MIN ) ( C) Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error Typical Operating Circuit INPUT SUPPLY IN OUTF OUTS REFERENCE OUTPUT (SEE ORDERING INFORMATION) MAX643.1µF* GND *INPUT CAPACITOR IS OPTIONAL. Maxim Integrated 13
MAX643 PART OUTPUT VOLTAGE (V) TEMPCO (PPM/ C) Ordering Information (continued) INITIAL ACCURACY (%) TOP MARK MAX643CAUT33#TG16 3.3 65.5 #ACMM MAX643AAUT41-T 4.96 15.6 ABSB MAX643AAUT41#TG16 4.96 15.6 #ACMN MAX643BAUT41-T 4.96 2.1 ABDU MAX643BAUT41#TG16 4.96 2.1 #ACMO MAX643CAUT41-T 4.96 65.5 ABDV MAX643CAUT41#TG16 4.96 65.5 #ACMP MAX643AAUT5-T 5. 15.6 ABSC MAX643AAUT5#TG16 5. 15.6 #ACMQ MAX643BAUT5-T 5. 2.1 ABDW MAX643BAUT5#TG16 5. 2.1 #ACMR MAX643CAUT5-T 5. 65.5 ABDX MAX643CAUT5#TG16 5. 65.5 #ACMS MAX643AAUT1-T 1. 15.6 ABSD MAX643AAUT1#TG16 1. 15.6 #ACMT MAX643BAUT1-T 1. 2.1 ABDY MAX643BAUT1#TG16 1. 2.1 #ACMU MAX643CAUT1-T 1. 65.5 ABDZ MAX643CAUT1#TG16 1. 65.5 #ACMV #Denotes an RoHS-compliant device that may include lead that is exempt under the RoHS requirements. T = Tape and reel. PROCESS: BiCMOS Chip Information Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. 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 OUTLINE NO. LAND PATTERN NO. 6 SOT23 U6FH-6 21-58 9-175 14 Maxim Integrated
MAX643 REVISION NUMBER REVISION DATE DESCRIPTION Revision History PAGES CHANGED 11/3 Initial release 1 5/4 2 8/12 Added future product information, updated the Electrical Characteristics and Typical Operating Characteristics. 1 6, 11, 12 Updated the Ordering Information/Selector Guide, Absolute Maximum Ratings, and the Package Information sections. 1, 14, 15 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 16 Rio Robles, San Jose, CA 95134 USA 1-48-61-1 15 212 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.