19-1542; Rev 0; 10/99
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
General Description
The MAX4510/MAX4520 single-pole/single-throw (SPST),
fault-protected analog switches feature a fault-protected
input and Rail-to-Rail
®
signal-handling capability. The
normally open (NO) and normally closed (NC) terminals
are protected from overvoltage faults up to 36V during
power-on and 44V with power off. During a fault condi-
tion, the switch input terminal (NO or NC) becomes an
open circuit; only nanoamperes of leakage current flow
from the fault source, and the switch output (COM) fur-
nishes up to 13mA of the appropriate polarity supply
voltage to the load. This ensures unambiguous rail-to-rail
outputs when a fault begins and ends.
On-resistance is 160Ω max. The off-leakage current is
only 0.5nA at +25°C and 10nA at +85°C. The MAX4510
is a normally closed switch, while the MAX4520 is a
normally open switch. These CMOS switches operate
with dual power supplies ranging from ±4.5V to ±20V
or a single supply between +9V and +36V.
The digital input has +0.8V and +2.4V logic thresholds,
ensuring both TTL- and CMOS-logic compatibility when
using ±15V or a single +12V supply. The MAX4510/
MAX4520 are available in 6-pin SOT23 and 8-pin µMAX
packages.
Features
o
±40V Fault Protection with Power Off
±36V Fault Protection with ±15V Supplies
o
Switch is Off with Power Removed
o
Rail-to-Rail Signal Handling
o
160Ω max Signal Paths with ±15V Supplies
o
On-Switch Turns Off with Overvoltage
o
0.5nA Off-Leakage Current
o
Output Clamped to Appropriate Supply Voltage
During Fault Condition; No Transition Glitch
o
No Power-Supply Sequencing Required
o
±4.5V to ±20V Dual Supplies
+9V to +36V Single Supply
o
Low Power Consumption: <2mW
o
TTL- and CMOS-Compatible Logic Inputs with
Single +9V to +15V or ±15V Supplies
MAX4510/MAX4520
Pin Configurations/Truth Tables
Applications
Data Acquisition
Industrial and Process-Control Systems
Avionics
ATE Equipment
Redundant/Backup Systems
V-
2
V+
1
6
NC (NO)
TOP VIEW
MAX4510
MAX4520
5
COM
IN
3
4
GND
Ordering Information
( ) ARE FOR MAX4520.
SOT23
PART
TEMP. RANGE
PIN-
PACKAGE
6 SOT23-6
8 µMAX
6 SOT23-6
8 µMAX
TOP
MARK
AABZ
—
AADK
—
SWITCHES SHOWN FOR LOGIC "0" INPUT.
ALL SWITCHES ARE OFF WITH POWER REMOVED.
IN
0
1
MAX4510
ON
OFF
MAX4520
OFF
ON
MAX4510EUT-T
-40°C to +85°C
MAX4510EUA
MAX4520EUA
-40°C to +85°C
-40°C to +85°C
MAX4520EUT-T
-40°C to +85°C
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
MAX4510/MAX4520
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
V+ ........................................................................-0.3V to +44.0V
V- .........................................................................-44.0V to +0.3V
V+ to V-................................................................-0.3V to +44.0V
COM, IN (Note 1)..................................(V- - 0.3V) to (V+ + 0.3V)
NC, NO (Note 2) .....................................(V+ - 36V) to (V- + 36V)
NC, NO to COM.......................................................-36V to +36V
Continuous Current into Any Terminal..............................±30mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle)...................................±50mA
Continuous Power Dissipation (T
A
= +70°C) (Note 2)
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) .........696mW
8-Pin µMAX (derate 4.10mW/°C above +70°C) ............330mW
Operating Temperature Ranges
MAX45_0EUT....................................................-40°C to +85°C
MAX45_0EUA ...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
COM and IN pins are not fault protected. Signals on COM or IN exceeding V+ or V- are clamped by internal diodes. Limit
forward diode current to maximum current rating.
Note 2:
NC and NO pins are fault protected. Signals on NC or NO exceeding -36V to +36V may damage the device. These limits
apply with power applied to V+ or V-, or ±40V with V+ = V- = 0.
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—Dual Supplies
(
V+ = +15V, V- = -15V, GND = 0, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
=
+25°C.) (Note 3)
PARAMETER
ANALOG SWITCH
Fault-Free Analog Signal Range
On-Resistance
NO or NC Off-Leakage Current
(Notes 4, 5)
COM Off-Leakage Current
(Notes 4, 5)
COM On-Leakage Current
(Notes 4, 5)
V
NO
, V
NC
R
ON
I
NO(OFF),
I
NC(OFF)
I
COM(OFF)
I
COM(ON)
Applies with power on or off
V
COM
= ±10V, I
COM
= 1mA
V
COM
= ±14V;
–
V
NO,
V
COM
=
+14V
V
COM
= ±14V;
–
V
NO,
V
NC
=
+
14V
V
COM
= ±14V; V
NO
, V
NC
=
±14V or unconnected
Applies with power on (Note 6)
Applies with power off (Note 6)
V
NO
or V
NC
= ±36V
V
NO
or V
NC
= ±36V,
–
V
COM
=
+
10V
V
NO
or V
NC
= ±40V,
V+ = 0, V- = 0
V
NO
or V
NC
= 36V
V
NO
or V
NC
= -36V
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
-0.5
-10
-0.5
-10
-0.5
-20
-36
-40
-10
-200
-20
-200
-20
-200
8
-12
11
-10
0.1
0.01
0.01
0.01
V-
125
V+
160
225
0.5
10
0.5
10
0.5
20
36
40
10
200
20
200
20
200
13
-7
V
Ω
nA
nA
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
FAULT
(V+ = +15V, V- = -15V, unless otherwise noted.)
Fault-Protected Analog
Signal Range
COM Off-Leakage Current,
Supplies On
NO or NC Input Leakage
Current, Supplies On
NO or NC Input Leakage
Current, Supplies Off
Clamp Output Current,
Supplies On
V
NO
, V
NC
I
COM(OFF)
I
NO
, I
NC
I
NO
, I
NC
I
COM
E
+25°C
E
+25°C
E
+25°C
E
+25°C
V
nA
nA
nA
mA
2
_______________________________________________________________________________________
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(
V+ = +15V, V- = -15V, V
IH
= 2.4V, V
IL
= 0.8V, GND = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
=
+25°C.) (Note 3)
PARAMETER
Clamp Output Resistance,
Supplies On
Fault Trip Threshold
Fault Output Turn-On
Delay Time
Fault Recovery Time
LOGIC INPUT
IN Input Logic High
IN Input Logic Low
IN Input Current
V
INH
V
INL
I
INH
, I
INL
V
IN
= 0.8V or 2.4V
E
E
+25°C
E
+25°C
E
+25°C
E
+25°C
+25°C
+25°C
+25°C
+25°C
1.5
10
5
10
-62
60
-1
-5
350
0.03
2.4
0.8
1
5
500
600
175
250
5
V
V
µA
V
IN
= ±25V, R
L
= 10kΩ
V
IN
= ±25V, R
L
= 10kΩ
SYMBOL
R
COM
CONDITIONS
V
NO
or V
NC
= ±36V
T
A
+25°C
E
+25°C
+25°C
+25°C
V- - 0.4
10
2.5
MIN
TYP
1
MAX
2.5
3
V+ + 0.4
UNITS
kΩ
V
ns
µs
MAX4510/MAX4520
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Charge Injection (Note 7)
NO or NC Off-Capacitance
COM Off-Capacitance
COM On-Capacitance
Off-Isolation (Note 8)
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V- Supply Current
V+, V-
I+
I-
V
IN
= 0 or 5V
V
IN
= 0 or 5V
V
IN
= 0 or 15V
GND Supply Current
I
GND
V
IN
= 5V
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
50
-1
0.01
50
±4.5
100
±20
175
250
100
175
1
10
100
175
µA
V
µA
µA
t
ON
t
OFF
Q
C
N(OFF)
C
COM(OFF)
C
COM(ON)
VC
ISO
V
NO
or V
NC
= ±10V, R
L
= 2kΩ,
C
L
= 35pF, Figure 2
V
NO
or V
NC
= ±10V, R
L
= 2kΩ,
C
L
= 35pF, Figure 2
C
L
= 1nF, V
NO
= 0,
R
S
= 0Ω, Figure 3
f = 1MHz, Figure 4
f = 1MHz, Figure 4
f = 1MHz, Figure 4
R
L
= 50Ω, C
L
= 15pF,
V
N_
= 1V
RMS
, f = 1MHz, Figure 5
ns
ns
pC
pF
pF
pF
dB
_______________________________________________________________________________________
3
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
MAX4510/MAX4520
ELECTRICAL CHARACTERISTICS—Single +12V Supply
(V+ = +12V, V- = 0, GND = 0, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Note 3)
PARAMETER
ANALOG SWITCH
Fault-Free Analog Signal Range
On-Resistance
NO or NC Off-Leakage Current
(Notes 4, 5, 9)
COM Off-Leakage Current
(Notes 4, 5, 9)
COM On-Leakage Current
(Notes 4, 5, 9)
FAULT
Fault-Protected Analog
Signal Range
COM Off-Leakage Current,
Supply On
NO or NC Input Leakage
Current, Supply On
NO or NC Input Leakage
Current, Supply Off
Clamp Output Current,
Supply On
Clamp Output Resistance,
Supply On
LOGIC INPUT
IN Input Logic High
IN Input Logic Low
IN Input Current
V
INH
V
INL
I
INH
, I
INL
V
IN
= 0.8V or 2.4V
E
E
+25°C
E
-1
-5
0.03
2.4
0.8
1
5
V
V
µA
V
NO
, V
NC
I
COM
I
NO
, I
NC
I
NO
, I
NC
I
COM
R
COM
Applies with power on (Note 6)
Applies with power off (Note 6)
V
NO
or V
NC
= ±36V
V
NO
or V
NC
= ±36V,
V
COM
= 0
V
NO
or V
NC
= ±40V,
V+ = 0, V- = 0
V
NO
or V
NC
= 36V
V
NO
or V
NC
= 36V
E
+25°C
E
+25°C
E
+25°C
E
+25°C
+25°C
-36
-40
-10
-200
-20
-200
-20
-200
2
3
2.4
0.1
36
40
10
200
20
200
20
200
5
5
V
nA
nA
nA
mA
kΩ
V
NO
, V
NC
R
ON
I
NO(OFF),
I
NC(OFF)
I
COM(OFF)
I
COM(ON)
Applies with power on or off
V
COM
= 10V,
I
COM
= 1mA
V
COM
= 10V, 1V;
V
NO
, V
NC
= 1V, 10V
V
COM
= 1V, 10V;
V
NO
, V
NC
= 10V, 1V
V
COM
= 1V, 10V; V
NO
, V
NC
=
1V, 10V, or unconnected
E
+25°C
E
+25°C
E
+25°C
E
+25°C
E
-0.5
-10
-0.5
-10
-0.5
-20
0.01
0.01
0.01
0
260
V+
390
500
0.5
10
0.5
10
0.5
20
V
Ω
nA
nA
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
4
_______________________________________________________________________________________
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
(V+ = +12V, V- = 0, GND = 0, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Note 3)
PARAMETER
SYMBOL
CONDITIONS
V
NO
or V
NC
= 7V, R
L
= 2kΩ,
C
L
= 35pF, Figure 2
V
NO
or V
NC
= 7V, R
L
= 2kΩ,
C
L
= 35pF, Figure 2
C
L
= 1nF, V
NO
= 0,
R
S
= 0Ω, Figure 3
f = 1MHz, Figure 4
V
COM
= 0, f = 1MHz, Figure 4
V
COM
= V
NO
= 0,
f = 1MHz, Figure 4
R
L
= 50Ω, C
L
= 15pF,
V
IN
= 1V
RMS
, f = 1MHz, Figure 5
T
A
+25°C
E
+25°C
E
+25°C
+25°C
+25°C
+25°C
+25°C
1
9
9
22
-62
60
MIN
TYP
500
MAX
750
1000
200
300
5
UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Charge Injection (Note 7)
NO or NC Off-Capacitance
COM Off-Capacitance
COM On-Capacitance
Off-Isolation (Note 8)
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V+
I+
V
IN
= 0 or 5V
V
IN
= 0 or 12V
V- and GND Supply Current
I
GND
V
IN
= 0 or 5V
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
E
+25°C
E
+25°C
E
+25°C
E
50
25
9
50
36
125
175
75
125
125
175
V
µA
µA
µA
t
ON
t
OFF
Q
C
NO(OFF)
,
C
NC(OFF)
C
COM(OFF)
C
COM(ON)
V
ISO
ns
ns
pC
pF
pF
pF
dB
MAX4510/MAX4520
Algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at T
A
= +25°C.
SOT packages are 100% tested at +25°C. Limits at the maximum-rated temperature are guaranteed by design and corre-
lation limits at +25°C. Leakage tests for the SOT package are typical only.
NC and NO pins are fault protected. Signals on NC or NO exceeding -36V to +36V may damage the device. These limits
apply with power applied to V+ or V-, or ±40V with V+ = V- = 0.
Guaranteed by design.
Off isolation = 20log
10
[ V
COM
/ (V
NC
or V
NO
) ], V
COM
= output, V
NC
or V
NO
= input to off switch.
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
_______________________________________________________________________________________
5
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