________________General Description
The MAX4675/MAX4676 single analog switches feature
3Ω(max) on-resistance (RON) and 0.7Ωflatness when
operating from dual ±5V supplies. These switches can
handle Rail-to-Rail®analog signals. Off-leakage current
is 0.1nA at TA= +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 75Ωsystems.
________________________Applications
Reed Relay Replacement
Test Equipment
Communications Systems
PBX, PABX Systems
Audio Signal Routing
Avionics
ADC Systems
Data-Acquisition Systems
____________________________Features
♦3Ω(max) RON
♦0.7Ω(max) RON Flatness
♦Dual ±2.7V to ±5.5V or Single +2.7V to +5.5V
Supply Range
♦Off-Isolation
-75dB at 1MHz, Dual Supply
-65dB at 1MHz, Single Supply
♦-3dB Bandwidth 250MHz
♦Rail-to-Rail Signal Handling
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
________________________________________________________________ Maxim Integrated Products 1
19-1747; Rev 0; 7/00
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.
_______________Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
PART TEMP.
RANGE
PIN-
PACKAGE
SOT
MARK
MAX4675EUT-T -40°C to +85°C 6 SOT23-6 AAND
MAX4676EUT-T -40°C to +85°C 6 SOT23-6 AANE
TOP VIEW
MAX4675
IN SWITCH
0
1
OFF
ON
COM
GNDV-
16IN
5NO
V+
MAX4675
SOT23
2
34
MAX4676
IN SWITCH
0
1
ON
OFF
COM
GNDV-
16IN
5NC
V+
MAX4676
SOT23
2
34
Pin Configurations/Functional Diagrams/Truth Tables
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES
(V+ = +5V ±10%, V- = -5V ±10%, GND = 0, VIH = +2.4V, VIL = 0.8V, TA= TMIN to TMAX, unless otherwise noted. Typical values are
at TA= +25°C.) (Notes 2, 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.
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 (TA= +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
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.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SWITCH
Input Voltage Range VCOM,
VNO
,
VNC V- V+ V
TA= +25°C 2.4 3
On-Resistance RON
V+ = 4.5V, V- = -4.5V, ICOM
= 50mA; VNO or VNC =
±3.3V TA= TMIN to TMAX 4
Ω
TA= +25°C 0.4 0.7
On-Resistance Flatness
(Note 4) RFLAT
V+ = 4.5V , V - = - 4.5V ,
ICOM = 50m A; V
NO or
VNC =±3.3V , 0 TA= TMIN to TMAX 1.0
Ω
TA= +25°C -1 0.1 1
NC or NO Off-Leakage
Current IN_
(
OFF
)
V+ = 5.5V, V- = -5.5V,
VCOM = 4.5V; VNO or VNC =
±4.5V TA= TMIN to TMAX -10 10
nA
TA= +25°C -1 0.1 1
COM Off-Leakage Current ICOM
(
OFF
)
V+ = 5.5V, V- = -5.5V,
VCOM = +4.5V; VNO or
VNC =±4.5V TA= TMIN to TMAX -10 10
nA
TA= +25°C -2 0.1 2
COM On-Leakage Current ICOM
(
ON
)
V+ = 5.5V, V- = -5.5V,
VCOM =±4.5V; VNO or VNC
=± 4.5V or floating TA= TMIN to TMAX -20 20
nA
LOGIC INPUT
Input Low Voltage VIL 0.8 V
Input High Voltage VIH 2.4 V
Input Leakage Current IIN -1 0.005 1 µA
DYNAMIC
TA= +25°C 135 300
Turn-On Time tON
V+ = +4.5V, V- = -4.5V;
VNO or VNC = 3.3V,
RL= 300Ω, CL= 35p F, Fig ure 2 TA= TMIN to TMAX 375
ns
TA= +25°C 50 110
Turn-Off Time tOFF
V+ = +4.5V, V- = -4.5V;
VNO or VNC = 3.3V,
RL= 300Ω, CL= 35p F, Fig ure 2 TA= TMIN to TMAX 125
ns
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—DUAL SUPPLIES (continued)
(V+ = +5V ±10%, V- = -5V ±10%, GND = 0, VIH = +2.4V, VIL = 0.8V, TA= TMIN to TMAX, unless otherwise noted. Typical values are
at TA= +25°C.) (Notes 2, 3)
ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY
(V+ = +5V ±10%, V- = 0, GND = 0, VIH = +2.4V, VIL = 0.8V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at
TA= +25°C.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SWITCH
Input Voltage Range VCOM,
VNO
,
VNC 0 V+ V
TA= +25°C 3.5 5.75
On-Resistance RON V+ = 4.5V ; ICOM = 50m A;
VNO or VNC = 3.3V TA= TMIN to TMAX 7.5
Ω
TA= +25°C 0.4 1.6
On-Resistance Flatness
(Note 4) RFLAT
V+ = 4.5V ; ICOM = 50m A;
VNO or V
NC = 1.5V , 2.5V ,
3.3V TA= TMIN to TMAX 2
Ω
TA= +25°C -1 0.1 1
NC or NO Off-Leakage
Current IN_
(
OFF
)
V+ = 5.5V; VNO or
VNC = 4.5V or 0;
VCOM = 0 or 4.5V TA= TMIN to TMAX -10 10
nA
TA= +25°C -1 0.1 1
COM Off-Leakage Current ICOM
(
OFF
)
V+ = 5.5V; VNO or
VNC = 4.5V or 0;
VCOM = 0 or 4.5V TA= TMIN to TMAX -10 10
nA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Charge Injection Q RGEN = 0Ω, CL= 1nF,
VGEN = 0, Figure 3 TA= +25°C87pC
Off-Isolation VISO RL= 50Ω, CL= 5pF,
f = 1MHz, Figure 4 TA= +25°C -75 dB
On-Channel Bandwidth
(-3dB) BW RS= 50Ω, RL= 50Ω250 MHz
NC or NO Off-Capacitance C
(
N_OFF
)
f = 1MHz, Figure 5 TA= +25°C85pF
COM Off-Capacitance C
(
COM OFF
)
f = 1MHz, Figure 5 TA= +25°C85pF
On-Capacitance C(ON) f = 1MHz, Figure 5 TA= +25°C 350 pF
POWER SUPPLY
Supply Voltage V+, V- ±2.7 ±5.5 V
TA= +25°C 0.002 1
Positive Supply Current I+ VIN = 0 or 5.5V, V+ =
5.5V, V- = -5.5V TA= TMIN to TMAX 10 µA
TA= +25°C -1 -0.002
Negative Supply Current I- VIN = 0 or 5.5V,
V+ = 5.5V, V- = -5.5V TA= TMIN to TMAX -10 µA
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
4 _______________________________________________________________________________________
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 RON as measured over the specified
analog signal ranges.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TA= +25°C -2 0.2 2
COM On-Leakage Current ICOM
(
ON
)
V+ = 5.5V; VNO or
VNC = 0, 4.5V,
or floating;
VCOM = 0 or 4.5V TA= TMIN to TMAX -20 20
nA
LOGIC INPUT
Input Low Voltage VIL 0.8 V
Input High Voltage VIH 2.4 V
Input Leakage Current IIN -1 0.005 1 µA
DYNAMIC
TA= +25°C 350 700
Turn-On Time tON
V+ = + 4.5V ;
VNO or VNC = +3.3V,
RL= 300Ω, CL= 35p F,
Fi gur e 2
TA= TMIN to
TMAX 850
ns
TA= +25°C 55 150
Turn-Off Time tOFF
V+ = +4.5V; VNO or VNC =
+3.3V, RL= 300Ω,
CL= 35pF, Figure 2 TA= TMIN to
TMAX 160
ns
Charge Injection Q RGEN = 0Ω, CL= 1nF,
VGEN = 2.5V, Figure 3 TA= +25°C31pC
Off-Isolation VISO RL= 50Ω, CL= 5pF,
f = 1MHz, Figure 4 TA= +25°C -65 dB
On-Channel Bandwidth
(-3dB) RS= 50Ω, RL= 50Ω150 MHz
NC or NO Off-Capacitance C
(
N_OFF
)
f = 1MHz, Figure 5 TA= +25°C85pF
COM Off-Capacitance C
(
COM OFF
)
f = 1MHz, Figure 5 TA= +25°C85pF
On-Capacitance C(ON) f = 1MHz, Figure 5 TA= +25°C 350 pF
POWER SUPPLY
Supply Voltage V+ 2.7 5.5 V
TA= +25°C 0.002 1
Positive Supply Current I+ VIN = 0 or 5V,
V+ = 5.5V TA= TMIN to TMAX 10 µA
ELECTRICAL CHARACTERISTICS—SINGLE SUPPLY (continued)
(V+ = +5V ±10%, V- = 0, GND = 0, VIH = +2.4V, VIL = 0.8V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at
TA= +25°C.) (Notes 2, 3)
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(TA= +25°C, unless otherwise noted.)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-6 -2-4 0246
ON-RESISTANCE
vs. VCOM (DUAL SUPPLIES)
MAX4675 toc01
VCOM (V)
RON (Ω)
V = ±3V
V = ±2.5V
V = ±5V
1.5
1.9
1.7
2.3
2.1
2.5
2.7
-6 -4 -3 -2-5 -1 10 23456
ON-RESISTANCE vs. VCOM
AND TEMPERATURE (DUAL SUPPLIES)
MAX4675 toc02
VCOM (V)
RON (Ω)
V+ = 5V
V- = -5V
TA= +25°C
TA= +85°C
TA= -40°C
TA= 0°C
0
4
2
10
8
6
16
14
12
18
021 3456
ON-RESISTANCE
vs. VCOM (SINGLE SUPPLY)
MAX4675 toc03
VCOM (V)
RON (Ω)
V- = 0
V+ = +2.7V
V+ = +3.3V
V+ = +5V
2.0
3.0
2.5
4.0
3.5
4.5
5.0
0231 456
ON-RESISTANCE vs. VCOM
AND TEMPERATURE (SINGLE SUPPLY)
MAX4675 toc04
VCOM (V)
RON (Ω)
V+ = +5V
TA= +25°CTA= +85°C
TA= -40°CTA= 0°C
0
4
2
8
6
10
12
14
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4675 toc05
TEMPERATURE (°C)
ON/OFF-LEAKAGE CURRENT (nA)
50 9070 110 130
ICOM(ON)
ICOM(OFF)
V+ = 5V
V- = -5V
0
30
20
10
40
50
60
70
80
90
100
-6 -2-4 0246
CHARGE INJECTION
vs. VCOM
MAX4675 toc06
VCOM (V)
Q (pC)
DUAL SUPPLIES
SINGLE SUPPLY
0
150
100
50
200
250
300
-6 -2-4 0246
TURN-ON/TURN-OFF TIMES
vs. VCOM (DUAL SUPPLIES)
MAX4675 toc07
VCOM (V)
tON, tOFF (ns)
A: V+ = +3.5V, V- = -3.5V
B: V+ = +5V, V- = -5V
tOFFA tOFFB
tONA
tONB
0
200
100
500
400
300
700
600
800
03412 56789
TURN-ON/TURN-OFF TIMES vs. VCOM
(SINGLE SUPPLY)
MAX4675 toc08
VCOM (V)
tON, tOFF (ns)
A: V+ = +5.5V
B: V+ = +3V
tOFFA
tOFFB
tONA
tONB
0
50
100
150
200
250
300
2.0 3.02.5 3.5 4.0 4.5 5.0 5.5 6.0
TURN-ON/TURN-OFF TIMES
vs. SUPPLY VOLTAGE (DUAL SUPPLIES)
MAX4675 toc09
SUPPLY VOLTAGE (V+, V-)
tON, tOFF (ns)
V+ = IV-|
tOFF
tON
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
6 _______________________________________________________________________________________
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
TURN-ON/TURN-OFF TIMES
vs. SUPPLY VOLTAGE (SINGLE SUPPLY)
MAX4675 toc10
SUPPLY VOLTAGE (V)
tON, tOFF (µs)
0
0.5
1.0
1.5
2.0
2.5
tOFF
tON
VCOM = V+/2
0
100
50
200
150
250
300
350
TURN-ON/TURN-OFF TIMES
vs. TEMPERATURE (SINGLE SUPPLY)
MAX4675 toc12
TEMPERATURE (°C)
tON, tOFF (ns)
-40 10 60 110
tOFF
tON
V+ = +5V
V- = 0
0
40
20
80
60
120
100
140
-40 0 20-20 406080100
TURN-ON/TURN-OFF TIMES
vs. TEMPERATURE (DUAL SUPPLIES)
MAX4675 toc11
TEMPERATURE (°C)
tON, tOFF (ns)
tOFF
tON
V+ = +5V
V- = -5V
-10
-4
-6
-8
0
-2
8
6
4
2
10
-40 -20 0 20 40 60 80 100
POWER-SUPPLY CURRENT
vs. TEMPERATURE
MAX4675 toc13
TEMPERATURE (°C)
I+, IGND, I- (nA)
V+ = +5V
V- = -5V
I+
IGND
I-
-110
0.01 10 1001 1000
FREQUENCY RESPONSE
-90
-70
-50
-30
-10
10
MAX4675 toc14
FREQUENCY (MHz)
LOSS (dB)
0.1
-75dB AT 1MHz
BANDWIDTH V+ = +5V
V- = -5V
OFF-ISOLATION
-3dB AT 250MHz
Typical Operating Characteristics (continued)
(TA= +25°C, unless otherwise noted.)
Pin Description
PIN
MAX4675 MAX4676 NAME FUNCTION
1 1 V+ Positive Supply
2 2 COM Analog Switch Common Terminals
3 3 V- Negative Supply
4 4 GND Ground
5 — NO Analog Switch Normally Open Terminal
— 5 NC Analog Switch Normally Closed Terminal
6 6 IN Logic Input
MAX4675/MAX4676
3ΩSingle SPST Analog Switches
_______________________________________________________________________________________ 7
Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for all
CMOS devices. Do not exceed the absolute maximum
ratings because stresses beyond the listed ratings can
cause permanent damage to the devices. Always
sequence V+ on first, then V-, followed by the logic
inputs, NO, NC, or COM. If proper power-supply
sequencing is not possible, add two small-signal diodes
(D1, D2) in series with the supply pins (Figure 1). Adding
diodes reduces the analog signal range to one diode
drop below V+ and one diode drop above V- but does
not affect the devices’ low switch resistance and low
leakage characteristics. Device operation is unchanged,
and the difference between V+ and V- should not
exceed 12V.
Power-supply bypassing improves noise margin and
prevents switching noise from propagating from the V+
supply to other components. A 0.1µF capacitor connect-
ed from V+ to GND is adequate for most applications.
V+
V-
Vg
Figure 1. Overvoltage Protection Using External Blocking
Diodes
tr < 20ns
tf < 20ns
50% 50%
0
LOGIC
INPUT
RL
300Ω
COM
GND V-
V-
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VCOM ( RL)
RL + RON
SWITCH
INPUT
IN
+3V
tOFF
0
NO
OR NC
SWITCH
OUTPUT
0.9 x V0UT 0.9 x VOUT
tON
VOUT
SWITCH
OUTPUT
LOGIC
INPUT
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V+
CL
35pF
V+
VOUT
MAX4675
MAX4676
Figure 2. Switching Time
Timing Diagrams/Test Circuits
Figure 3. Charge Injection
VGEN GND
COM
CL
VOUT
V-
V-
V+ VOUT
IN
OFF ON OFF
∆VOUT
Q = (∆VOUT)(CL)
NC
OR NO
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
OFF ON OFF
IN
VIN = 3.0V
V+
RGEN
IN
MAX4675
MAX4676
MAX4675/MAX4676
3ΩSingle SPST 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
© 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information
6LSOT.EPS
Figure 4. Off-Isolation/On-Channel Bandwidth
IN 0 OR
2.4V
SIGNAL
GENERATOR 0dBm
V+
10nF
ANALYZER
NC
OR NO
GND V-
V-
COM V+
MAX4675
MAX4676
Figure 5. Channel On/Off-Capacitance
CAPACITANCE
METER NC OR
NO
COM
GND V-
V-
IN 0 OR
2.4V
10nF V+
f = 1MHz
V+
MAX4675
MAX4676
Timing Diagrams/Test Circuits (continued)
