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19-0180; Rev 0; 9/93
Precision, Quad, SPST Analog Switches
_______________General Description
The MAX361/MAX362 are precision, quad, single-pole single-throw (SPST) analog switches. The MAX361 has four normally closed (NC) switches, and the MAX362 has four normally open (NO) switches. Both parts offer low channel on resistance (less than 85), guaranteed to match within 3 between channels and to remain flat over the analog signal range (9 max). Both parts also offer low leakage (less than 500pA at +25C and less than 4nA at +85C) and fast switching (turn-on time less than 250ns and turn-off time less than 170ns). The MAX361/MAX362 are fabricated with Maxim's new improved 44V silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (35W), and electrostatic discharge (ESD) greater than 2000V. The 44V maximum breakdown voltage allows rail-to-rail analog signal handling capability. These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (4.5V to 20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.
____________________________Features
o Low On Resistance: < 45 Typical (85 Max) o Guaranteed Matched On Resistance Between Channels: < 2 o Guaranteed Flat On Resistance over Analog Signal Range: 9 Max o Guaranteed Charge Injection: < 10pC o Guaranteed Off-Channel Leakage: <4nA at +85C o ESD Guaranteed > 2000V per Method 3015.7 o Single-Supply Operation (+10V to +30V) Bipolar-Supply Operation (4.5V to 20V) o TTL-/CMOS-Logic Compatible o Rail-to-Rail Analog Signal Handling Capability
MAX361/MAX362
______________Ordering Information
PART MAX361CPE MAX361CSE MAX361C/D MAX361EPE MAX361ESE MAX361EJE MAX361MJE MAX362CPE MAX362CSE MAX362C/D MAX362EPE MAX362ESE MAX362EJE MAX362MJE TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO Dice* 16 Plastic DIP 16 Narrow SO 16 CERDIP 16 CERDIP 16 Plastic DIP 16 Narrow SO Dice* 16 Plastic DIP 16 Narrow SO 16 CERDIP 16 CERDIP
________________________Applications
Sample-and-Hold Circuits Guidance and Control Systems Heads-Up Displays Test Equipment Communications Systems Battery-Operated Systems PBX, PABX
* Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1 COM1 2 NC1 3 V- 4 GND 5 NC4 6 COM4 7 IN4 8 DIP/SO
MAX361 LOGIC SWITCH 0 1 ON OFF SWITCHES SHOWN FOR LOGIC "0" INPUT 16 IN2 15 COM2 14 NC2 13 V+
IN1 1 COM1 2 NO1 3 V- 4 GND 5 NO4 6 COM4 7 IN4 8 DIP/SO
16 IN2 15 COM2 14 NO2 13 V+
MAX361
12 N.C. 11 NC3 10 COM3 9
MAX362
12 N.C. 11 NO3 10 COM3 9
IN3
IN3
MAX362 LOGIC SWITCH 0 1 OFF ON
N.C. = Not Internally Connected
_______________________________________________________________________ Maxim Integrated Products
1
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Precision, Quad, SPST Analog Switches MAX361/MAX362
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ ....................................................................................44V GND .................................................................................25V IN_, COM_, NO_, NC_ ...........(V- - 2V) to (V+ + 2V) or 30mA (whichever occurs first) Continuous Current (any terminal) .....................................30mA Peak Current COM, NO, NC (pulsed at 1ms, 10% duty cycle max)..........................100mA ESD....................................................................................2000V Note 1: All leads are soldered or welded to PC board.
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.
Continuous Power Dissipation (TA = +70C) (Note 1) Plastic DIP (derate 10.53mW/C above +70C)..........842mW Narrow SO (derate 8.70mW/C above +70C)............696mW CERDIP (derate 10.00mW/C above +70C) ..............800mW Operating Temperature Ranges: MAX36_C_ _.......................................................0C to +70C MAX36_E_ _ ....................................................-40C to +85C MAX36_MJE..................................................-55C to +125C Storage Temperature Range ............................-65C to +150C Lead Temperature (soldering, 10sec) ............................+300C
ELECTRICAL CHARACTERISTICS--Dual Supplies
(V+ = 15V, V- = -15V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER ANALOG Analog-Signal Range On Resistance (COM_ to NO_ or COM_ to NC_ terminals) On Resistance Match Between Channels (Note 4) On Resistance Flatness (Note 4) Off Leakage Current (NO_ or NC_ terminal) VCOM_, VNO_, VNC_ RON RON RON INO_, INC_ (Note 3) I(NO or NC) = -10mA, VCOM_ = 8.5V or -8.5V, V+ = 13.5V, V- = -13.5V I(NO or NC) = -10mA, VCOM_ = 10V or -10V, V+ = 15V, V- = -15V I(NO or NC) = -10mA, VCOM_ = 5V or -5V, V+ = 15V, V- = -15V VCOM_ = 15.5V, VNC_ or VNO_ = +15.5V, V+ = 16.5V, V- = -16.5V VNC_ or VNO_ = 15.5V, VCOM_ = +15.5V, V+ = 16.5V, V- = -16.5V TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMAX TA = +25C TA = TMAX TA = +25C TA = TMAX C, E M C, E M C, E M -0.50 -4 -20 -0.50 -4 -20 -0.50 -6 -40 0.08 0.01 0.01 -15 50 15 85 100 2 4 9 15 0.50 4 20 0.50 4 20 0.50 6 40 nA nA nA V SYMBOL CONDITIONS MIN TYP MAX UNITS (Note 2)
Off Leakage Current (COM_ terminal) On Leakage Current (COM_ and NC_ or NO_ terminal) DIGITAL Input Current with Input Voltage High Input Current with Input Voltage Low
ICOM
VCOM_ = 15.5V, ICOM VNC_ or VNO_ = 15.5V, or INO, INC V+ = 16.5V, V- = -16.5V
IINH IINH
VIN_ = 2.4V VIN_ = 0.8V
-500 -500
0.01 0.01
500 500
nA nA
2
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Precision, Quad, SPST Analog Switches
ELECTRICAL CHARACTERISTICS--Dual Supplies (continued)
(V+ = 15V, V- = -15V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SUPPLY Power-Supply Range Positive Supply Current V+, VI+ All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V TA = +25C TA = TMIN to TMAX -1 -5 -100 -15 4.5 15 -0.0001 20.0 100 1 5 A V A SYMBOL CONDITIONS MIN TYP MAX UNITS (Note 2)
MAX361/MAX362 MAX361/MAX362
Negative Supply Current
I-
A
Ground Current DYNAMIC Turn-On Time Turn-Off Time Charge Injection Off Isolation (Note 5) Crosstalk (Note 6) Off Capacitance NC or NO Off Capacitance COM_ Channel-On Capacitance
IGND
All channels on or off, VIN = 0V or 5V, V+ = 16.5V, V- = -16.5V
tON tOFF Q OIRR
Figure 1, VS = 10V, RL = 1k TA = +25C MAX361, Figure 1, VCOM = 10V TA = +25C MAX362, Figure 1, VCOM = 10V TA = +25C CL = 1nF, VGEN = 0V, RGEN = 0, Figure 2 RL = 50, CL = 5pF, f = 1MHz, Figure 3 RL = 50, CL = 5pF, f = 1MHz, Figure 4 TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C
150 90 110 5 60 -100 4 4 16
250 120 170 10
ns ns ns pC dB dB pF pF pF
C(OFF)
f = 1MHz, Figure 5
CCOM(OFF) f = 1MHz, Figure 5 CCOM(ON) f = 1MHz, Figure 5
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Precision, Quad, SPST Analog Switches MAX361/MAX362
ELECTRICAL CHARACTERISTICS--Single Supply
(V+ = 12V, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SWITCH Analog-Signal Range On Resistance (COM_ to NO_ or COM_ to NC_ terminals) SUPPLY Power-Supply Range Positive Supply Current Negative Supply Current Ground Current DYNAMIC Turn-On Time Turn-Off Time Charge Injection tON tOFF Q Figure 1, VS = 8V Figure 1, VS = 8V CL = 1nF, VGEN = 0V, TA = +25C TA = +25C TA = +25C 300 60 5 400 200 10 ns ns pC V+ I+ IIGND All channels on or off, VIN = 0V or 5V All channels on or off, VIN = 0V or 5V TA = +25C -1 -5 -100 -15 TA = TMIN to TMAX All channels on or off, VIN = 0V or 5V 10 15 -0.0001 30 100 1 +5 V A A A VCOM_, VNO_, VNC_ RON (Note 3) I(NC or NO) = 1.0mA, VCOM__ = 3V, 8V, V+ = 10.8V TA = +25C TA = TMIN to TMAX 0 100 12 160 200 V SYMBOL CONDITIONS MIN TYP MAX UNITS (Note 2)
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: Guaranteed by design. Note 4: On resistance match between channels and flatness are guaranteed only with bipolar-supply operation. Note 5: See Figure 3. Off Isolation = 20 log10
VCOM VNC _ or VNO_
, VCOM = output, VNC or NO = input to off switch.
Note 6: Between any two switches. See Figure 4.
4
_______________________________________________________________________________________
Precision, Quad, SPST Analog Switches
__________________________________________Typical Operating Characteristics
(TA = +25C, unless otherwise noted.) ON LEAKAGE CURRENTS
4 3 INC_, INO_, ICOM (nA) INC_, INO_, ICOM (nA) 2 1 0 -1 -2 -15 0 VNC, VNO ,VCOM (V) 15 V+ = 15V V- = -15V -1 -15 0 VNC, VNO, VCOM (V) TA = +125C TA = +85C 1 VIN (V) TA = +125C TA = +85C 1.5 V+ = 15V V- = -15V 15 0.5 0 5 10 15 20 BIPOLAR SUPPLY VOLTAGE (V) MIN 2
MAX361/MAX362
OFF LEAKAGE CURRENTS
3.5 3.0 2.5 2.0
SWITCHING THRESHOLD vs. BIPOLAR SUPPLY VOLTAGE
MAX
0
ON RESISTANCE vs. VCOM AND UNIPOLAR SUPPLY VOLTAGE
250 225 200 175 RON () RON () 180 150 120 90 60 V+ = 20V 0 5 10 VCOM (V) 15 20 30 0 -20
ON RESISTANCE vs. VCOM AND BIPOLAR SUPPLY VOLTAGE
120 100 5V RON () 80 60
ON RESISTANCE vs. VCOM AND BIPOLAR VOLTAGE AND TEMPERATURE
V+ = 15V, V- = -15V
150 125 100 75 50 25 0 V+ = 10V V+ = 15V
TA = +125C TA = +25C
15V
10V 40 20V -10 0 VCOM (V) +10 +20 20 0 -14 -7
TA = -55C 0 VCOM (V) 7 14
ON RESISTANCE vs. VCOM AND UNIPOLAR SUPPLY VOLTAGE AND TEMPERATURE
150 TA = +125C 125 100 RON () 75 50 25 0 0 4 VCOM (V) 8 12 V+ = 12V V- = 0V TA = +25C TIME (ns) 200 160 240
SWITCHING TIME vs. BIPOLAR SUPPLY VOLTAGE
350 300 250 TIME (ns) 200 150 100 50 0
SWITCHING TIMES vs. UNIPOLAR SUPPLY VOLTAGE
V- = 0V
TA = -55C
120 80
t ON t OFF
t ON t OFF
40 0 5 10 15 20 BIPOLAR SUPPLY VOLTAGE (V)
10
15 20 UNIPOLAR SUPPLY VOLTAGE (V)
24
_______________________________________________________________________________________
5
Precision, Quad, SPST Analog Switches MAX361/MAX362
____________________________Typical Operating Characteristics (continued)
(TA = +25C, unless otherwise noted.) CHARGE INJECTION vs. VCOM VOLTAGE
V+ = 15V V- = -15V CL = 1nF 20 Q (pC) Q (pC) 10
40
CHARGE INJECTION vs. VCOM VOLTAGE
V+ = 12V V- = 0V CL = 1nF
0
0
-20 -14 -10 0 VCOM (V) 10 14
-10 0 5 VCOM (V) 10 12
______________________________________________________________Pin Description
NAME PIN 1, 16, 9, 8 MAX361 IN1-IN4 MAX362 IN1-IN4 Logic-level input Analog switch common terminal NC (normally closed, MAX361) NO (normally open, MAX362) Analog switch terminal Negative supply voltage input Ground Not internally connected Positive supply voltage input--connected to substrate. FUNCTION
2, 15, 10, 7 COM1-COM4 COM1-COM4 3, 14, 11, 6 4 5 12 13 NC1-NC4 VGND N.C. V+ NO1-NO4 VGND N.C. V+
___________Applications Information
Using supply voltages other than 15V is reduces the analog signal range. The MAX361/MAX362 switches operate with bipolar supplies of 4.5V to 20V. Typical operating characteristic graphs show typical on resistance for 15V, 10V, and 5V supplies. Switching times increase by a factor of two or more for 5V operation. The MAX361/MAX362 can also operate from +10V to +30V unipolar supplies. Both parts can also be powered from unbalanced supplies such as +24V and -5V. Connect V- to 0V when operating with a single supply.
6
Operation with Supply Voltages Other Than 15VO
Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings may cause permanent damage to the devices. Always sequence V+ on first, followed by V-, and logic inputs. If power-supply sequencing is not possible, add two small signal diodes in series with the supply pins for overvoltage protection (Figure 6). Adding the diodes reduces the analog signal range to 1V below V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected. Device operation is unchanged, and the difference from V+ to Vshould not exceed +44V.
_______________________________________________________________________________________
Precision, Quad, SPST Analog Switches MAX361/MAX362
+15V LOGIC INPUT +3V 50% 0V SWITCH V INPUT COM tOFF VO LOGIC INPUT +3V tf < 20ns tr < 20ns SWITCH INPUT V+ NO_ OR NC_ VO RL GND V35pF
VCOM 1N_
COM_
0.8VO
0.8VO
-15V REPEAT TEST FOR CHANNELS 2, 3, AND 4. FOR LOAD CONDITIONS, SEE SPECIFICATIONS CL (INCLUDES FIXTURE AND STRAY CAPACITANCE) RL VO = VCOM RL + RON
SWITCH OUTPUT
0V tON LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 1. Switching-Time Test Circuit
+15V VO VO CL GND IN_ V-15V VIN = +3V OFF IN_ MAX362 Q = VO x CL ON IN_ MAX361 OFF ON
VO
RGEN
COM_
V+
NO_ OR NC_
OFF
VGEN
OFF
Figure 2. Charge-Injection Test Circuit
C SIGNAL GENERATOR
+15V V+
C SIGNAL GENERATOR
+15V V+
10dBm
COM1
NC1 OR NO1
50
10dBm
COM
RGEN = 50 0.8V, 2.4V IN1 NC2 OR NO2 GND RL -15V IN2 COM2 VC 0.8V, 2.4V
RGEN = 50 IN_ NC_ OR NO_ GND RL -15V VC 0.8V, 2.4V
ANALYZER
ANALYZER
Figure 3. Crosstalk Test Circuit (repeat for channels 3 and 4)
Figure 4. Off-Isolation Test Circuit
7
_______________________________________________________________________________________
Precision, Quad, SPST Analog Switches MAX361/MAX362
C
+15V V+ +V COM_ COM_ 0.8V, 2.4V Vg VC
V+
METER IMPEDANCE ANALYZER OR EQUIVALENT f = 1MHz
IN_ NO_ OR NC_ GND
NC_ OR NO_
-15V V-
Figure 5. Channel Capacitance Test Circuit
Figure 6. Overvoltage Protection Using Blocking Diodes
___________________Chip Topography
COM1 IN1 IN2 COM2
NO1
NO2
VGND
V+
0.091" (2.31mm) N.C.
NO4
NO3
COM4
IN4 IN3 0.071" (1.80mm)
COM3
TRANSISTOR COUNT: 126; SUBSTRATE CONNECTED TO V+.
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.
8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1993 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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