19-0159; Rev 1; 2/07
Precision, Dual, High-Speed Analog Switches
General Description
The MAX301/MAX303/MAX305 are precision, dual, high-
speed analog switches. The single-pole single-throw
(SPST) MAX301 and double-pole single-throw (DPST)
MAX305 dualswitches are normally open (NO). The sin-
gle-pole double-throw (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 (Δ3max). They also offer low leak-
age (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 volt-
age 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.
Features
♦
Low On-Resistance < 22Ω Typical (35Ω Max)
♦
Guaranteed Matched On-Resistance Between
Channels < 2Ω
♦
Guaranteed Flat On-Resistance over Full Analog
Signal Range
Δ3Ω
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
MAX301/MAX303/MAX305
Ordering Information
PART
MAX301CPE
MAX301CSE
MAX301CJE
MAX301C/D
MAX301EPE
MAX301ESE
MAX301EJE
MAX301MJE
MAX301MLP
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
-55°C to +125°C
PIN-
PACKAGE
16 Plastic DIP
16 Narrow SO
16 CERDIP
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP
16 CERDIP**
20LCC*
PKG
CODE
P16-1
S16-2
J16-3
—
P16-1
S16-2
J16-3
J16-3
L20-3
Applications
Sample-and-Hold Circuits
Test Equipment
Heads-Up Displays
Guidance and Control
Systems
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
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
COM2
1
2
3
4
5
6
7
8
16
NO1
15
IN1
14
V-
13
GND
COM1
N.C.
COM3
NC3
NC4
COM4
N.C.
COM2
1
2
3
4
5
6
7
8
16
NO1
15
IN1
14
V-
13
GND
COM1
N.C.
COM3
NO3
NO4
COM4
N.C.
COM2
1
2
3
4
5
6
7
8
16
NO1
15
IN1
14
V-
13
GND
MAX301
12
V
L
11
V+
10
IN2
9
NO2
MAX303
12
V
L
11
V+
10
IN2
9
NO2
MAX305
12
V
L
11
V+
10
IN2
9
NO2
DIP/SO
MAX301
LOGIC
SWITCH
0
1
OFF
ON
LOGIC
0
1
DIP/SO
MAX303
SWITCHES 1, 2 SWITCHES 3, 4
OFF
ON
ON
OFF
DIP/SO
LOGIC
0
1
MAX305
SWITCH
OFF
ON
LCC packages on last page.
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Precision, Dual, High-Speed Analog Switches
MAX301/MAX303/MAX305
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V-
V+.......................................................................................44V
GND ...................................................................................25V
V
L
.................................................................(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 (T
A
= +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, 10s) .................................+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
PARAMETER
SWITCH
Analog-Signal Range
V
ANA
SYMBOL
(V+ = 15V, V- = -15V, V
L
= +5V, GND = 0V, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
CONDITIONS
TEMP
MIN
TYP MAX
UNITS
RANGE
(Note 2)
V-
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
C, E
M
C, E
M
C, E, M
C, E, M
C, E, M
C, E, M
C, E
M
C, E
M
C, E
M
C, E
M
C, E
M
C, E
M
-0.50
-0.25
-6
-20
-0.50
-0.25
-6
-20
-1.0
-0.4
-20
-40.0
-0.04
-0.04
-0.01
-0.01
-0.01
-0.01
0.5
20
20
V+
35
30
55
45
2
3
3
5
0.50
0.25
6
20
0.50
0.25
6
20
1.0
0.4
20
40.0
nA
nA
nA
Ω
Ω
Ω
V
(Note 3)
I
(NC or NO)
= -10mA,
V
COM_
= ±10V
V
INH
= 2.4V, V
INL
= 0.8V
I
(NC or NO)
= -10mA,
V
COM_
= ±10V
V+ = 15V, V- = -15V
I
S
= -10mA
V
COM_
= ±5V
V+ = 15V, V- = -15V
V
COM_
=
+15.5V,
V
NC_ or
V
NO_
= ±15.5V,
V+ = 16.5V, V- = -16.5V
On-Resistance
R
ON
On-Resistance Match
Between Channels (Note 4)
On-Resistance Flatness
(Note 4)
R
ON
R
ON
NC or NO
Off-Leakage Current
NC_
(OFF)
or
NO_
(OFF)
COM Off-Leakage Current
COM
OFF
V
COM_
= ±15.5V,
V
NC_ or
V
NO_
=
+
15.5V,
V+ = 16.5V, V- = -16.5V
COM On-
Leakage Current
COM
ON
V
COM_
= ±15.5V,
V
NC_ or
V
NO_
= ±15.5V,
V+ = 16.5V, V- = -16.5V
2
________________________________________________________________________________________________
Precision, Dual, High-Speed Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
PARAMETER
INPUT
Input Current with
Input-Voltage High
Input Current with
Input-Voltage Low
SUPPLY
Power-Supply Range
Positive Supply Current
Negative Supply Current
Logic-Supply Current
Ground Current
DYNAMIC
Turn-On Time
Turn-Off Time
Break-Before-Make
Time Delay (Note 3)
Charge Injection
(Note 3)
Off-Isolation (Note 5)
Crosstalk (Note 6)
Off-Capacitance
COM Off-Capacitance
Channel-On Capacitance
C
OF
C
COM(OFF
C
COM(ON)
t
ON
t
OFF
t
D
Q
OIRR
Figure1
Figure 1
MAX303 only,
Figure 2
C
L
= 10nF, V
GEN
= 0V,
R
GEN
= 0Ω,
Figure 3
R
L
= 100Ω, C
L
= 5pF,
f = 1MHz, Figure 4
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 5
f = 1MHz, Figure 6
f = 1MHz, Figure 6
f = 1MHz, Figure 7
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
10
100
60
20
10
72
90
12
12
39
15
150
100
ns
ns
ns
pC
dB
dB
pF
pF
pF
I+
I-
I
L
I
GND
All channels on or off,
V
IN
= 0V or 5V,
V+ = 16.5V, V- = -16.5V
All channels on or off,
V
IN
= 0V or 5V,
V+ = 16.5V, V- = -16.5V
All channels on or off,
V
IN
= 0V or 5V,
V+ = 16.5V, V- = -16.5V
All channels on or off,
V
IN
= 0V or 5V,
V+ = 16.5V, V- = -16.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
±4.5
-1.00
-5.00
-1.00
-5.00
-1.00
-5.00
-1.00
-5.00
-0.01
0.01
-0.01
0.01
±20
1.00
5.00
1.00
5.00
1.00
5.00
1.00
5.00
V
µA
µA
µA
µA
I
INH
I
INH
V
IN
_ = 2.4V, all others = 0.8V
V
IN
_ = 0.8V, all others = 2.4V
-1.000 0.005
-1.000 0.005
1.000
1.000
µA
µA
SYMBOL
MAX301/MAX303/MAX305
(V+ = 15V, V- = -15V, V
L
= +5V, GND = 0V, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
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 on
this data sheet.
Note 3:
Guaranteed by design.
Note 4:
∆R
ON
=
∆R
ON
MAX -
∆R
ON
MIN. On resistance match between channels and flatness are guaranteed only with
specified voltages.
Note 5:
See Figure 4. Off isolation = 20log
10
V
COM
/V
NC or
V
NO
, V
COM
= output, V
NC or
V
NO
= input to off switch.
Note 6:
Between any two switches. See Figure 5.
_________________________________________________________________________________________________
3
Precision, Dual, High-Speed Analog Switches
MAX301/MAX303/MAX305
________________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted).
ON-RESISTANCE vs. V
COM
AND
POWER-SUPPLY VOLTAGE
50
45
40
R
ON
(Ω)
35
30
25
20
15
10
5
-20
-10
0
V
COM
(V)
10
20
5
-20
-10
0
V
COM
(V)
10
20
C
D
10
V+ = 15V, V- = -15V
20
0
5
10
V
COM
(V)
15
20
40
B
A:
B:
C:
D:
V+ = 5V, V- = -5V
V+ = 10V, V- = -10V
V+ = 15V, V- = -15V
V+ = 20V, V- = -20V
MAX301-1
ON-RESISTANCE vs. V
COM
AND TEMPERATURE
MAX301-2
ON-RESISTANCE vs. V
COM
WITH V- = 0V
MAX301-3
35
30
25
R
ON
(Ω)
20
15
T
A
= -55°C
T
A
= +125°C
T
A
= +85°C
T
A
= +25°C
140
120
100
R
ON
(Ω)
80
60
V+ = 10V
V+ = 15V
V+ = 20V
A
V+ = 5V
ON-RESISTANCE vs. V
COM
AND V- = OV
MAX301-4
OFF-LEAKAGE CURRENTS vs.
TEMPERATURE
V+ = 16.5V
V- = -16.5V
V
COM
= ±15V
V
NC OR
V
NO
= ±15V
MAX301-5
ON-LEAKAGE CURRENTS vs.
TEMPERATURE
V+ = 16.5V
V- = -16.5V
V
COM
= ±15V
V
NC OR
V
NO
= ±15V
MAX301-6
70
60
T
A
= +125°C
100
10
OFF LEAKAGE (nA)
1
.1
.01
.001
100
10
ON LEAKAGE (nA)
1
.1
.01
.001
.0001
50
R
ON
(Ω)
40
30
20
V+ = 12V, V- = 0V
10
0
5
10
V
ANA
(V)
T
A
= +85°C
T
A
= +25°C
.0001
15
20
-55
25
TEMPERATURE (°C)
125
-55
25
TEMPERATURE (°C)
125
CHARGE INJECTION vs.
ANALOG VOLTAGE
MAX301-7
SUPPLY CURRENT vs.
TEMPERATURE
MAX301-8
60
40
20
Q (pC)
0
-20
-40
V+ = 15V, V- = -15V
-60
-20
-10
0
V
COM
(V)
10
100
10
1
.1
.01
.001
.0001
I+, I-, I
L
(µA)
I+ AT V+ = 16.5V
I- AT V- = -16.5V
I
L
AT V
L
= 5V
20
-55
25
TEMPERATURE (°C)
125
4
_______________________________________________________________________________________
Precision, Dual, High-Speed Analog Switches
____________________Pin Descriptions
MAX301 PIN
DIP/SO
1, 8
2-7
9, 16
10, 15
11
12
13
14
LCC
2, 10
1, 3-9, 11,
16
5, 7, 12,
20
13, 19
14
15
17
18
NAME
COM1,
COM2
N.C.
NC1,
NC2
IN2, IN1
V+
V
L
GND
V-
NAME
COM_
N.C.
V+
V
L
GND
V-
IN1, IN2
NC_,
NO_
NAME
COM_
N.C.
V+
V
L
GND
V-
IN1, IN2
NO_
FUNCTION
Drain (Analog Signal)
Not internally connected
Source (Analog Signal)
Digital Logic Inputs
Positive Supply-Voltage
Input—connected to
substrate
Logic Supply-Voltage Input
Ground
Negative Supply Voltage
Input
FUNCTION
Drain (Analog Signal)
Not internally connected
Positive Supply-Voltage
Input—connected to
substrate
Logic Supply-Voltage Input
Ground
Negative Supply Voltage
Input
Digital Logic Inputs
Source (Analog Signal)
FUNCTION
Drain (Analog Signal)
Not internally connected
Positive Supply-Voltage
Input—connected to
substrate
Logic Supply-Voltage Input
Ground
Negative Supply Voltage
Digital Logic Inputs
Source (Analog Signal)
V-
NO_
COM_
V+
__________Applications Information
The MAX301/MAX303/MAX305 switches operate with
±4.5V to ±20V bipolar supplies and a +10V to +30V sin-
gle 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).
The MAX301/MAX303/MAX305 operate with a single pos-
itive supply or with bipolar supplies. The devices maintain
TTL compatibility with supplies anywhere in the ±4.5V to
±20V range as long as V
L
= +5V. If V
L
is connected to V+
or another supply at voltages other than +5V, the devices
will operate at CMOS-logic level inputs.
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 rat-
ings 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 char-
acteristics are unaffected. Device operation is
unchanged, and the difference between V+ to V- should
not exceed +44V.
MAX301/MAX303/MAX305
Operation with Supply Voltages
Other than ±15V
Logic Inputs
MAX303 PIN
DIP/SO
1, 8, 3, 6
2-7
11
12
13
14
15, 10
16, 9, 5, 4
LCC
2, 4, 8, 10
1, 3, 6, 9,
11, 16
14
15
17
18
19, 13
5, 7, 12,
20
LCC
2, 4, 8, 10
1, 3, 6, 9,
11, 16
14
15
17
18
19, 13
5, 7, 12,
20
Overvoltage Protection
MAX305 PIN
DIP/SO
1, 8, 3, 6
2-7
11
12
13
14
15, 10
16, 9, 5, 4
V
g
Figure 1. Overvoltage Protection Using Blocking Diodes
________________________________________________________________________________________
5
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