19-0159; Rev 0; 9/93
Precision, Dual, High-Speed Analog Switches
________________________________Features
♦ Low On Resistance <22Ω Typical (35Ω Max)
♦ Guaranteed Matched On Resistance Between
Channels <2Ω
♦ Guaranteed Flat On Resistance over Full Analog
Signal Range ∆3Ω Max
♦ Guaranteed Charge Injection <15pC
♦ Guaranteed Off-Channel Leakage <6nA at +85°C
♦ Single-Supply Operation (+10V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
♦ TTL-/CMOS-Logic Compatible
♦ Rail-to-Rail Analog Signal Handling Capability
_________________Ordering Information
PART
MAX301CPE
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
MAX301CSE
0°C to +70°C
16 Narrow SO
MAX301CJE
0°C to +70°C
16 CERDIP
Dice*
MAX301C/D
0°C to +70°C
___________________________Applications
MAX301EPE
-40°C to +85°C
16 Plastic DIP
Sample-and-Hold Circuits
Test Equipment
Heads-Up Displays
Guidance and Control Systems
MAX301ESE
-40°C to +85°C
16 Narrow SO
MAX301EJE
-40°C to +85°C
16 CERDIP
MAX301MJE
-55°C to +125°C
16 CERDIP
MAX301MLP
-55°C to +125°C
20 LCC**
Military Radios
Communication Systems
Battery-Operated Systems
PBX, PABX
Ordering Information continued on last page.
* Contact factory for dice specifications.
** Contact factory for package availability.
___________________________Pin Configurations/Block Diagrams/Truth Tables
TOP VIEW
COM1 1
16 NO1
COM1 1
16 NO1
N.C. 2
15 IN1
COM1 1
16 NO1
N.C. 2
15 IN1
N.C. 2
15 IN1
N.C. 3
14 V-
N.C. 4
13 GND
NC3 4
12 V L
NC4 5
MAX303 12 V L
NO4 5
MAX305 12 V L
N.C. 6
11 V+
COM4 6
11 V+
COM4 6
11 V+
N.C. 7
10 IN2
N.C. 5
MAX301
COM2 8
9
NO2
COM3 3
10 IN2
COM2 8
9
NO2
COM3 3
14 V-
NO3 4
13 GND
N.C. 7
10 IN2
COM2 8
9
DIP/SO
MAX301
LOGIC
SWITCH
LCC packages on last page.
13 GND
N.C. 7
DIP/SO
0
1
14 V-
OFF
ON
LOGIC
0
1
DIP/SO
MAX303
SWITCHES 1, 2 SWITCHES 3, 4
OFF
ON
NO2
ON
OFF
LOGIC
0
1
MAX305
SWITCH
OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
_______________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
MAX301/MAX303/MAX305
__________________General Description
The MAX301/MAX303/MAX305 are precision, dual, highspeed analog switches. The single-pole single-throw (SPST)
MAX301 and double-pole single-throw (DPST) MAX305 dual
switches are normally open (NO). The single-pole doublethrow (SPDT) MAX303 has two NO and two normally closed
(NC) poles. All three parts offer low on resistance (less than
35Ω), guaranteed to match to within 2Ω between channels
and to remain flat over the full analog signal range (∆3Ω max).
They also offer low leakage (less than 250pA at +25°C and
less than 6nA at +85°C) and fast switching (turn-on time less
than 150ns and turn-off time less than 100ns).
The MAX301/MAX303/MAX305 are fabricated with Maxim’s
new improved silicon-gate process for high system accuracy.
Design improvements guarantee extremely low charge injection (15pC) and low power consumption (35µW). A 44V maximum breakdown voltage allows rail-to-rail analog signal
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.
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+.......................................................................................44V
GND ...................................................................................25V
VL .................................................................(GND-0.3V) to (V+) +0.3V
NO_, NC_, IN_, COM_ ................(V- - 2V) to (V+ + 2V) or 30mA,
..................................................................whichever occurs first
Continuous Current, COM_, NO_, NC_...............................30mA
Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ..........................100mA
Continuous Power Dissipation (TA = +70°C) (Note 2)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C) .....842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) .......696mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C)..........800mW
20-Pin LCC (derate 9.09mW/°C above +70°C) ..................727mW
Operating Temperature Ranges:
MAX30_C_ _ .......................................................0°C to +70°C
MAX30_E_ _.....................................................-40°C to +85°C
MAX30_M_ _ ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Signals on NO_, NC_, or COM_ beyond V+ or V- are clamped by internal diodes. Limit forward 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
(V+ = 15V, V- = -15V, VL = +5V, GND = 0V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
TEMP. MIN
TYP MAX
UNITS
RANGE
(Note 2)
SWITCH
Analog-Signal Range
On Resistance
VANA
RON
On Resistance Match
Between Channels (Note 4)
RON
On Resistance Flatness
(Note 4)
RON
NC or NO
Off Leakage Current
COM Off Leakage Current
COM On
Leakage Current
2
NC_(OFF)
or
NO_(OFF)
COMOFF
COMON
(Note 3)
I(NC or NO) = -10mA,
VCOM_ = ±10V
VINH = 2.4V, VINL = 0.8V
I(NC or NO) = -10mA,
VCOM_ = ±10V
V+ = 15V, V- = -15V
IS = -10mA
VCOM_ = ±5V
V+ = 15V, V- = -15V
VCOM_ = +15.5V,
VNC_ or VNO_ = ±15.5V,
V+ = 16.5V, V- = -16.5V
VTA = +25°C
TA = TMIN to TMAX
20
35
M
20
30
C, E
55
M
C, E, M
TA = TMIN to TMAX
C, E, M
3
TA = +25°C
C, E, M
3
TA = TMIN to TMAX
C, E, M
5
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
V+ = 16.5V, V- = -16.5V
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
0.5
2
C, E
-0.50
-0.01
0.50
M
-0.25
-0.01
0.25
C, E
M
-6
-20
Ω
Ω
nA
20
-0.50
-0.01
0.50
M
-0.25
-0.01
0.25
-6
nA
6
M
-20
C, E
-1.0
-0.04
1.0
M
-0.4
-0.04
0.4
C, E
-20
20
-40.0
40.0
M
Ω
6
C, E
C, E
V
45
TA = +25°C
VCOM_ = ±15.5V,
VNC_ or VNO_ = +15.5V,
VCOM_ = ±15.5V,
VNC_ or VNO_ = ±15.5V,
V+ = 16.5V, V- = -16.5V
V+
C, E
20
________________________________________________________________________________________________
nA
Precision, Dual, High-Speed Analog Switches
(V+ = 15V, V- = -15V, VL = +5V, GND = 0V, VINH = +2.4V, VINL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP MAX
UNITS
(Note 2)
INPUT
Input Current with
Input Voltage High
IINH
Input Current with
Input Voltage Low
IINH
VIN_ = 2.4V, all others = 0.8V
-1.000 0.005
1.000
µA
VIN_ = 0.8V, all others = 2.4V
-1.000 0.005
1.000
µA
±20
V
SUPPLY
Power-Supply Range
Positive Supply Current
Negative Supply Current
Logic Supply Current
Ground Current
±4.5
I+
I-
IL
IGND
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
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 = +25°C
-1.00
TA = TMIN to TMAX
-5.00
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
TA = +25°C
-1.00
TA = TMIN to TMAX
-5.00
0.01
1.00
µA
5.00
-0.01
1.00
µA
5.00
0.01
1.00
µA
5.00
-0.01
1.00
µA
5.00
DYNAMIC
Turn-On Time
tON
Figure1
TA = +25°C
100
150
ns
Turn-Off Time
tOFF
Figure 1
TA = +25°C
60
100
ns
Break-Before-Make
Time Delay (Note 3)
tD
MAX303 only,
Figure 2
TA = +25°C
Charge Injection
(Note 3)
Q
CL = 10nF, VGEN = 0V,
RGEN = 0Ω,
Figure 3
TA = +25°C
10
OIRR
RL = 100Ω, CL = 5pF,
f = 1MHz, Figure 4
TA = +25°C
72
dB
RL = 50Ω, CL = 5pF,
f = 1MHz, Figure 5
TA = +25°C
90
dB
COFF
f = 1MHz, Figure 6
TA = +25°C
12
pF
COM Off Capacitance
CCOM(OFF)
f = 1MHz, Figure 6
TA = +25°C
12
pF
Channel-On Capacitance
CCOM(ON)
f = 1MHz, Figure 7
TA = +25°C
39
pF
Off Isolation (Note 5)
Crosstalk (Note 6)
Off Capacitance
10
20
ns
15
pC
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used on
this data sheet.
Note 3: Guaranteed by design.
Note 4: ∆RON = ∆RONMAX - ∆RONMIN. On resistance match between channels and flatness are guaranteed only with
specified voltages.
Note 5: See Figure 4. Off isolation = 20log10 VCOM/VNC orVNO, VCOM = output, VNC or VNO = input to off switch.
Note 6: Between any two switches. See Figure 5.
_________________________________________________________________________________________________ 3
MAX301/MAX303/MAX305
ELECTRICAL CHARACTERISTICS (continued)
________________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted).
30
A
B
25
20
C
20
15
MAX301-3
100
RON (Ω)
30
120
TA = +125°C
TA = +85°C
TA = +25°C
25
35
140
MAX301-2
35
RON (Ω)
V+ = 5V
80
60
TA = -55°C
D
15
V+ = 10V
40
10
V+ = 15V
V+ = 15V, V- = -15V
10
5
-10
10
0
-10
-20
20
0
10
0
20
5
15
10
VCOM (V)
VCOM (V)
VCOM (V)
ON RESISTANCE vs. VCOM
AND V- = OV
OFF LEAKAGE CURRENTS vs.
TEMPERATURE
ON LEAKAGE CURRENTS vs.
TEMPERATURE
100
MAX301-4
70
60
V+ = 16.5V
V- = -16.5V
VCOM = ±15V
VNC OR VNO = ±15V
10
OFF LEAKAGE (nA)
TA = +125°C
50
TA = +85°C
40
TA = +25°C
30
20
100
V+ = 16.5V
V- = -16.5V
VCOM = ±15V
VNC OR VNO = ±15V
10
1
.1
.01
20
MAX301-6
-20
V+ = 20V
20
5
MAX301-5
RON (Ω)
40
V+ = 5V, V- = -5V
V+ = 10V, V- = -10V
V+ = 15V, V- = -15V
V+ = 20V, V- = -20V
ON LEAKAGE (nA)
45
A:
B:
C:
D:
MAX301-1
50
ON RESISTANCE vs. VCOM
WITH V- = 0V
ON RESISTANCE vs. VCOM
AND TEMPERATURE
ON RESISTANCE vs. VCOM AND
POWER-SUPPLY VOLTAGE
RON (Ω)
1
.1
.01
.001
.001
V+ = 12V, V- = 0V
.0001
.0001
10
0
5
15
10
-55
20
VANA (V)
125
25
-55
SUPPLY CURRENT vs.
TEMPERATURE
10
20
1
I+, I-, IL (µA)
40
0
-20
-40
MAX301-8
100
MAX301-7
60
125
25
TEMPERATURE (°C)
TEMPERATURE (°C)
CHARGE INJECTION vs.
ANALOG VOLTAGE
Q (pC)
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
I+ AT V+ = 16.5V
.1
I- AT V- = -16.5V
.01
IL AT VL = 5V
.001
V+ = 15V, V- = -15V
-60
.0001
-20
-10
0
VCOM (V)
4
10
20
-55
25
TEMPERATURE (°C)
_______________________________________________________________________________________
125
Precision, Dual, High-Speed Analog Switches
MAX301 PIN
DIP/SO
LCC
1, 8
2, 10
NAME
COM1,
COM2
Drain (Analog Signal)
10, 15
NC1,
NC2
IN2, IN1
11
14
V+
Positive Supply-Voltage
Input—connected to
substrate
12
15
VL
Logic Supply-Voltage Input
13
17
GND
14
18
V-
Ground
Negative Supply Voltage
Input
9, 16
MAX303 PIN
N.C.
NAME
Not internally connected
Source (Analog Signal)
FUNCTION
LCC
1, 8, 3, 6
2, 4, 8, 10
1, 3, 6, 9,
11, 16
COM_
N.C.
Not internally connected
11
14
V+
Positive Supply-Voltage
Input—connected to
substrate
12
15
VL
Logic Supply-Voltage Input
13
17
GND
Ground
Negative Supply Voltage
Input
Digital Logic Inputs
14
18
V-
15, 10
19, 13
5, 7, 12,
20
IN1, IN2
NC_,
NO_
16, 9, 5, 4
MAX305 PIN
NAME
Drain (Analog Signal)
1, 8, 3, 6
2, 4, 8, 10
1, 3, 6, 9,
11, 16
COM_
N.C.
Not internally connected
11
14
V+
Positive Supply-Voltage
Input—connected to
substrate
12
15
VL
Logic Supply-Voltage Input
13
17
GND
14
18
V-
15, 10
19, 13
5, 7, 12,
20
IN1, IN2
NO_
Overvoltage Protection
Proper power-supply sequencing is recommended for all
CMOS devices. It is important not to 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 VL, 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 1). Adding 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 between V+ to V- should
not exceed +44V.
FUNCTION
LCC
16, 9, 5, 4
Logic Inputs
The MAX301/MAX303/MAX305 operate with a single positive supply or with bipolar supplies. The devices maintain
TTL compatibility with supplies anywhere in the ±4.5V to
±20V range as long as VL = +5V. If VL is connected to V+
or another supply at voltages other than +5V, the devices
will operate at CMOS-logic level inputs.
Source (Analog Signal)
DIP/SO
2-7
The MAX301/MAX303/MAX305 switches operate with
±4.5V to ±20V bipolar supplies and a +10V to +30V single supply. In either case, analog signals ranging from V+
to V- can be switched. The Typical Operating
Characteristics graphs show the typical on-resistance
variation with analog signal and supply voltage. The usual
on-resistance temperature coefficent is 0.5%/°C (typ).
Digital Logic Inputs
DIP/SO
2-7
Operation with Supply Voltages
Other than ±15V
FUNCTION
1, 3-9, 11,
16
5, 7, 12,
20
13, 19
2-7
__________Applications Information
V+
Drain (Analog Signal)
NO_
COM_
Vg
Ground
Negative Supply Voltage
Digital Logic Inputs
Source (Analog Signal)
V-
Figure 1. Overvoltage Protection Using Blocking Diodes
________________________________________________________________________________________
5
MAX301/MAX303/MAX305
____________________Pin Descriptions
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
+5V
+3V
LOGIC
INPUT
tOFF
VCOM
SWITCH
OUTPUT
VO
VCOM = +10V
for tON
0.9VO
VCOM = -10V
for tOFF
0V
tON
SWITCH
INPUT
-VANA
VL
SWITCH
INPUT
V+
NC
OR NO
COM
VO
IN1
LOGIC
INPUT
GND
V-
0V
-15V
V-
0.9VO
VO
RL = 1000Ω
CL = 35pF
V+
0V
SWITCH
INPUT
+15V
tr < 20ns
tf < 20ns
50%
REPEAT TEST FOR EACH SWITCH
LOGIC INPUT WAVEFORM IS INVERTED FOR
SWITCHES THAT HAVE THE OPPOSITE LOGIC
SENSE CONTROL
RL
RL = RON
VO = VCOM
FOR LOAD CONDITIONS, SEE Electrical Characteristics.
CL INCLUDES FIXTURE AND STRAY CAPACITANCE
Figure 2. Switching-Time Test Circuit
+5V
LOGIC
INPUT
+3V
VCOM_ = +10V
50%
VL
0V
V+
NO
VO1
COM_
VCOM
VO2
NC_
VO1
IN_
VO2
0V
CL1
RL2
LOGIC
INPUT
0.9VO
tD
RL1
COM_
0.9VO
0V
SWITCH
OUTPUT VCOM
SWITCH
OUTPUT
+15V
VCOM_ = +10V
GND
V-
0V
-15V
CL2
RL = 1000Ω
CL = 35pF
tD
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
LOGIC 0 INPUT.
Figure 3. Break-Before-Make Test Circuit
RGEN
+5V
+15V
VL
V+
COM
VGEN
∆VO
NC OR NO
VO
CL
GND
V-
0V
-15V
10nF
VO
INX
ON
OFF
Q = (∆VO)(CL)
Figure 4. Charge-Injection Test Circuit
6
_______________________________________________________________________________________
ON
Precision, Dual, High-Speed Analog Switches
+15V
+5V
V+
VL
SIGNAL
GENERATOR
MAX301/MAX303/MAX305
C
C
VCOM
0V, 2.4V
IN_
ANALYZER
CH A
CH B
FREQUENCY
TESTED
SIGNAL
GENERATOR
1 MHz
AUTOMATIC
SYNTHESIZER
NC OR NO
GND
ANALYZER
TRACKING
SPECTRUM
ANALYZER
C
V-
RL
OFF ISOLATION = 20LOG
-15V
100Ω
VCOM
VNC OR VNO
C = 5pF
Figure 5. Off Isolation
+15V
C
+5V
C
V+
VL
SIGNAL
GENERATOR
V
V+
50Ω
COM
NC OR NO
IN2
0V, 2.4V
0V, 2.4V
IN_
ANALYZER
CH A
CH B
NC OR NO
FREQUENCY
TESTED
SIGNAL
GENERATOR
1 MHz
AUTOMATIC
SYNTHESIZER
COM
GND
ANALYZER
TRACKING
SPECTRUM
ANALYZER
C
V-
RL
-15V
100Ω
C = 5pF
Figure 6. Crosstalk Test Circuit
+15V
C
+5V
C
V+
V+
COM
C
VL
+15V
+5V
V+
VL
C
COM_
IN_
0V, 2.4V
CAPACITANCE
METER
IN_
CAPACITANCE
METER
0V, 2.4V
NC OR NO
GND
V-
C
GND
-15V
Figure 7. Channel-Off Capacitance
V-
C
-15V
Figure 8. Channel-On Capacitance
_______________________________________________________________________________________
7
0°C to +70°C
16 Narrow SO
MAX303CJE
0°C to +70°C
16 CERDIP
19 IN1
MAX303CSE
TOP VIEW
20 NC1
PIN-PACKAGE
16 Plastic DIP
1 N.C.
TEMP.RANGE
0°C to +70°C
2 COM1
PART
MAX303CPE
_____Pin Configuration (continued)
3 N.C.
__Ordering Information (continued)
MAX303C/D
0°C to +70°C
Dice*
N.C. 4
MAX303EPE
-40°C to +85°C
16 Plastic DIP
N.C. 5
MAX303ESE
-40°C to +85°C
16 Narrow SO
N.C. 6
MAX303EJE
-40°C to +85°C
16 CERDIP
N.C. 7
15 VL
MAX303MJE
-55°C to +125°C
16 CERDIP
N.C. 8
14 V+
MAX303MLP
-55°C to +125°C
20 LCC**
MAX305CPE
0°C to +70°C
MAX305CSE
0°C to +70°C
16 Narrow SO
MAX305CJE
0°C to +70°C
16 CERDIP
18 V17 GND
MAX301
16 CERDIP
MAX305MLP
-55°C to +125°C
20 LCC**
IN2 13
-55°C to +125°C
19 IN1
16 CERDIP
MAX305MJE
NC2 12
16 Narrow SO
-40°C to +85°C
20 NO1
-40°C to +85°C
MAX305EJE
N.C. 11
MAX305ESE
1 N.C.
16 Plastic DIP
N.C. 9
-40°C to +85°C
COM2 10
0°C to +70°C
MAX305EPE
2 COM1
MAX305C/D
Dice*
18 V-
COM3 4
NC3 5
17 GND
N.C. 6
16 N.C.
MAX303
N.C. 11
NO2 12
IN2 13
1 N.C.
20 NO1
19 IN1
9
N.C.
14 V+
COM2 10
15 VL
COM4 8
2 COM1
NC4 7
3 N.C.
* Dice are tested at TA = +25°C only.
** Contact factory for availability.
16 N.C.
3 N.C.
16 Plastic DIP
COM3 4
18 V-
NO3 5
17 GND
N.C. 6
16 N.C.
MAX305
IN2 13
N.C.
NO2 12
14 V+
N.C. 11
15 VL
COM4 8
9
NO4 7
COM2 10
MAX301/MAX303/MAX305
Precision, Dual, High-Speed Analog Switches
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
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