19-1747; Rev 0; 7/00
3Ω Single SPST Analog Switches
________________General Description
The MAX4675/MAX4676 single analog switches feature
3Ω (max) on-resistance (R
ON
) and 0.7Ω flatness when
operating from dual ±5V supplies. These switches can
handle Rail-to-Rail
®
analog signals. Off-leakage current
is 0.1nA at T
A
= +25°C. The MAX4675/MAX4676 are
ideal in low-distortion applications and are the pre-
ferred solution over mechanical relays in automated
test equipment or applications where current switching
is required. They are more reliable than mechanical
relays, have low power requirements (<1µA), and are
available in a space-saving 6-pin SOT23 package.
The MAX4675 has a single normally open (NO) switch,
and the MAX4676 has a single normally closed (NC)
switch.
The MAX4675/MAX4676 operate from either a single
+2.7V to +5.5V or dual ±2.7V to ±5.5V supplies, mak-
ing them ideal for use in digital card applications and
single-ended 75Ω systems.
____________________________Features
o
3Ω (max) R
ON
o
0.7Ω (max) R
ON
Flatness
o
Dual ±2.7V to ±5.5V or Single +2.7V to +5.5V
Supply Range
o
Off-Isolation
-75dB at 1MHz, Dual Supply
-65dB at 1MHz, Single Supply
o
-3dB Bandwidth 250MHz
o
Rail-to-Rail Signal Handling
MAX4675/MAX4676
________________________Applications
Reed Relay Replacement
Test Equipment
Communications Systems
PBX, PABX Systems
Audio Signal Routing
Avionics
ADC Systems
Data-Acquisition Systems
_______________Ordering Information
PART
MAX4675EUT-T
MAX4676EUT-T
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
SOT
MARK
AAND
AANE
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
V+
1
6
IN
V+
1
6
IN
COM
2
5
NO
COM
2
5
NC
V-
3
MAX4675
SOT23
4
GND
V-
3
MAX4676
SOT23
4
GND
MAX4675
IN
SWITCH
0
1
OFF
ON
MAX4676
IN
SWITCH
0
1
ON
OFF
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________
Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
3Ω Single SPST Analog Switches
MAX4675/MAX4676
ABSOLUTE MAXIMUM RATINGS
V+ to GND ................................................................-0.3V to +6V
V- to GND .................................................................+0.3V to -6V
V+ to V- ..................................................................................12V
IN to GND .....................................................-0.3V to (V+ + 0.3V)
All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current (NO, NC, COM) ..............................±100mA
Peak Current (NO, NC, COM, pulsed at 1ms
(10% duty cycle).........................................................±200mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............691mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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:
Signals on NO, NC, COM, or IN exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maxi-
mum current rating.
ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES
(V+ = +5V ±10%, V- = -5V ±10%, 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.) (Notes 2, 3)
PARAMETER
ANALOG SWITCH
Input Voltage Range
V
COM
,
V
NO,
V
NC
R
ON
V+ = 4.5V, V- = -4.5V, I
COM
= 50mA; V
NO
or V
NC
=
±3.3V
V+ = 4.5V, V- = -4.5V,
I
COM
= 50mA; V
NO
or
V
NC
=
±
3.3V, 0
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-1
-10
-1
-10
-2
-20
0.1
0.1
0.1
0.4
V-
2.4
V+
3
4
0.7
1.0
1
nA
10
1
nA
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
10
2
nA
20
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
Ω
On-Resistance Flatness
(Note 4)
NC or NO Off-Leakage
Current
R
FLAT
Ω
I
N_(OFF)
V+ = 5.5V, V- = -5.5V,
T
A
= +25°C
V
COM
= 4.5V; V
NO
or V
NC
=
T
A
= T
MIN
to T
MAX
±4.5V
V+ = 5.5V, V- = -5.5V,
V
COM
= +4.5V; V
NO
or
V
NC
=
±4.5V
V+ = 5.5V, V- = -5.5V,
V
COM
=
±4.5V;
V
NO
or V
NC
=
±
4.5V or floating
T
A
= +25°C
COM Off-Leakage Current
I
COM(OFF)
COM On-Leakage Current
I
COM(ON)
LOGIC INPUT
Input Low Voltage
Input High Voltage
Input Leakage Current
DYNAMIC
Turn-On Time
t
ON
V+ = +4.5V, V- = -4.5V;
V
NO
or V
NC
= 3.3V,
R
L
= 300Ω, C
L
= 35pF, Figure 2
V+ = +4.5V, V- = -4.5V;
V
NO
or V
NC
= 3.3V,
R
L
= 300Ω, C
L
= 35pF, Figure 2
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
50
135
300
ns
375
110
ns
125
V
IL
V
IH
I
IN
2.4
-1
0.005
1
0.8
V
V
µA
Turn-Off Time
t
OFF
2
_______________________________________________________________________________________
3Ω Single SPST Analog Switches
ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES (continued)
(V+ = +5V ±10%, V- = -5V ±10%, 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.) (Notes 2, 3)
PARAMETER
Charge Injection
Off-Isolation
On-Channel Bandwidth
(-3dB)
NC or NO Off-Capacitance
COM Off-Capacitance
On-Capacitance
POWER SUPPLY
Supply Voltage
Positive Supply Current
Negative Supply Current
V+, V-
I+
I-
V
IN
= 0 or 5.5V, V+ =
5.5V, V- = -5.5V
V
IN
= 0 or 5.5V,
V+ = 5.5V, V- = -5.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
-1
-10
-0.002
±2.7
0.002
±5.5
1
10
V
µA
µA
SYMBOL
Q
V
ISO
BW
C
(N_OFF)
C
(COMOFF)
C
(ON)
CONDITIONS
R
GEN
= 0Ω, C
L
= 1nF,
V
GEN
= 0, Figure 3
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 4
R
S
= 50Ω, R
L
= 50Ω
f = 1MHz, Figure 5
f = 1MHz, Figure 5
f = 1MHz, Figure 5
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
MIN
TYP
87
-75
250
85
85
350
MAX
UNITS
pC
dB
MHz
pF
pF
pF
MAX4675/MAX4676
ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY
(V+ = +5V ±10%, 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.) (Notes 2, 3)
PARAMETER
ANALOG SWITCH
Input Voltage Range
V
COM
,
V
NO,
V
NC
R
ON
V+ = 4.5V; I
COM
= 50mA;
V
NO
or V
NC
= 3.3V
V+ = 4.5V; I
COM
= 50mA;
V
NO
or V
NC
= 1.5V, 2.5V,
3.3V
V+ = 5.5V; V
NO
or
V
NC
= 4.5V or 0;
V
COM
= 0 or 4.5V
V+ = 5.5V; V
NO
or
V
NC
= 4.5V or 0;
V
COM
= 0 or 4.5V
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
-1
-10
-1
-10
0.1
0.1
0.4
0
3.5
V+
5.75
7.5
1.6
2
1
nA
10
1
nA
10
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
Ω
On-Resistance Flatness
(Note 4)
NC or NO Off-Leakage
Current
R
FLAT
Ω
I
N_(OFF)
COM Off-Leakage Current
I
COM(OFF)
_______________________________________________________________________________________
3
3Ω Single SPST Analog Switches
MAX4675/MAX4676
ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY (continued)
(V+ = +5V ±10%, 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.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
V+ = 5.5V; V
NO
or
V
NC
= 0, 4.5V,
or floating;
V
COM
= 0 or 4.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
MIN
-2
-20
TYP
0.2
MAX
2
nA
20
UNITS
COM On-Leakage Current
I
COM (ON)
LOGIC INPUT
Input Low Voltage
Input High Voltage
Input Leakage Current
DYNAMIC
V+ = +4.5V;
V
NO
or V
NC
= +3.3V,
R
L
= 300Ω, C
L
= 35pF,
Figure 2
V+ = +4.5V; V
NO
or V
NC
=
+3.3V, R
L
= 300Ω,
C
L
= 35pF, Figure 2
R
GEN
= 0Ω, C
L
= 1nF,
V
GEN
= 2.5V, Figure 3
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 4
R
S
= 50Ω, R
L
= 50Ω
C
(N_OFF)
C
(COMOFF)
C
(ON)
V+
I+
V
IN
= 0 or 5V,
V+ = 5.5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
f = 1MHz, Figure 5
f = 1MHz, Figure 5
f = 1MHz, Figure 5
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
2.7
0.002
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
= +25°C
31
-65
150
85
85
350
5.5
1
10
55
350
700
ns
850
150
ns
160
pC
dB
MHz
pF
pF
pF
V
µA
V
IL
V
IH
I
IN
2.4
-1
0.005
1
0.8
V
V
µA
Turn-On Time
t
ON
Turn-Off Time
t
OFF
Charge Injection
Off-Isolation
On-Channel Bandwidth
(-3dB)
NC or NO Off-Capacitance
COM Off-Capacitance
On-Capacitance
POWER SUPPLY
Supply Voltage
Positive Supply Current
Q
V
ISO
Note 2:
Parameters are 100% tested at +25°C only and guaranteed by correlation through the full-rated temperature range.
Note 3:
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 4:
Flatness is defined as the difference between the maximum and minimum value of R
ON
as measured over the specified
analog signal ranges.
4
_______________________________________________________________________________________
3Ω Single SPST Analog Switches
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE
vs. V
COM
(DUAL SUPPLIES)
MAX4675 toc01
MAX4675/MAX4676
ON-RESISTANCE vs. V
COM
AND TEMPERATURE (DUAL SUPPLIES)
V+ = 5V
V- = -5V
MAX4675 toc02
ON-RESISTANCE
vs. V
COM
(SINGLE SUPPLY)
16
14
12
R
ON
(Ω)
V- = 0
MAX4675 toc03
4.0
3.5
3.0
R
ON
(Ω)
V =
±2.5V
2.7
2.5
2.3
R
ON
(Ω)
2.1
1.9
1.7
T
A
= 0°C
1.5
T
A
= -40°C
1
2
3
4
5
6
T
A
= +25°C
T
A
= +85°C
18
2.5
2.0
1.5
1.0
0.5
0
-6
-4
-2
V =
±3V
10
8
6
4
2
0
0
1
2
V+ = +2.7V
V+ = +3.3V
V+ = +5V
V =
±5V
0
V
COM
(V)
2
4
6
-6 -5 -4 -3 -2 -1 0
3
V
COM
(V)
4
5
6
V
COM
(V)
ON-RESISTANCE vs. V
COM
AND TEMPERATURE (SINGLE SUPPLY)
MAX4675 toc04
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4675 toc05
CHARGE INJECTION
vs. V
COM
90
80
70
MAX4675 toc06
5.0
T
A
= +25°C
4.5
4.0
R
ON
(Ω)
3.5
3.0
2.5
2.0
0
1
2
3
V
COM
(V)
4
5
6
T
A
= -40°C
T
A
= 0°C
V+ = +5V
T
A
= +85°C
14
ON/OFF-LEAKAGE CURRENT (nA)
12
10
100
V+ = 5V
V- = -5V
Q (pC)
8
6
4
2
0
50
70
I
COM(ON)
60
50
40
30
DUAL SUPPLIES
SINGLE SUPPLY
I
COM(OFF)
20
10
0
90
TEMPERATURE (°C)
110
130
-6
-4
-2
0
V
COM
(V)
2
4
6
TURN-ON/TURN-OFF TIMES
vs. V
COM
(DUAL SUPPLIES)
MAX4675 toc07
TURN-ON/TURN-OFF TIMES vs. V
COM
(SINGLE SUPPLY)
MAX4675 toc08
TURN-ON/TURN-OFF TIMES
vs. SUPPLY VOLTAGE (DUAL SUPPLIES)
V+ = IV-|
250
t
ON
200
150
100
t
OFF
MAX4675 toc09
300
250
200
150
100
50
0
-6
-4
-2
0
V
COM
(V)
2
4
6
t
OFFA
t
OFFB
t
ONA
A: V+ = +3.5V, V- = -3.5V
B: V+ = +5V, V- = -5V
800
700
600
t
ONB
A: V+ = +5.5V
B: V+ = +3V
300
t
ON
, t
OFF
(ns)
t
ON
, t
OFF
(ns)
400
300
200
100
0
0
1
2
3
4
t
OFFB
t
ONA
t
OFFA
50
0
5
6
7
8
9
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
V
COM
(V)
SUPPLY VOLTAGE (V+, V-)
_______________________________________________________________________________________
t
ON
, t
OFF
(ns)
t
ONB
500
5
Analog electronics
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