19-0347; Rev 1; 10/97 Precision, Single-Supply, SPST Analog Switches ____________________________Features ♦ Low On-Resistance (RON), 60Ω max (33Ω typ) ♦ RON Matching Between Channels <2Ω ♦ RON Flatness <6Ω Max ♦ Guaranteed Charge Injection <5pC ♦ Single-Supply Operation (+2.7V to +16V) ________________________Applications MAX323CSA 0°C to +70°C 8 SO MAX323C/D 0°C to +70°C Dice* MAX323EPA -40°C to +85°C 8 Plastic DIP MAX323ESA -40°C to +85°C 8 SO MAX323EJA -40°C to +85°C 8 CERDIP** MAX323MJA -55°C to +125°C 8 CERDIP** Ordering Information continued at end of data sheet. * Contact factory for dice specifications. ** Contact factory for availability. Battery-Operated Systems Sample-and-Hold Circuits Heads-Up Displays Guidance and Control Systems Audio and Video Switching Military Radios Test Equipment Communications Systems +3V, +5V DACs and ADCs PBX, PABX ♦ Low Power Consumption, <5µW ♦ Low Leakage Current Over Temperature, <2.5nA at +85°C ♦ Fast Switching: tON <150ns, tOFF <100ns ♦ Guaranteed Break-Before-Make (MAX325 only) ♦ TTL/CMOS Logic Compatible ______________Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX323CPA 0°C to +70°C 8 Plastic DIP MAX323CUA 0°C to +70°C 8 µMAX _____________________Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW MAX323 MAX324 NO1 1 8 COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 V+ NO2 MAX325 NC1 1 8 COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 DIP/SO/µMAX DIP/SO/µMAX MAX323 LOGIC SWITCH MAX324 LOGIC SWITCH 0 1 OFF ON 0 1 V+ NC2 ON OFF NO1 1 8 V+ COM1 2 7 IN1 IN2 3 6 COM2 V- 4 5 NC2 DIP/SO/µMAX LOGIC MAX325 SWITCH 1 SWITCH 2 0 1 OFF ON ON OFF SWITCHES SHOWN FOR LOGIC "0" INPUT ________________________________________________________________ Maxim Integrated Products 1 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. MAX323/MAX324/MAX325 _______________General Description The MAX323/MAX324/MAX325 are precision, dual, SPST analog switches. They are single-supply devices designed to operate from +2.7V to +16V. The MAX323 has two normally open (NO) switches, and the MAX324 has two normally closed (NC) switches. The MAX325 has one NO and one NC switch. Low power consumption (5µW) makes these parts ideal for battery-powered equipment. These switches offer low leakage currents (100pA max) and fast switching speeds (tON = 150ns max, tOFF = 100ns max). When powered from a 5V supply, the MAX323 series offers 2Ω max matching between channels, 60Ω max on-resistance, and 6Ω max RON flatness. These switches also offer 5pC max charge injection, and a minimum of 2000V ESD per Method 3015.7. For equivalent devices specified for dual-supply operation, see the MAX320/MAX321/MAX322 data sheet. For quad versions of the MAX320 series, see MAX391/ MAX392/MAX393 data sheet. MAX323/MAX324/MAX325 Precision, Single-Supply, SPST Analog Switches ABSOLUTE MAXIMUM RATINGS Voltage Referenced to GND V+ .........................................................................-0.3V to +17V IN_, COM_, NC_, NO_ (Note 1)..................-0.3V to (V+ + 0.3V) Continuous Current (any terminal) ......................................30mA Peak Current, COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle max) ............................100mA ESD per Method 3015.7 ..................................................>2000V Continuous Power Dissipation Plastic DIP (derate 9.09mW/°C above +70°C) ..............727mW Narrow SO (derate 5.88mW/°C above +70°C) ..............471mW CERDIP (derate 8.00mW/°C above +70°C) ...................640mW µMAX (derate 4.10mW/°C above +70°C) ......................330mW Operating Temperature Ranges MAX32_C_ _ .........................................................0°C to +70°C MAX32_E_ _.......................................................-40°C to +85°C MAX32_MJA ....................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C Note 1: Signals on NC, NO, COM, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current rating. 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 (V+ = 5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL MIN CONDITIONS TYP (Note 2) MAX UNITS ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Notes 3, 5) NO or NC Off Leakage Current (Note 6) VCOM, VNO, VNC (Note 3) V+ = 4.5V, ICOM = 1.0mA, VNO or VNC = 3.5V V+ = 5V, ∆RON ICOM = 1.0mA, VNO or VNC = 3V V+ = 5V, RFLAT(ON) ICOM = 1.0mA, VNO or VNC = 1V, 2V, 3V RON INO(OFF) or INC(OFF) V+ = 5.5V, VCOM = 1V, VNO or VNC = 4.5V COM Off Leakage Current (Note 6) V+ = 5.5V, ICOM(OFF) VCOM = 4.5V, VNO or VNC = 1V COM On Leakage Current (Note 6) ICOM(ON) 2 V+ = 5.5V, VCOM = 5V, or VNO or VNC = 5V 0 TA = +25°C V+ 33 TA = TMIN to TMAX TA = +25°C 0.8 TA = TMIN to TMAX 2 TA = TMIN to TMAX TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX C, E M TA = +25°C TA = TMIN to TMAX C, E M 6 8 -0.1 C, E M 2 4 TA = +25°C TA = +25°C 60 75 0.01 Ω Ω Ω 0.1 -5 -40 5 40 -0.1 0.1 -5 -40 5 40 -0.2 0.2 -10 -50 10 50 _______________________________________________________________________________________ V nA nA nA Precision, Single-Supply, SPST Analog Switches MAX323/MAX324/MAX325 ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued) (V+ = 5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX 85 150 UNITS DYNAMIC Turn-On Time tON VNO or VNC = 3V Turn-Off Time tOFF VNO or VNC = 3V Break-Before-Make Time Delay (Note 3) Charge Injection (Note 3) tD TA = TMIN to TMAX TA = +25°C 25 TA = TMIN to TMAX MAX325 only, RL = 300Ω, CL = 35pF CL = 1.0nF, VGEN = 0V, RGEN = 0V, Figure 4 RL = 50Ω, CL = 5pF, f = 1MHz, Figure 5 RL = 50Ω, CL = 5pF, f = 1MHz, Figure 6 240 100 150 2 ns ns ns TA = +25°C 1 TA = +25°C 72 dB TA = +25°C 85 dB f = 1MHz, Figure 7 TA = +25°C 9 pF COM Off Capacitance CCOM(OFF) f = 1MHz, Figure 7 TA = +25°C 9 pF COM On Capacitance CCOM(ON) TA = +25°C 22 pF Off Isolation (Note 7) Q TA = +25°C OIRR Crosstalk (Note 8) NC or NO Capacitance COFF f = 1MHz, Figure 8 5 pC SUPPLY Power-Supply Range Positive Supply Current 2.7 I+ V+ = 5.5V, VIN = 0V or V+, all channels on or off -1 0.0001 16 V 1 µA 0.8 V LOGIC INPUT Input Voltage Low VINL Input Voltage High VINH 2.4 V _______________________________________________________________________________________ 3 MAX323/MAX324/MAX325 Precision, Single-Supply, SPST Analog Switches ELECTRICAL CHARACTERISTICS—Single +3.3V Supply (V+ = 3.0V to 3.6V, GND = 0V, VINH = 2.4V, VINL = 0.6V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS ANALOG SWITCH Analog Signal Range VCOM, VNO, VNC (Note 3) RON V+ = 3V, ICOM = 1.0mA, VNO or VNC = 1.5V Turn-On Time (Note 3) tON VNO or VNC = 1.5V Turn-Off Time (Note 3) tOFF VNO or VNC = 1.5V Channel On-Resistance 0 TA = +25°C V+ 83 TA = TMIN to TMAX 175 275 V Ω DYNAMIC Break-Before-Make Time Delay (Note 3) tD Charge Injection (Note 3) Q MAX325 only, RL = 300Ω, CL = 35pF CL = 1.0nF, VGEN = 0V, RGEN = 0V TA = +25°C 160 TA = TMIN to TMAX 500 TA = +25°C 40 TA = TMIN to TMAX TA = +25°C 400 125 175 2 TA = +25°C 5 1 ns ns ns 5 pC 1 µA SUPPLY Positive Supply Current Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8: 4 I+ V+ = 3.6V, VIN = 0V or V+, all channels on or off -1 The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. Guaranteed by design. ∆RON = ∆RON max - ∆RON min. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range. Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25°C. Off Isolation = 20 log10 [ VCOM ⁄ (VNC or VNO) ], VCOM = output, VNC or VNO = input to off switch. Between any two switches. _______________________________________________________________________________________ Precision, Single-Supply, SPST Analog Switches V+ = 5V 50 D 40 RON (Ω) 50 40 B 30 C ∆RON (Ω) A 30 B TA = -55°C TA = +25°C TA = +85°C TA = +125°C 0.6 D 0.4 20 A: B: C: D: A 10 C 10 0 0 2 4 8 6 10 12 0 1 2 VCOM (V) 4 0 5 OFF LEAKAGE CURRENT vs. TEMPERATURE MAX323-04 1 0.1 0.01 0.001 0.0001 V+ = 5.5V VCOM = 1V VNC OR VNO = 1V 45 65 4 5 V+ = 5V 1 0.1 0 0.01 -1 0.001 -2 -3 -55 -35 -15 TEMPERATURE (°C) 3 CHARGE INJECTION vs. VCOM 1 85 105 125 2 2 0.0001 25 1 3 Q (pC) OFF LEAKAGE (nA) 10 5 B 0 VCOM (V) 100 10 5 25 45 65 85 105 125 TEMPERATURE (°C) 0 1 2 3 4 5 VCOM (V) SUPPLY CURRENT vs. TEMPERATURE 10 9 V+ = 5V IN1, IN2 = GND OR V+ 8 7 I+ (nA) -55 -35 -15 C A VCOM (V) ON LEAKAGE CURRENT vs. TEMPERATURE 100 3 0.2 MAX323-05 0 TA = -55°C TA = +25°C TA = +85°C TA = +125°C MAX323-06 20 MAX323-07 RON (Ω) A: B: C: D: 0.8 60 ON LEAKAGE (nA) 1 MAX323-02 MAX323-01 A: V+ = 3V B: V+ = 5V C: V+ = 12V 70 ∆RON vs. VCOM OVER TEMPERATURE RON vs. VCOM OVER TEMPERATURE 60 MAX323-03 RON vs. VCOM 80 6 5 4 3 2 1 0 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE (°C) _______________________________________________________________________________________ 5 MAX323/MAX324/MAX325 __________________________________________Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) MAX323/MAX324/MAX325 Precision, Single-Supply, SPST Analog Switches _____________________Pin Description PIN NAME FUNCTION NO1 Normally Open Analog Switch Terminal (MAX323/MAX325) NC1 Normally Closed Analog Switch Terminal (MAX324 only) POSITIVE SUPPLY D1 V+ 1 2, 6 COM1, COM2 Analog Switch Common Terminal 3, 7 IN2, IN1 Logic Inputs 4 GND Ground NO2 Normally Open Analog Switch Terminal (MAX323 only) NC2 Normally Closed Analog Switch Terminal (MAX324/MAX325) NO COM Vg GND D2 5 8 V+ Figure 1. Overvoltage Protection Using Two External Blocking Diodes Positive Supply __________Applications Information Logic Levels The MAX323/MAX324/MAX325 are TTL compatible when powered from a single +5V supply. When powered from other supply voltages, TTL compatibility is not guaranteed, and the logic inputs should be driven from rail to rail. For example, with a 15V supply, IN1 and IN2 should be driven low to 0V and high to 15V. Similarly, with a 3.3V supply, IN1 and IN2 should be driven low to 0V and high to 3.3V Driving IN1 and IN2 rail-to-rail minimizes power consumption. Analog Signal Levels Analog signals that range over the entire supply voltage (V+ to GND) can be switched with very little change in on-resistance over the entire voltage range (see Typical Operating Characteristics). All the switches are bidirectional, so NO_, NC_, and COM_ pins can be used as either inputs or outputs. Power-Supply Sequencing and Overvoltage Protection Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings may cause permanent damage to the devices. Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals or logic inputs, especially if the analog 6 or logic signals are not current-limited. If this sequencing is not possible, and if the analog or logic inputs are not current-limited to <30mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D2. Adding protection diodes reduces the analog signal range to a diode-drop (about 0.7V) below V+ (for D1), and to a diode-drop above ground (for D2). Leakage is unaffected by adding the diodes. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V+) must not exceed 17V. Adding protection diodes causes the logic thresholds to be shifted relative to the power-supply rails. This can be significant when low supply voltages (5V or less) are used. With a 5V supply, TTL compatibility is not guaranteed when protection diodes are added. Driving IN1 and IN2 all the way to the supply rails (i.e. to a diodedrop higher than the V+ pin, or to a diode-drop lower than the GND pin) is always acceptable. Protection diodes D1 and D2 also protect against some overvoltage situations. With Figure 1’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. For example, with a +5V supply, analog signals up to ±8V will not damage the circuit of Figure 1. If only a single fault signal is present, the fault voltage can rise to +17V or to -12V without damage occurring. _______________________________________________________________________________________ Precision, Single-Supply, SPST Analog Switches MAX323 MAX324 MAX325 SWITCH INPUT +5V V+ NO or NC COM V COM LOGIC INPUT SWITCH OUTPUT t r < 20ns t f < 20ns +3V 50% 0V VOUT RL 1kΩ CL 35pF t OFF IN VOUT GND LOGIC INPUT SWITCH OUTPUT 0V 0.9 x VOUT t ON 0V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VCOM RL + RON ( 0.9 x V0UT LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. ) Figure 2. Switching Time +5V MAX325 VCOM1 = +3V VCOM2 = +3V V+ COM1 VOUT1 NO1 VOUT2 NC2 COM2 RL2 300Ω IN LOGIC INPUT LOGIC INPUT RL1 300Ω +3V 50% 0V CL1 35pF CL2 35pF SWITCH OUTPUT 1 (VOUT1) 0.9 x V0UT1 0V SWITCH OUTPUT 2 (VOUT2) GND 0.9 x VOUT2 0V tD tD CL INCLUDES FIXTURE AND STRAY CAPACITANCE. Figure 3. Break-Before-Make Interval (MAX325 only) +5V MAX323 MAX324 MAX325 ∆VOUT V+ RGEN COM VOUT NC or NO VOUT IN OFF CL V GEN GND ON OFF IN VIN = +3V IN OFF ON OFF Q = (∆V OUT )(C L ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 4. Charge Injection _______________________________________________________________________________________ 7 MAX323/MAX324/MAX325 ______________________________________________Test Circuits/Timing Diagrams MAX323/MAX324/MAX325 Precision, Single-Supply, SPST Analog Switches _________________________________Test Circuits/Timing Diagrams (continued) SIGNAL GENERATOR 0dBm MAX323 MAX324 MAX325 +5V 10nF COM SIGNAL GENERATOR 0dBm V+ 0V or 2.4V IN ANALYZER GND IN2 N02 COM2 0V or 2.4V NC Figure 6. Crosstalk +5V 10nF MAX323 MAX324 MAX325 V+ 10nF GND Figure 7. Channel-Off Capacitance MAX323 MAX324 MAX325 COM IN NC or NO +5V V+ COM 8 IN1 50Ω RL Figure 5. Off Isolation f = 1MHz N01 GND RL CAPACITANCE METER V+ COM1 0V or 2.4V NC COM or NO ANALYZER MAX323 MAX324 MAX325 10nF +5V 0V or 2.4V CAPACITANCE METER IN f = 1MHz NC or NO GND Figure 8. Channel-On Capacitance _______________________________________________________________________________________ 0V or 2.4V Precision, Single-Supply, SPST Analog Switches PART MAX324CPA MAX324CUA MAX324CSA MAX324C/D MAX324EPA MAX324ESA MAX324EJA MAX324MJA MAX325CPA MAX325CUA MAX325CSA MAX325C/D MAX325EPA MAX325ESA MAX325EJA MAX325MJA TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C * Contact factory for dice specifications. ** Contact factory for availability. ___________________Chip Topography PIN-PACKAGE 8 Plastic DIP 8 µMAX 8 SO Dice* 8 Plastic DIP 8 SO 8 CERDIP** 8 CERDIP** 8 Plastic DIP 8 µMAX 8 SO Dice* 8 Plastic DIP 8 SO 8 CERDIP** 8 CERDIP** NO/NC V+ COM1 IN1 0.075" (1.90mm) IN2 COM2 NO/NC V- 0.055" (1.40mm) TRANSISTOR COUNT: 91 SUBSTRATE IS CONNECTED TO V+ _______________________________________________________________________________________ 9 MAX323/MAX324/MAX325 __Ordering Information (continued) MAX323/MAX324/MAX325 Precision, Single-Supply, SPST Analog Switches ________________________________________________________Package Information DIM C α A 0.101mm 0.004 in e B A1 L E A A1 B C D E e H L α INCHES MAX MIN 0.044 0.036 0.008 0.004 0.014 0.010 0.007 0.005 0.120 0.116 0.120 0.116 0.0256 0.198 0.188 0.026 0.016 6° 0° MILLIMETERS MIN MAX 0.91 1.11 0.10 0.20 0.25 0.36 0.13 0.18 2.95 3.05 2.95 3.05 0.65 4.78 5.03 0.41 0.66 0° 6° INCHES MAX MIN 0.200 – – 0.015 0.175 0.125 0.080 0.055 0.022 0.016 0.065 0.045 0.012 0.008 0.080 0.005 0.325 0.300 0.310 0.240 – 0.100 – 0.300 0.400 – 0.150 0.115 MILLIMETERS MIN MAX – 5.08 0.38 – 3.18 4.45 1.40 2.03 0.41 0.56 1.14 1.65 0.20 0.30 0.13 2.03 7.62 8.26 6.10 7.87 2.54 – 7.62 – – 10.16 2.92 3.81 H 8-PIN µMAX MICROMAX SMALL OUTLINE PACKAGE D D E DIM E1 A A1 A2 A3 B B1 C D1 E E1 e eA eB L A3 A A2 L A1 0° - 15° C e B1 B eA eB D1 Plastic DIP PLASTIC DUAL-IN-LINE PACKAGE (0.300 in.) 10 DIM PINS D D D D D D 8 14 16 18 20 24 INCHES MIN MAX 0.348 0.390 0.735 0.765 0.745 0.765 0.885 0.915 1.015 1.045 1.14 1.265 ______________________________________________________________________________________ MILLIMETERS MIN MAX 8.84 9.91 18.67 19.43 18.92 19.43 22.48 23.24 25.78 26.54 28.96 32.13 Precision, Single-Supply, SPST Analog Switches DIM D 0°-8° A 0.101mm 0.004in. e B A1 E C H L SO SMALL OUTLINE PACKAGE (0.150 in.) A A1 B C E e H L INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.157 0.150 0.050 0.244 0.228 0.050 0.016 DIM PINS D D D 8 14 16 MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 3.80 4.00 1.27 5.80 6.20 0.40 1.27 INCHES MILLIMETERS MIN MAX MIN MAX 0.189 0.197 4.80 5.00 0.337 0.344 8.55 8.75 0.386 0.394 9.80 10.00 21-0041A ______________________________________________________________________________________ 11 MAX323/MAX324/MAX325 ___________________________________________Package Information (continued) MAX323/MAX324/MAX325 Precision, Single-Supply, SPST Analog Switches ___________________________________________Package Information (continued) DIM D E A Q B2 e 0°-15° L C eA A B B2 C E eA e L Q S1 INCHES MAX MIN 0.225 – 0.023 0.014 0.065 0.038 0.015 0.008 0.310 0.220 0.320 0.290 0.100 0.200 0.125 0.070 0.015 – 0.005 MILLIMETERS MIN MAX – 5.72 0.36 0.58 0.97 1.65 0.20 0.38 5.59 7.87 7.37 8.13 2.54 3.18 5.08 0.38 1.78 0.13 – B S1 Ceramic SB CERAMIC SIDEBRAZE PACKAGE (0.300 in.) DIM PINS D D D D D D 8 14 16 18 20 24 INCHES MILLIMETERS MIN MAX MIN MAX – 0.550 – 13.97 – 0.785 – 19.94 – 0.840 – 21.34 – 0.960 – 24.38 – 1.060 – 26.92 – 1.280 – 32.51 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 © 1997 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.