MAX313FESE+TG52

19-2737; Rev 0; 1/03 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches The MAX312F/MAX313F/MAX314F are quad, singlepole/single-throw (SPST), fault-protected analog switches. They are pin compatible with the industry-standard nonprotected MAX312/MAX313/MAX314. These switches feature fault-protected inputs and Rail-to-Rail signalhandling capability. All analog signal terminals are protected from overvoltage faults up to ±36V with power on and up to ±40V with power off. During a fault condition, the COM_, NO_, or NC_ terminal becomes an open circuit and only microamperes of leakage current flow from the source. On-resistance is 10Ω (max) and is matched between switches to 0.5Ω (max) at +25°C. The MAX312F has four normally closed (NC) switches. The MAX313F has four normally open (NO) switches. The MAX314F has two NC and two NO switches. These CMOS switches operate with dual power supplies ranging from ±4.5V to ±20V or a single supply between +9V and +36V. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility when using ±15V or a single +12V supply. For supply voltages of ±5V, +5V, and +3V, refer to the MAX4711/MAX4712/MAX4713 data sheet. Features ♦ No Power-Supply Sequencing Required ♦ Rail-to-Rail Signal Handling ♦ All Switches Off with Power Off ♦ All Switches Off when V+ is Off and V- is On ♦ ±40V Fault Protection with Power Off ♦ ±36V Fault Protection with ±15V Supplies ♦ Control Line Fault Protection from V- - 0.3V to V- + 40V ♦ Pin Compatible with Industry-Standard DG411/DG412/DG413 ♦ 600ns (typ) Fault Response Time ♦ 10Ω (max) RON with ±15V Supplies ♦ ±4.5V to ±20V Dual Supplies ♦ +9V to +36V Single Supply ♦ TTL- and CMOS-Compatible Logic Inputs with ±15V or Single +9V to +15V Supplies Ordering Information Applications Communications Systems Signal Routing Test Equipment PART TEMP RANGE PIN-PACKAGE MAX312FESE -40°C to +85°C 16 SO MAX312FEPE -40°C to +85°C 16 Plastic DIP Ordering Information continued at end of data sheet. Data Acquisition Pin Configurations Industrial and Process Control Systems Avionics TOP VIEW Redundant/Backup Systems ATE Hot Swap IN1 1 16 IN2 COM1 2 15 COM2 NC1 3 14 NC2 V- 4 GND 5 NC4 6 11 NC3 COM4 7 10 COM3 IN4 8 13 V+ MAX312F 12 N.C. 9 IN3 DIP/SO Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Functional Diagram appears at end of data sheet. Pin Configurations continued at end of data sheet. MAX312F LOGIC SWITCH 0 1 ON OFF N.C. = NOT CONNECTED. SWITCHES SHOWN FOR LOGIC 0 INPUT. ALL SWITCHES ARE OFF WITH POWER REMOVED. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX312F/MAX313F/MAX314F General Description MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND.) V+ ...........................................................................-0.3V to +44V V- ............................................................................-44V to +0.3V V+ to V-...................................................................-0.3V to +44V IN_ ......................................................... (V- - 0.3V) to (V- + 40V) NO_, NC_ to COM_ (Note 1) .................................. -40V to +40V COM_, NO_, NC_ Voltage with Power On (Note 1).............................................. -36V to +36V COM_, NO_, NC_ Voltage with Power Off (Note 1).............................................. -40V to +40V Peak Current COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle) ................................±300mA Continuous Current (any other terminal).......................... ±30mA Continuous Current (COM_, NO_, NC_).........................±100mA Continuous Power Dissipation (TA = +70°C) 16-Pin SO (derate 8.7mW/°C above +70°C)................696mW 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C) ........................................................ 842mW Operating Temperature Range .......................... -40°C to +85°C Junction Temperature .................................................... +150°C Storage Temperature Range ........................... -65°C to +160°C Lead Temperature (soldering, 10s) ............................... +300°C Note 1: COM_, NO_, and NC_ pins are fault protected. Signals on COM_, NO_, and NC_ exceeding -36V to +36V may damage the device during power-on conditions. When the power is off, the maximum range is -40V to +40V. 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—±15V Dual Supplies (V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Fault-Free Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) VCOM_, VNO_, VNC_ E V- +25°C RON ICOM_ = 10mA; VNO_, VNC_ = ±10V E ∆RON ICOM_ = 10mA; VNO_, VNC_ = ±10V E E 8 10 13 +25°C 0.05 0.5 0.75 +25°C 0.25 1 On-Resistance Flatness (Note 5) RFLAT(ON) ICOM_ = 10mA; VNO_, VNC_ = ±5V, 0V NO_, NC_ Off-Leakage Current (Note 6) INO_(OFF), INC_(OFF) VCOM_ = ±10V; VNO_, VNC_ = ±10V +25°C -1 +1 E -60 +60 COM_ Off-Leakage Current (Note 6) ICOM_(OFF) VCOM_ = ±10V; VNO_, VNC_ = ±10V +25°C -1 +1 E -60 +60 COM_ On-Leakage Current (Note 6) ICOM_(ON) VCOM_ = ±10V; VNO_, VNC_ = ±10V or floating +25°C -2 +2 E -60 +60 V+ = +15V, V- = -15V E -36 +36 1.25 Ω Ω Ω nA nA nA FAULT Fault-Protected Analog Signal Range VCOM_, VNO_, VNC_ V+ = 0V, V- = -15V E -36 +36 V+ = V- = 0V E -40 +40 NO_ or NC_ Off-Leakage Current (Note 6) INO_(OFF), INC_(OFF) VNO_, VNC_ = ±36V; V+ = +15V, 0V; V- = -15V +25°C -1 +1 E -10 +10 COM_ Off-Leakage Current (Note 6) ICOM_(OFF) VCOM_ = ±36V; V+ = +15V, 0V; V- = -15V +25°C -1 +1 E -10 +10 2 _______________________________________________________________________________________ V µA µA Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches (V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER NO_ or NC_ Leakage Current (Note 6) COM_ Leakage Current (Note 6) SYMBOL INO_, INC_ ICOM_ CONDITIONS VNO_, VNC_ = ±40V; V+ = V- = 0V VCOM_ = ±40V; V+ = V- = 0V Fault-Trip Threshold TA MIN TYP MAX +25°C -1 +1 E -10 +10 +25°C -1 +1 E -10 +10 E V- - 0.4 V+ + 0.4 UNITS µA µA V ± Fault Response Time tRES VNO_, VNC_ = ±36V; RL = 300Ω E 600 ns ± Fault Recovery Time tREC VNO_, VNC_ = ±36V; RL = 300Ω E 1 µs Turn-On Time tON VNO_ or VNC_ = ±10V, RL = 300Ω, +25°C CL = 35pF, Figure 2 E 115 Turn-Off Time tOFF VNO_ or VNC_ = ±10V, RL = 300Ω, +25°C CL = 35pF, Figure 2 E 70 Break-Before-Make Time Delay (MAX314F Only) (Note 7) tBBM VNO_ or VNC_ = ±10V, RL = 100Ω, +25°C CL = 10pF, Figure 3 E SWITCH DYNAMICS 225 275 185 235 5 45 ns ns ns 2 VGEN = 0V, RGEN = 0Ω, CL = 1nF, Figure 4 +25°C 70 pC f = 1MHz, Figure 5 +25°C 20 pF COM_ Off-Capacitance CCOM_(OFF) f = 1MHz, Figure 5 +25°C 20 pF COM_ On-Capacitance CCOM_(ON) f = 1MHz, Figure 5 +25°C 43 pF Charge Injection Q NO_ or NC_ Off-Capacitance CN_(OFF) Off-Isolation (Note 8) VISO f = 1MHz, RL = 50Ω, CL = 15pF, PIN = 0dBm, Figure 6 +25°C -55 dB Channel-to-Channel Crosstalk (Note 9) VCT f = 1MHz, RL = 50Ω, CL = 15pF, PIN = 0dBm, Figure 6 +25°C -104 dB LOGIC INPUT Input Logic High VIH E Input Logic Low VIL E Input Leakage Current IIN VIN_ = 0V or V+ 2.4 V 0.8 V E -1 +1 µA E ±4.5 ±20 V POWER SUPPLY Power-Supply Range V+, VAll VIN_ = +5V, VCOM_ = 0V V+ Supply Current I+ All VIN_ = 0V or V+, VCOM_ = 0V +25°C 340 E +25°C E 500 700 140 250 µA 350 _______________________________________________________________________________________ 3 MAX312F/MAX313F/MAX314F ELECTRICAL CHARACTERISTICS—±15V Dual Supplies (continued) MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches ELECTRICAL CHARACTERISTICS—±15V Dual Supplies (continued) (V+ = +15V, V- = -15V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS All VIN_ = +5V, VCOM_ = 0V V- Supply Current IAll VIN_ = 0V or V+, VCOM_ = 0V All VIN_ = +5V, VCOM_ = 0V GND Supply Current IGND All VIN_ = 0V or V+, VCOM_ = 0V TA MIN +25°C TYP MAX 140 200 140 250 E 300 +25°C E UNITS µA 350 +25°C 200 E 300 400 +25°C 0 E 1 µA 10 ELECTRICAL CHARACTERISTICS—Single +12V Supply (V+ = +12V, V- = 0V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Fault-Free Analog Signal Range On-Resistance On-Resistance Match Between Channels (Note 4) VCOM_, VNO_, VNC_ E RON ICOM_ = 10mA; VNO_, VNC_ = +10V ∆RON ICOM_ = 10mA; VNO_, VNC_ = +10V 0 +25°C E +25°C 16 25 0.4 30 1.5 E 2 +25°C 3 6 On-Resistance Flatness RFLAT(ON) ICOM_ = 10mA; VNO_, VNC_ = +2V, +6V, +10V E NO_, NC_ Off-Leakage Current (Note 6) INO_(OFF), INC_(OFF) VCOM_ = +1V, +10V; VNO_, VNC_ = +10V, +1V +25°C -1 +1 E -60 +60 COM_ Off-Leakage Current (Note 6) ICOM_(OFF) VCOM_ = +1V, +10V; VNO_, VNC_ = +10V, +1V +25°C -1 +1 E -60 +60 COM_ On-Leakage Current (Note 6) VCOM_ = +1V, +10V; VNO_, VNC_ = +1V, +10V, or floating +25°C -2 +2 ICOM_(ON) E -60 +60 7 Ω Ω Ω nA nA nA FAULT Fault-Protected Analog Signal Range VCOM_, VNO_, VNC_ V+ = +12V, V- = 0V E -36 +36 V+ = V- = 0V E -40 +40 NO_ or NC_ Off-Leakage Current (Note 6) INO_(OFF), INC_(OFF) VNO_, VNC_ = ±36V; V+ = +12V; V- = 0V +25°C -1 +1 E -10 +10 COM_ Off-Leakage Current (Note 6) ICOM_(OFF) VNO_, VNC_ = ±36V; V+ = +12V; V- = 0V +25°C -1 +1 E -10 +10 NO_ or NC_ Leakage Current (Note 6) INO_, INC_ V+ = V- = 0V; VNO_, VNC_ = ±40V 4 +25°C -1 +1 E -10 +10 _______________________________________________________________________________________ V µA µA µA Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches (V+ = +12V, V- = 0V, VIH = +2.4V, VIL = +0.8V, GND = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER COM_ Leakage Current (Note 6) SYMBOL CONDITIONS ICOM_ V+ = V- = 0V; VNO_, VNC_ = ±40V TA MIN TYP MAX +25°C -1 +1 E -10 +10 UNITS µA Fault Response Time tRES VNO_, VNC_ = +36V; RL = 300Ω E 200 ns Fault Recovery Time tREC VNO_, VNC_ = +36V; RL = 300Ω E 1 µs Turn-On Time tON VNO_ or VNC_ = +10V, RL = 300Ω, +25°C CL = 35pF, Figure 2 E 140 Turn-Off Time tOFF VNO_ or VNC_ = +10V, RL = 300Ω, +25°C CL = 35pF, Figure 2 E 75 Break-Before-Make Time Delay (MAX314F Only) (Note 6) tBBM VNO_ or VNC_ = +10V, RL = 100Ω, +25°C CL = 10pF, Figure 3 E SWITCH DYNAMICS Charge Injection Q VGEN = 0V, RGEN = 0Ω, CL = 1nF, Figure 4 325 425 175 225 10 65 ns ns 5 +25°C ns -10 pC LOGIC INPUT Input Logic High VIH E Input Logic Low VIL E Input Leakage Current (Note 6) IIN VIN_ = 0V or V+ 2.4 E -1 E +9 V 0.8 V +1 µA +36 V POWER SUPPLY Power-Supply Range V+ All VIN_ = +5V, VCOM_ = +6V V+ Supply Current I+ All VIN_ = 0V or V+, VCOM_ = +6V Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8: Note 9: +25°C 160 400 E +25°C E 300 70 150 µA 250 The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. Electrical specifications at -40°C are guaranteed by design and not production tested. ∆RON = RON(MAX) - RON(MIN). Flatness is defined as the difference between the maximum and minimum value of on-resistance over the specified analog signal range. Single-supply leakage parameters are guaranteed by testing with dual supplies at the maximum rated temperature. Guaranteed by design. Off-isolation = 20 log10 [VCOM/(VNC or VNO)], VNC or VNO = output, VCOM = input to off switch. Between any two switches. _______________________________________________________________________________________ 5 MAX312F/MAX313F/MAX314F ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued) Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) 12 V+ = +15V V- = -15V TA = +85°C 10 V+ = +9V V- = 0V V+ = +12V V- = 0V V+ = +15V V- = 0V 25 20 9 RON (Ω) 15 V+ = +15V V- = -15V RON (Ω) RON (Ω) V+ = +10V V- = -10V 30 MAX312F/13F/14F toc02 V+ = +5V V- = -5V 20 15 MAX312F/13F/14F toc01 25 ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) TA = +25°C MAX312F/13F/14F toc03 ON-RESISTANCE vs. VCOM (DUAL SUPPLIES) V+ = +24V V- = 0V 15 TA = -40°C 6 10 3 5 V+ = +20V V- = -20V 0 0 -10 -5 0 5 10 15 20 -5 5 10 VCOM (V) ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) ON/OFF-LEAKAGE CURRENT vs. TEMPERATURE 15 TA = +25°C TA = -40°C 0 6 12 18 24 30 36 VCOM (V) CHARGE INJECTION vs. VCOM 10,000 ICOM(ON) 1000 15 200 MAX312F/13F/14F toc05 TA = +85°C MAX312F/13F/14F toc04 20 10 100 DUAL SUPPLIES: ±15V 150 100 10 INO(OFF), INC(OFF) ICOM(OFF) 50 1 0 SINGLE SUPPLY: +12V 5 0.1 V+ = +12V V- = 0V 2 4 6 8 10 -100 -40 12 -15 10 200 100 0 -200 IGND 2.5 DUAL SUPPLIES 2.0 -15 10 35 TEMPERATURE (°C) 60 85 0 5 500 400 10 15 300 tON 200 tOFF SINGLE SUPPLY 1.5 100 0 1.0 -300 -40 -5 TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE (DUAL SUPPLIES) tON/tOFF (ns) I+ I- -10 VCOM (V) 3.0 THRESHOLD VOLTAGE (V) DUAL SUPPLIES: V+ = +15V, V- = -15V, VIN_ = +5V MAX312F/13F/14F toc07 500 -100 -15 LOGIC-LEVEL THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE 300 85 60 TEMPERATURE (°C) VCOM (V) 400 35 MAX312F/13F/14F toc09 0 -50 DUAL SUPPLIES: V+ = +15V, V- = -15V 0.01 0 6 0 MAX312F/13F/14F toc08 RON (Ω) -10 VCOM (V) 25 V+ = +36V V- = 0V 0 -15 Q (pC) -15 LEAKAGE CURRENT (pA) -20 V+ = +28V V- = 0V MAX312F/13F/14F toc06 5 SUPPLY CURRENT (µA) MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 0 5 10 15 20 25 SUPPLY VOLTAGE (V) 30 35 40 5 10 15 SUPPLY VOLTAGE (V+, V-) _______________________________________________________________________________________ 20 Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 80 150 tON 100 tON 40 160 50 tOFF 27 36 0 -40 -15 10 35 60 85 -40 -15 10 35 60 85 TEMPERATURE (°C) FREQUENCY RESPONSE TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY FAULT CURRENT vs. FAULT VOLTAGE (DUAL SUPPLIES) THD + N (%) ON-RESPONSE -40 OFF-ISOLATION -60 ±15V DUAL SUPPLIES: IN = OUT = 600Ω, VP-P = 5V 0.001 DUAL SUPPLIES: V+ = +15V, V- = -15V 150 100 ICOM (µA) 0 200 MAX312F/13F/14F toc14 MAX312F/13F/14F toc13 0.01 MAX312F/13F/14F toc15 TEMPERATURE (°C) V+ = +15V, V- = -15V 50 0 -50 -80 -100 -100 -150 CROSSTALK 0.0001 0.1 1 10 100 -200 10 1000 FOR |VCOM| < VSUPPLY, ICOM = VCOM/RL 100 1k 10k FREQUENCY (Hz) FREQUENCY (MHz) -60 -40 -20 0 20 40 60 VCOM (V) FAULT CURRENT vs. FAULT VOLTAGE (SINGLE SUPPLY) 200 MAX312F/13F/14F toc16 0.01 +12V SINGLE SUPPLY 150 100 ICOM (µA) -120 0.001 tOFF SUPPLY VOLTAGE (V+) 20 -20 80 DUAL SUPPLIES: ±15V 0 18 tON 120 40 V- = GND 9 V+ = +12V, V- = 0V tOFF 0 LOSS (dB) 200 tON/tOFF (ns) 120 TURN-ON/TURN-OFF TIME vs. TEMPERATURE (SINGLE SUPPLY) MAX312F/13F/14F toc11 200 tON/tOFF (ns) 160 tON/tOFF (ns) 250 MAX312F/13F/14F toc10 200 TURN-ON/TURN-OFF TIME vs. TEMPERATURE (DUAL SUPPLIES) MAX312F/13F/14F toc12 TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE (SINGLE SUPPLY) 50 0 -50 -100 -150 FOR 0V < VCOM < VSUPPLY, ICOM = VCOM/RL -200 -60 -40 -20 0 20 40 60 VCOM (V) _______________________________________________________________________________________ 7 MAX312F/MAX313F/MAX314F Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) FAULT RECOVERY TIME (POSITIVE INPUT) INPUT OVERVOLTAGE vs. OUTPUT MAX312F/13F/14F toc18 MAX312F/13F/14F toc17 +25V VNO_, VNC_ INPUT +25V VNO_, VNC_ INPUT +5V GND GND -25V +5V VCOM_ OUTPUT GND +15V GND -15V 1µs/div 2ms/div FAULT RESPONSE TIME (POSITIVE INPUT) FAULT RECOVERY TIME (NEGATIVE INPUT) MAX312F/13F/14F toc20 MAX312F/13F/14F toc19 GND -5V VNO_, VNC_ INPUT VNO_, VNC_ INPUT 10V/div -25V GND GND VCOM_ OUTPUT -5V VCOM_ OUTPUT 10V/div GND 400ns/div 1µs/div FAULT RESPONSE TIME (NEGATIVE INPUT) FAULT RESPONSE (V+ = 0V, V- = -15V) MAX312F/13F/14F toc21 MAX312F/13F/14F toc22 +25V VNO_, VNC_ INPUT GND VNO_, VNC_ INPUT 10V/div GND -25V GND VCOM_ OUTPUT 10V/div 1µs/div 8 GND VCOM_ OUTPUT 500mV/div 200µs/div _______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches PIN NAME FUNCTION MAX312F MAX313F MAX314F 1, 16, 9, 8 1, 16, 9, 8 1, 16, 9, 8 IN1, IN2, IN3, IN4 2, 15, 10, 7 2, 15, 10, 7 2, 15, 10, 7 COM1, COM2, COM3, COM4 Analog Switch Common Terminals 3, 14, 11, 6 — — NC1, NC2, NC3, NC4 Analog Switch Normally Closed Terminals — 3, 14, 11, 6 — NO1, NO2, NO3, NO4 Analog Switch Normally Open Terminals — — 3, 6 NO1, NO4 Analog Switch Normally Open Terminals — — 14, 11 NC2, NC3 Analog Switch Normally Closed Terminals 4 4 4 V- 5 5 5 GND Ground. Connect to digital ground. 12 12 12 N.C. No Connection. Not internally connected. 13 13 13 V+ Detailed Description The MAX312F/MAX313F/MAX314F are fault-protected CMOS analog switches with unique operation and construction. These switches differ considerably from traditional fault-protection switches, with several advantages. First, they are constructed with two parallel FETs, allowing very low on-resistance when the switch is on. Second, they allow signals on the NO_ or NC_ pins that are within, or slightly beyond, the supply rails to be passed through the switch to the COM_ terminal (or vice versa), allowing true rail-to-rail signal operation. Third, the MAX312F/MAX313F/MAX314F have the same fault-protection performance on any of the NO_, NC_, or COM_ switch inputs. Operation is identical for both fault polarities. The fault protection extends to ±36V from GND with ±15V supplies. During a fault condition, the particular overvoltage input (COM_, NO_, NC_) pin becomes high impedance regardless of the switch state or load resistance. When power is removed, the fault protection is still in effect. In this case, the COM_, NO_, or NC_ terminals are a virtual open circuit. The fault can be up to ±40V with power off. The switches turn off when V+ is not powered, regardless of V-. Pin Compatibility These switches have identical pinouts to common nonfault-protected CMOS switches. They allow for carefree Logic-Control Digital Inputs Negative-Supply Voltage Input. Connect to GND for singlesupply operation. Bypass with a 0.1µF capacitor to GND. Positive-Supply Voltage Input. Bypass with a 0.1µF capacitor to GND. direct replacement in existing printed circuit boards since the NO_, NC_, and COM_ pins of each switch are fault protected. Internal Construction Internal construction is shown in Figure 1, with the analog signal paths shown in bold. A single NO switch is shown. The NC configuration is identical except the logic-level translator becomes an inverter. The analog switch is formed by the parallel combination of N-channel FET (N1) and P-channel FET (P1), which are driven on and off simultaneously according to the input fault condition and the logic-level state. Normal Operation Two comparators continuously compare the voltage on the COM_, NO_, and NC_ pins with V+ and V-. When the signal on COM_, NO_, or NC_ is between V+ and V-, the switch acts normally, with FETs N1 and P1 turning on and off in response to IN_ signals. The parallel combination of N1 and P1 forms a low-value resistor between NO_ (or NC_) and COM_ so that signals pass equally well in either direction. Positive Fault Condition When the signal on NO_ (or NC_) and COM_ exceeds V+, the high-fault comparator output is high, turning off FETs N1 and P1. This makes the NO_ (or NC_) and COM_ pins high impedance regardless of the switch _______________________________________________________________________________________ 9 MAX312F/MAX313F/MAX314F Pin Description MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches state. If the switch state is off, all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. Negative Fault Condition When the signal on NO_ (or NC_) and COM_ exceeds V-, the low-fault comparator output is high, turning off FETs N1 and P1. This makes the NO_ (or NC_) and COM_ pins high impedance regardless of the switch state. If the switch state is off, all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. Transient Fault Response and Recovery When a fast rise-time and fall-time transient on NO_, NC_, or COM_ exceeds V+ or V-, the output follows the input to the supply rail with only a few nanoseconds delay. This delay is due to the switch on-resistance and circuit capacitance to ground. When the input transient returns to within the supply rails, however, there is a longer output recovery time delay. For positive faults, the recovery time is typically 1µs. For negative faults, the recovery time is typically 0.6µs. These values depend on the output resistance and capacitance, and are not production tested or guaranteed. The delays are not dependent on the fault amplitude. Higher load resistance and capacitance increase recovery times. Ground There is no galvanic connection between the analog signal paths and GND. The analog signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled and their gates driven out of phase to V+ and V- by the logic-level translators. However, the potential of the analog signals must be defined or at least limited with respect to GND. V+ and GND power the internal logic and logic-level translators and set the input logic thresholds. The logiclevel translators convert the logic levels to switched V+ and V- signals to drive the gates of the analog switches. This drive signal is the only connection between the power supplies and the analog signals. Bipolar Supplies The MAX312F/MAX313F/MAX314F operate with bipolar supplies between ±4.5V and ±20V. The V+ and V- supplies need not be symmetrical, but their difference cannot exceed the absolute maximum rating of 44V. Single Supply The MAX312F/MAX313F/MAX314F operate from a single supply between +9V and +36V when V- is connected to GND. Fault-Protection Voltage and Power Off The maximum fault voltage on the NO_ (or NC_) and COM_ pins is ±36V with power applied and ±40V with power off. Failure Modes Exceeding the fault-protection voltage limits on NO_, NC_, or COM_, even for very short periods, can cause the device to fail (see the Absolute Maximum Ratings). The failure modes may not be obvious, and failure in one switch may or may not affect other switches in the same package. Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE MAX313FESE -40°C to +85°C 16 SO MAX313FEPE -40°C to +85°C 16 Plastic DIP MAX314FESE -40°C to +85°C 16 SO MAX314FEPE -40°C to +85°C 16 Plastic DIP Chip Information TRANSISTOR COUNT: 251 PROCESS: CMOS SUBSTRATE CONNECTED TO: V+ 10 ______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches NORMALLY OPEN SWITCH CONSTRUCTION V+ HIGH FAULT P1 NO_ COM_ N1 LOW FAULT ON IN_ MAX312F MAX313F MAX314F GND VESD DIODE Figure 1. Functional Diagram V+ V+ 3V NO_ OR NC_ VIN_ 10V 50% 0V VIN_ MAX312F MAX313F MAX314F COM_ GND V- 10V VOUT 90% 90% VOUT RL CL V- 0V tOFF tON V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 2. Switch Turn-On/Turn-Off Times ______________________________________________________________________________________ 11 MAX312F/MAX313F/MAX314F Test Circuits/Timing Diagrams MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches Test Circuits/Timing Diagrams (continued) V+ VIN_ IN_ IN_ NO_ NC_ 10V VIN_ MAX314F COM_ VOUT COM_ GND tF < 5ns tR < 5ns 3V V+ V- CL RL 50% 0V VNO_, VNC_ 90% VOUT V- 0V tBBM V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 3. MAX314F Break-Before-Make Interval V+ VIN_ IN_ V+ RGEN NO_ OR NC_ MAX312F MAX313F MAX314F GND 3V VGEN VIN_ 0V VOUT COM_ VOUT ∆VOUT VCL V- ∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = ∆VOUT x CL V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 4. Charge Injection V+ V+ NO_ V+ IN_ MAX312F NC_ MAX313F MAX314F COM_ GND V- 1MHz CAPACITANCE ANALYZER VV- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 5. COM_, NO_, NC_ Capacitance 12 ______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 50Ω RESISTOR ONLY NEEDED FOR CROSSTALK AND ISOLATION V+ 0.1µF NETWORK ANALYZER VIN V+ 50Ω 50Ω COM_ 3.0V IN_ MAX312F MAX313F MAX314F 50Ω VOUT MEAS NO_, NC_ GND V- REF 50Ω 50Ω 0.1µF VMEASUREMENTS ARE STANDARDIZED AGAINST SHORT AND OPEN AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINALS. ON-RESPONSE IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINALS. CROSSTALK IS MEASURED BETWEEN COM_ TERMINALS WITH ALL SWITCHES ON. V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION. Figure 6. Frequency Response, Off-Isolation, and Crosstalk Pin Configurations (continued) TOP VIEW IN1 1 16 IN2 COM1 2 15 COM2 NO1 3 14 NO2 V- 4 GND 5 13 V+ MAX313F 12 N.C. NO4 6 11 NO3 COM4 7 10 COM3 IN4 8 9 IN3 IN1 1 16 IN2 COM1 2 15 COM2 NO1 3 14 NC2 V- 4 GND 5 NO4 6 11 NC3 7 10 COM3 IN4 8 9 IN3 DIP/SO MAX313F LOGIC SWITCH 1 12 N.C. COM4 DIP/SO 0 13 V+ MAX314F OFF ON LOGIC 0 1 MAX314F SWITCHES SWITCHES 1, 4 2, 3 OFF ON ON OFF N.C. = NOT CONNECTED. SWITCHES SHOWN FOR LOGIC 0 INPUT. ALL SWITCHES ARE OFF WITH POWER REMOVED. ______________________________________________________________________________________ 13 MAX312F/MAX313F/MAX314F Test Circuits/Timing Diagrams (continued) Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) PDIPN.EPS MAX312F/MAX313F/MAX314F Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 14 ______________________________________________________________________________________ Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches 16L SOIC.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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX312F/MAX313F/MAX314F Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)