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 160
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.
Applications
Data Acquisition
Industrial and Process-Control Systems
Avionics
ATE Equipment
Redundant/Backup Systems
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 160 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
MAX451
0
/MAX452
0
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
________________________________________________________________ Maxim Integrated Products
1
TOP VIEW
( ) ARE FOR MAX4520.
6
5
4
1
2
3
NC (NO)
COM
V-
V+
MAX4510
MAX4520
GND
IN
SWITCHES SHOWN FOR LOGIC "0" INPUT.
ALL SWITCHES ARE OFF WITH POWER REMOVED.
SOT23
19-1542; Rev 0; 10/99
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
MAX4520EUT-T
-40°C to +85°C
6 SOT23-6
MAX4510EUT-T
-40°C to +85°C
6 SOT23-6
MAX4510EUA
-40°C to +85°C
8 µMAX
Pin Configurations continued at end of data sheet.
MAX4520EUA
-40°C to +85°C
8 µMAX
Pin Configurations/Truth Tables
IN
MAX4510
MAX4520
0
ON
OFF
1
OFF
ON
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.
--
TOP
MARK
AADK
AABZ
--
MAX451
0
/MAX452
0
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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)
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.
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.
(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
E
+25°C
-20
0.1
20
-200
200
NO or NC Input Leakage
Current, Supplies Off
I
NO
, I
NC
nA
V
NO
or V
NC
= ±40V,
V+ = 0, V- = 0
E
+25°C
-20
20
-200
200
NO or NC Input Leakage
Current, Supplies On
I
NO
, I
NC
nA
V
NO
or V
NC
= ±36V,
V
COM
=
+
10V
E
V
NO
or V
NC
= -36V
+25°C
8
11
13
-12
-10
-7
Clamp Output Current,
Supplies On
I
COM
mA
V
NO
or V
NC
= 36V
+25°C
-10
10
-200
200
COM Off-Leakage Current,
Supplies On
I
COM(OFF)
nA
V
NO
or V
NC
= ±36V
Applies with power off (Note 6)
E
-36
36
-40
40
Fault-Protected Analog
Signal Range
V
NO
, V
NC
V
Applies with power on (Note 6)
-20
20
E
-10
10
+25°C
E
-10
10
E
225
E
125
160
+25°C
-0.5
0.01
0.5
COM On-Leakage Current
(Notes 4, 5)
I
COM(ON)
nA
V
COM
= ±14V; V
NO
, V
NC
=
±14V or unconnected
+25°C
-0.5
0.01
0.5
I
NO(OFF),
I
NC(OFF)
nA
NO or NC Off-Leakage Current
(Notes 4, 5)
V
COM
= ±14V;
V
NO,
V
COM
=
+14V
COM Off-Leakage Current
(Notes 4, 5)
+25°C
Fault-Free Analog Signal Range
V
NO
, V
NC
V-
V+
V
E
Applies with power on or off
T
A
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
On-Resistance
R
ON
-0.5
0.01
0.5
I
COM(OFF)
nA
CONDITIONS
V
COM
= ±10V, I
COM
= 1mA
V
COM
= ±14V;
V
NO,
V
NC
=
+
14V
ANALOG SWITCH
FAULT (V+ = +15V, V- = -15V, unless otherwise noted.)
MAX451
0
/MAX452
0
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
_______________________________________________________________________________________
3
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)
175
10
E
E
V
IN
= 5V
50
100
+25°C
+25°C
-1
0.01
1
GND Supply Current
I
GND
µA
V
IN
= 0 or 15V
175
E
+25°C
50
100
V- Supply Current
I-
µA
V
IN
= 0 or 5V
250
E
+25°C
100
175
V+ Supply Current
I+
µA
V
IN
= 0 or 5V
E
±4.5
±20
Power-Supply Range
V+, V-
V
250
E
600
E
10
Fault Output Turn-On
Delay Time
ns
+25°C
V- - 0.4
V+ + 0.4
+25°C
Fault Trip Threshold
V
V
IN
= ±25V, R
L
= 10k
E
IN Input Logic Low
V
INL
V
0.8
+25°C
-62
Off-Isolation (Note 8)
VC
ISO
dB
R
L
= 50
, C
L
= 15pF,
V
N_
= 1V
RMS
, f = 1MHz, Figure 5
+25°C
10
COM On-Capacitance
C
COM(ON)
pF
f = 1MHz, Figure 4
+25°C
5
COM Off-Capacitance
C
COM(OFF)
pF
f = 1MHz, Figure 4
+25°C
10
NO or NC Off-Capacitance
C
N(OFF)
pF
f = 1MHz, Figure 4
+25°C
1.5
5
Charge Injection (Note 7)
Q
pC
C
L
= 1nF, V
NO
= 0,
R
S
= 0
, Figure 3
3
+25°C
ns
V
NO
or V
NC
= ±10V, R
L
= 2k
,
C
L
= 35pF, Figure 2
60
175
Turn-Off Time
t
OFF
ns
V
NO
or V
NC
= ±10V, R
L
= 2k
,
C
L
= 35pF, Figure 2
350
500
-5
5
E
E
+25°C
IN Input Current
I
INH
, I
INL
µA
V
IN
= 0.8V or 2.4V
-1
0.03
1
+25°C
E
IN Input Logic High
V
INH
V
2.4
T
A
+25°C
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
1
2.5
Clamp Output Resistance,
Supplies On
R
COM
k
Turn-On Time
t
ON
CONDITIONS
V
NO
or V
NC
= ±36V
2.5
Fault Recovery Time
µs
+25°C
V
IN
= ±25V, R
L
= 10k
LOGIC INPUT
SWITCH DYNAMIC CHARACTERISTICS
POWER SUPPLY
MAX451
0
/MAX452
0
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
4
_______________________________________________________________________________________
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)
-5
5
E
E
0.8
IN Input Logic Low
V
INL
V
E
2.4
IN Input Logic High
V
INH
V
+25°C
-1
0.03
1
IN Input Current
I
INH
, I
INL
µA
V
IN
= 0.8V or 2.4V
On-Resistance
0
V+
-40
40
-36
36
Fault-Protected Analog
Signal Range
V
NO
, V
NC
Applies with power off (Note 6)
V
E
Applies with power on (Note 6)
+25°C
-10
10
COM Off-Leakage Current,
Supply On
I
COM
nA
E
-200
200
V
NO
or V
NC
= ±36V
+25°C
2.4
5
Clamp Output Resistance,
Supply On
R
COM
k
V
NO
or V
NC
= 36V
+25°C
Clamp Output Current,
Supply On
I
COM
mA
2
3
5
V
NO
or V
NC
= 36V
+25°C
-20
0.1
20
NO or NC Input Leakage
Current, Supply Off
I
NO
, I
NC
nA
E
-200
200
V
NO
or V
NC
= ±40V,
V+ = 0, V- = 0
+25°C
-20
20
NO or NC Input Leakage
Current, Supply On
I
NO
, I
NC
nA
E
-200
200
V
NO
or V
NC
= ±36V,
V
COM
= 0
+25°C
-0.5
0.01
0.5
COM On-Leakage Current
(Notes 4, 5, 9)
I
COM(ON)
nA
E
-20
20
V
COM
= 1V, 10V; V
NO
, V
NC
=
1V, 10V, or unconnected
E
-10
10
E
-10
10
500
260
390
+25°C
T
A
E
+25°C
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
R
ON
-0.5
0.01
0.5
COM Off-Leakage Current
(Notes 4, 5, 9)
I
COM(OFF)
nA
+25°C
-0.5
0.01
0.5
NO or NC Off-Leakage Current
(Notes 4, 5, 9)
I
NO(OFF),
I
NC(OFF)
nA
V
COM
= 10V, 1V;
V
NO
, V
NC
= 1V, 10V
CONDITIONS
V
COM
= 10V,
I
COM
= 1mA
V
COM
= 1V, 10V;
V
NO
, V
NC
= 10V, 1V
Fault-Free Analog Signal Range
V
NO
, V
NC
V
E
Applies with power on or off
ANALOG SWITCH
FAULT
LOGIC INPUT
MAX451
0
/MAX452
0
Rail-to-Rail, Fault-Protected,
SPST Analog Switches
_______________________________________________________________________________________
5
Note 3:
Algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 4:
Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at T
A
= +25°C.
Note 5:
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.
Note 6:
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.
Note 7:
Guaranteed by design.
Note 8:
Off isolation = 20log
10
[ V
COM
/ (V
NC
or V
NO
) ], V
COM
= output, V
NC
or V
NO
= input to off switch.
Note 9:
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
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)
µA
175
125
E
E
E
175
+25°C
50
125
µA
V
IN
= 0 or 5V
+25°C
25
75
V- and GND Supply Current
I
GND
V
IN
= 0 or 12V
+25°C
50
125
V+ Supply Current
I+
µA
V
IN
= 0 or 5V
E
9
36
Power-Supply Range
V+
V
+25°C
-62
Off-Isolation (Note 8)
V
ISO
dB
R
L
= 50
, C
L
= 15pF,
V
IN
= 1V
RMS
, f = 1MHz, Figure 5
+25°C
22
COM On-Capacitance
C
COM(ON)
pF
V
COM
= V
NO
= 0,
f = 1MHz, Figure 4
+25°C
9
COM Off-Capacitance
C
COM(OFF)
pF
V
COM
= 0, f = 1MHz, Figure 4
+25°C
9
NO or NC Off-Capacitance
C
NO(OFF)
,
C
NC(OFF)
pF
f = 1MHz, Figure 4
+25°C
1
5
Charge Injection (Note 7)
Q
pC
C
L
= 1nF, V
NO
= 0,
R
S
= 0
, Figure 3
300
1000
E
E
T
A
+25°C
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
+25°C
60
200
Turn-Off Time
t
OFF
ns
V
NO
or V
NC
= 7V, R
L
= 2k
,
C
L
= 35pF, Figure 2
500
750
Turn-On Time
t
ON
ns
CONDITIONS
V
NO
or V
NC
= 7V, R
L
= 2k
,
C
L
= 35pF, Figure 2
SWITCH DYNAMIC CHARACTERISTICS
POWER SUPPLY
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