0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches MAX4626/MAX4627/ MAX4628. General Description. Benefits and Features. Ordering Information

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1 .5Ω, Low-Voltage, Single-Supply General Description The // are low-on-resistance, low-voltage, single-pole/single-throw (SPST) analog switches that operate from a +.8V to +5.5V single supply. The is normally open (), and the is normally closed (NC). The is normally open () and has two control inputs. These devices also have fast switching speeds (t = 5ns max, t = 3ns max). When powered from a +5V supply, the / / offer.5ω max on-resistance (R ) with.ω max R flatness, and their digital logic inputs are TTL compatible. These switches also feature overcurrent protection to prevent device damage from short circuits and excessive loads. The is pin compatible with the MAX5, and the is pin compatible with the MAX55. The / are available in SOT23-5 packages; the is available in a SOT23-6 package. Applications Power Routing Battery-Operated Equipment Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits PCMCIA Cards Cellular Phones Modems Hard Drives Benefits and Features Low R.5Ω max (+5V Supply).9Ω max (+3V Supply).Ω max R Flatness (+5V Supply) Overcurrent Protection Single-Supply Operation (+.8V to +5.5V) Available in SOT23 Packages Fast Switching: t = 5ns max, t = 3ns max TTL-Logic Compatible at +5V Pin Compatible with MAX5 () Pin Compatible with MAX55 () Ordering Information PART TEMP. RANGE P- PACKAGE TOP MARK EUK+T - C to +85 C 5 SOT23-5 +ADMJ EUK+T - C to +85 C 5 SOT23-5 +ADMK EUT+T - C to +85 C 6 SOT23-6 +AADN +Denotes lead(pb)-free/rohs-compliant package. T = Tape and reel. Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW NC SOT23-5 SOT23-5 SOT23-5 LOGIC SWITCH LOGIC SWITCH SWITCHES SHOWN FOR LOGIC O PUT. SWITCH 9-633; Rev ; 5/7

2 .5Ω, Low-Voltage, Single-Supply Absolute Maximum Ratings Voltages Referenced to,,...-.3v to +6V, NC, (Note )...-.3V to ( +.3V) Continuous Current, NC to...±ma Peak Switch Current, NC to (pulsed at ms, % duty cycle max)...±8ma Continuous Power Dissipation (T A = 7 C) 5-Pin SOT23-5 (derate 7.mW/ C above +7 C)...57mW 6-Pin SOT23-6 (derate 7.mW/ C above +7 C)...57mW Operating Temperature Range MAX62_EU_... - C to +85 C Junction Temperature...+5 C Storage Temperature Range C to +5 C Lead Temperature (soldering, s)...+3 C Note : Signals on NC,, or exceeding or are clamped by internal diodes. 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 Single +5V Supply ( = +5V ±%, =, V H = 2.V, V L =.8V, T A = T M to T MAX, unless otherwise noted.) (Notes 2, 3) PARAMETER SYMBOL CDITIS M TYP MAX UNITS ANALOG SWITCH Analog Signal Range V, V, V NC V On-Resistance R =.5V, V or V NC = 3.5V, I = ma On-Resistance Flatness (Note ) or NC Off-Leakage Current Off-Leakage Current On-Leakage Change Overcurrent-Protection Threshold Current DYNAMIC R FLAT() =.5V; V =, V, 2V; I = ma I (), I NC(), I () I () = 5.5V; V = V,.5V; V or V NC =.5V, V = 5.5V; V = V,.5V; V or V NC =.5V, V = 5.5V; V = V,.5V; V or V NC = V,.5V, or floating Turn-On Time t V or V NC = 3V, Figure 2 Turn-Off Time t V or V NC = 3V, Figure 2 T A = +25 C.35.5 T A = T M to T MAX.6 T A = +25 C.5. T A = T M to T MAX. T A = +25 C T A = T M to T MAX -2 2 T A = +25 C T A = T M to T MAX -2 2 T A = +25 C -.3 T A = T M to T MAX - T A = +25 C 2. A T A = +25 C 5 T A = T M to T MAX 6 T A = +25 C 8 3 T A = T M to T MAX Charge Injection Q C L =.nf, V GEN =, R GEN =, T A = +25 C, Figure 3 pc Off-Isolation (Note 5) OIRR R L = 5Ω, C L = 5pF, f = MHz, T A = +25 C, Figure -5 db Off-Capacitance C () f = MHz, T A = +25 C, Figure 5 65 pf NC or Off- Capacitance C f = MHz, T A = +25 C, Figure 5 65 pf On-Capacitance C () f = MHz, T A = +25 C, Figure 5 3 pf Ω Ω na na na ns ns Maxim Integrated 2

3 .5Ω, Low-Voltage, Single-Supply Electrical Characteristics Single +5V Supply (continued) ( = +5V ±%, =, V H = 2.V, V L =.8V, T A = T M to T MAX, unless otherwise noted.) (Notes 2, 3) PARAMETER SYMBOL CDITIS M TYP MAX UNITS LOGIC PUT Input Voltage Low V L.8 V Input Voltage High V H 2. V Logic Input Current I - µa SUPPLY Power-Supply Range V Positive Supply Current I+ = 5.5V, V = or µa Electrical Characteristics Single +3V Supply ( = +2.7V to +3.6V, =, V H = 2.V, V L =.6V, T A = T M to T MAX, unless otherwise noted.) (Notes 2, 3) PARAMETER SYMBOL CDITIS M TYP MAX UNITS ANALOG SWITCH Analog Signal Range V, V, V NC V On-Resistance R = 2.7V, V or V NC =.5V, I = ma On-Resistance Flatness (Note ) DYNAMIC R FLAT() = 2.7V; I = ma; V or V NC =,.75V,.5V; T A = +25 C Turn-On Time t V or V NC =.5V, Figure 2 Turn-Off Time t V or V NC =.5V, Figure 2 Charge Injection LOGIC PUT Q C L =.nf, Figure 3, V GEN =, R GEN =, T A = +25 C T A = +25 C..8 T A = T M to T MAX.9 Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. Note 3: SOT-packaged parts are % tested at +25 C. Limits across the full temperature range are guaranteed by design and correlation. Note : Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the specified analog signal range. Note 5: Off-Isolation = 2log [V / (V NC or V )], V = output, V NC or V = input to off switch. Ω. Ω T A = +25 C 65 8 T A = T M to T MAX 9 T A = +25 C 22 T A = T M to T MAX 5 ns ns 3 pc Input Voltage Low V L.6 V Input Voltage High V H 2. V Logic Input Current I - µa SUPPLY Positive Supply Current I+ V = +3.6V, V = µa Maxim Integrated 3

4 .5Ω, Low-Voltage, Single-Supply Typical Operating Characteristics (T A = +25 C, unless otherwise noted.) RESISTANCE vs. VOLTAGE OVER SUPPLY VOLTAGE V CC = +.8V I = ma -28toc.6.5 -RESISTANCE vs. VOLTAGE OVER TEMPERATURE = 5V I = ma T A = +5 C -28toc2 6 5 TURN-/ TIMES vs. SUPPLY VOLTAGE -28toc3 R(Ω) 2..5 V CC = +2.V R(Ω)..3 T A = +85 C T A = +25 C T A = - C t/t (ns) 3 t..5 V CC = +2.3V V CC = +2.5V V CC = +3.V.2. T A = -55 C 2 V CC = +5V V (V) V (V) t V SUPPLY (V) t/t (ns) TURN-/ TIMES vs. TEMPERATURE t -28toc /-LEAKAGE (na).. /-LEAKAGE CURRENT vs. TEMPERATURE -28toc5 Q (pc) CHARGE JECTI vs. VOLTAGE -28toc6 t TEMPERATURE ( C) LOSS (db) k k FREQUENCY RESPSE -28toc7 -PHASE -ISOLATI -LOSS M M FEQUENCY (Hz) = 5V 5Ω = /OUT TEMPERATURE ( C) M PHASE (degrees) LOGIC THRESHOLD VOLTAGE (V) V (V) LOGIC THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE V RISG V FALLG SUPPLY VOLTAGE (V) -28toc8 Maxim Integrated

5 .5Ω, Low-Voltage, Single-Supply Typical Operating Characteristics (continued) (T A = +25 C, unless otherwise noted.). TOTAL HARMIC DISTORTI vs. FREQUENCY -28toc9 3V OVERCURRENT RESPSE -28toc V 2V/div THD (%). 3A I A/div. k k k FREQUENCY (Hz) 5µs/div Pin Description P NAME FUNCTI Analog Switch Common 2 2 Analog Switch Normally Open Ground 5 Digital Control Input Positive Supply Input 2 NC Analog Switch Normally Closed Inverted Digital Control Input (see Truth Table) Maxim Integrated 5

6 .5Ω, Low-Voltage, Single-Supply Detailed Description The // are low-on-resistance (R ), low-voltage, single-pole/single-throw (SPST) analog switches that operate from a +.8V to +5.5V single supply. The is normally open (), and the is normally closed (NC). The is normally open () and has two control inputs. When powered from a +5V supply, their.5ω R allows high continuous currents to be switched in a variety of applications. In the event of an overcurrent condition, these switches provide both current-limit and thermalshutdown protection. Current-Limit Protection The // feature current-limit protection circuitry. When the voltage drop across the on switch reaches.6v (typ), the internal circuitry activates. The current limit is not instantaneous, but rather integrates over time so that current limiting will not activate under momentary short-circuit conditions encountered when the switch output charges a small.μf capacitor. For sustained overcurrent conditions, the switch turns off (opens). The switch turns on after 5ms and, if the overload condition persists, the switch will cycle off and on to produce a pulsed output. A direct short circuit will be detected immediately, and the switch will pulse on for μs, then remain off for 5ms. V g POSITIVE SUPPLY D D2 Applications Information Logic Inputs The // logic inputs can be driven up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply, or may be driven low to V and high to 5.5V. Driving or Rail-to-Rail minimizes power consumption. Analog Signal Levels Analog signals that range over the entire supply voltage ( to ) can be passed with very little change in onresistance (see Typical Operating Characteristics). The switches are bidirectional, so the, NC, and pins can be used as either inputs or outputs. Power-Supply Sequencing and Overvoltage Protection Caution: Do not exceed the absolute maximum ratings; stresses beyond the listed ratings may cause permanent damage to the devices. Proper power-supply sequencing is recommended for all CMOS devices. Always apply before applying analog signals, especially if the analog signal is not current limited. If this sequencing is not possible, and if the analog inputs are not current limited to <2mA, add a small-signal diode (D) as shown in Figure. If the analog signal can dip below, add D2. Adding protection diodes reduces the analog range to a diode drop (about.7v) below (for D), and a diode drop above ground (for D2). On-resistance increases by a small amount at low supply voltages. Maximum supply voltage () must not exceed +6V. Adding protection diode D2 causes the logic thresholds to be shifted relative to. TTL compatibility is not guaranteed when protection diode D2 is added. Protection diodes D and D2 also protect against some overvoltage situations. With Figure s circuit, if the supply voltage is below the absolute maximum rating, and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result. Figure. Overvoltage Protection Using Two External Blocking Diodes Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Maxim Integrated 6

7 .5Ω, Low-Voltage, Single-Supply Test Circuits/Timing Diagrams V N_ OR NC R L 5Ω C L 35pF V H LOGIC PUT V L 5% t t r < 5ns t f < 5ns.9.9 SWITCH OUTPUT V t Figure 2. Switching Time C L CLUDES FIXTURE AND STRAY CAPACITANCE. R V L OUT = V N_ ( R L + R ) LOGIC PUT WAVEFORMS VERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. V GEN R GEN OR NC C L V H V L to V H Q = ( )(C L ) DEPENDS SWITCH CFIGURATI; PUT POLARITY DETERMED BY SENSE OF SWITCH. Figure 3. Charge Injection +5V nf V OR V 5Ω USE LY FOR ISOLATI MEAS 5Ω NETWORK ANALYZER 5Ω REF -ISOLATI = 2log V -LOSS = 2log V 5Ω 5Ω MEASUREMENTS ARE STANDARDIZED AGAST SHORTS AT IC TERMALS. -ISOLATI IS MEASURED BETWEEN _ AND _ OR NC_ TERMAL EACH SWITCH. -LOSS IS MEASURED BETWEEN _ AND _ OR NC_ TERMAL EACH SWITCH. SIGNAL DIRECTI THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure. On-Loss and Off-Isolation Maxim Integrated 7

8 .5Ω, Low-Voltage, Single-Supply nf Chip Information TRANSISTOR COUNT: 86 CAPACITANCE METER f = MHz NC or V L OR V H Figure 5. Channel Off/On-Capacitance 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. Maxim Integrated 8

9 .5Ω, Low-Voltage, Single-Supply Revision History REVISI NUMBER REVISI DATE / Initial Release DESCRIPTI PAGES CHANGED 5/7 Updated package information to indicate lead-free 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. 9