_______________General Description
The MAX394 is a precision, low-voltage, quad, single-
pole/double-throw (SPDT) analog switch. The four inde-
pendent switches operate with bipolar supplies ranging
from ±2.7V to ±8V, or with a single supply of +2.7V to
+15V. The MAX394 offers low on-resistance (less than
35Ω), guaranteed to match within 2Ωbetween channels
and to remain flat over the analog signal range (Δ4Ω
max). It also offers break-before-make switching (10ns
typical), with turn-off times less than 75ns and turn-on
times less than 130ns. The MAX394 is ideal for portable
operation since quiescent current runs less than 1µA with
all inputs high or low.
This monolithic, quad switch is fabricated with Maxim’s
low voltage silicon-gate process. Design improvements
guarantee extremely low charge injection (10pC), low
power consumption (10µW), and electrostatic discharge
(ESD) greater than 2000V.
Logic inputs are TTL and CMOS compatible and guaran-
teed over a +0.8V to +2.4V range for supply voltages up
to +8V. When supplies exceed +8V, the inputs are typi-
cally +0.8V to +4V. Logic inputs and switched analog sig-
nals can range anywhere between the supply voltages
without damage.
________________________Applications
Test Equipment Portable Instruments
Communications Systems Audio Signal Routing
PBX, PABX Set-Top Boxes
Heads-Up Displays
____________________________Features
♦♦Low On-Resistance, < 17ΩTypical (35Ωmax)
♦♦Guaranteed Matched On-Resistance Between
Channels, < 2Ω
♦♦Guaranteed Flat On-Resistance over Analog
Signal Range, Δ4ΩMax
♦♦Guaranteed Charge Injection < 10pC
♦♦Guaranteed Off-Channel Leakage < 2.5nA at +85°C
♦♦ESD Guaranteed > 2000V per Method 3015.7
♦♦Single-Supply Operation (+2.7V to +15V)
Bipolar-Supply Operation (±2.7V to ±8V)
♦♦TTL/CMOS-Logic Compatibility
♦♦Rail-to-Rail Analog Signal Handling Capability
♦♦Pin Compatible with MAX333, MAX333A
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
________________________________________________________________
Maxim Integrated Products
1
SWITCHES ARE SHOWN WITH LOGIC "0" INPUT
N.C. = NOT INTERNALLY CONNECTED
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
IN4
NO4
COM4
NC4
NC1
COM1
NO1
IN1
MAX394
V+
N.C.
NC3
COM3
COM2
NC2
GND
V-
NO3
IN3
IN2
NO2
TOP VIEW
DIP/SO/TSSOP
INPUTS
V1
V2
OSC
IN
V3
V4
FLYING CAPACITOR
LEVEL TRANSLATOR
(2-CHANNEL)
OUTPUTS
V1 - V2
V3 - V4
__________________Pin Configuration
Typical Operating Circuit
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.
19-0391; Rev 2; 9/08
PART TEMPERATURE PIN-PACKAGE
MAX394CPP 0°C to +70°C 20 Plastic DIP
MAX394CWP 0°C to +70°C 20 Wide SO
MAX394C/D 0°C to +70°C Dice*
MAX394EPP -40°C to +85°C 20 Plastic DIP
MAX394EWP -40°C to +85°C 20 Wide SO
MAX394EUP -40°C to +85°C 20 TSSOP
MAX394MJP -55°C to +85°C 20 CERDIP**
MAX394MWP/PR -55°C to +125°C 20 Wide SO**
MAX394MWP/PR-T
-55°C to +125°C 20 Wide SO**
Ordering Information
*
Contact factory for dice specifications.
**
Contact factory for availability.
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
2 _______________________________________________________________________________________
Voltage Referenced to GND
V+ .......................................................................-0.3V to +17V
V- ........................................................................+0.3V to -17V
V+ to V-...............................................................-0.3V to +17V
COM_, NO_, NC_, IN_ (Note 1) ..................(V- - 2V) to (V+ + 2V)
or 30mA, whichever occurs first
Continuous Current, Any Pin...............................................30mA
Peak Current, Any Pin
(pulsed at 1ms, 10% duty cycle max) ..........................100mA
Continuous Power Dissipation (TA= +70°C)
Plastic DIP (derate 10.53mW/°C above+70°C) ...........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
CERDIP (derate 10.00mW/°C above +70°C)...............800mW
TSSOP (derate 11.00mW/°C above +70°C) ................879mW
Operating Temperature Ranges
MAX394C_ P.......................................................0°C to +70°C
MAX394E_ P ....................................................-40°C to +85°C
MAX394MJP ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = 5V ±10%, V- = -5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA= TMIN to TMAX, unless otherwise noted.)
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 NC, NO, COM, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to
maximum current rating.
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL MIN TYP MAX
(Note 2) UNITS
On-Resistance RON
C, E, M
Ω
20 35
Analog Signal Range
VCOM,
VNO,
VNC
V- V+ V
On-Resistance Flatness
(Note 4) RFLAT(ON)
4
Ω
-0.2 -0.01 +0.2
NC or NO Off-Leakage Current
(Note 5)
INC(OFF)
or
INO(OFF)
nA
-2.5 +2.5
VNC or VNO = 3V, 0V,
-3V; ICOM = 10mA,
V+ = 5V; V- = -5V
V+ = 4.5V, V- = -4.5V,
VNC or VNO = ±3.5V,
ICOM = 10mA,
VINH = 2.4V,
VINL = 0.8V
VCOM = ±4.5V,
VNC or VNO = ±4.5V,
V+ = 5.5V,V- = -5.5V
(Note 3)
TA=
+25°C
TA=
+25°C
TA= TMIN
to TMAX
TA=
+25°C
TA= TMIN
to TMAX
C, E
TA= TMIN
to TMAX
M
6
-20 +20
C, E
M20 30
CONDITIONS TEMP.
RANGE
C, E, M
C, E, M
C, E
-0.1 -0.01 +0.1M
-0.4 -0.04 +0.4
COM Leakage Current
(Note 5)
ICOM(ON) nA
-5.0 +5.0
VCOM = ±4.5V,
VNC or VNO = ±4.5V,
V+ = 5.5V, V- = -5.5V
TA=
+25°C
TA= TMIN
to TMAX
C, E
M-20 +20
C, E
-0.2 -0.04 +0.2M
45
0.5 2
Ω
On-Resistance Match Between
Channels (Note 4) ΔRON
VNC or VNO = ±3V,
ICOM = 10mA,
V+ = 5V, V- = -5V
TA=
+25°C
TA= TMIN
to TMAX 4
C, E, M
C, E, M
SWITCH
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = 5V ±10%, V- = -5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA= TMIN to TMAX, unless otherwise noted.)
PARAMETER SYMBOL MIN TYP MAX
(Note 2) UNITS
Input Current with Input
Voltage High IINH -1.0 +0.005 +1.0 µA
CONDITIONS
VIN = 2.4V, all others = 0.8V
Input Current with Input
Voltage Low IINL -1.0 +0.005 +1.0 µAVIN = 0.8V, all others = 2.4V
Turn-On Time tON
82 130 ns
Charge Injection
(Note 3) VCTE 510pC
CL= 1.0nF, VGEN = 0V,
RGEN = 0Ω, Figure 6
TA= +25°C
TA= TMIN to TMAX 175
VCOM = 3V, Figure 2
TA= +25°C
TA= TMIN to TMAX 100
VCOM = 3V, Figure 2Turn-Off Time tOFF
57 75 ns
Power-Supply Range
Figure 5
Break-Before-Make
Time Delay (Note 3) tD210 ns
TA= +25°C
TA= +25°C
RL= 50Ω, CL= 5pF,
f = 1MHz, Figure 3
Off-Isolation (Note 6) VISO 66 dBm
TA= +25°C
RL= 50Ω, CL= 5pF,
f = 1MHz, Figure 8
Crosstalk (Note 7) VCT 88 dBm
TA= +25°Cf = 1MHz, Figure 3Off-Capacitance COFF 12 pF
TA= +25°Cf = 1MHz, Figure 3COM Off-Capacitance CCOM(OFF) 12 pF
TA= +25°Cf = 1MHz, Figure 4Channel On-Capacitance CCOM(ON) pF
±2.4 ±8 V
Positive Supply Current
39
I+ All channels on or off,
V+ = 5.5V, V- = -5.5V, VIN = 0V or V+ -1.0 +0.06 +1.0 µA
Negative Supply
Current I- All channels on or off,
V+ = 5.5V, V- = -5.5V, VIN = 0V or V+ -1.0 -0.01 +1.0 µA
Logic High Input Voltage VA_H 2.4 V
Logic Low Input Voltage VA_L 0.8 VTA= TMIN to TMAX
TA= TMIN to TMAX
TA= +25°C
DIGITAL LOGIC INPUT
SUPPLY
DYNAMIC
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = 5V ±10%, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA= TMIN to TMAX, unless otherwise noted.)
PARAMETER SYMBOL MIN TYP MAX
(Note 2) UNITS
Analog Signal Range
VCOM,
VNO,
VNC
0V V+ V(Note 3)
On-Resistance RON
25 65
Ω
V+ = 5.0V, V- = 0V,
VNC or VNO = 3.5V,
ICOM = 1.0mA,
VINH = 2.4V,
VINL = 0.8V
On-Resistance Match
Between Channels (Note 4) ΔRON Ω
VNC or VNO = 3V,
ICOM = 1.0mA,
V+ = 5V
On-Resistance Flatness
(Note 4) RFLAT(ON) Ω
VNC or VNO = 3V, 2V,
1V; ICOM = 1.0mA;
V+ = 5V; V- = 0V
NC or NO Off-Leakage
Current (Note 8)
INC(OFF)
or
INO(OFF)
-0.2 -0.01 +0.2
nA
VCOM = 0V,
VNC or VNO = 4.5V,
V+ = 5.5V, V- = 0V
COM Leakage Current
(Note 8) ICOM(ON)
-0.4 -0.04 +0.4
nA
VCOM = 4.5V,
VNC or VNO = 4.5V,
V+ = 5.5V, V- = 0V
TA= +25°C
TA= TMIN
to TMAX
75
-2.5 +2.5
-20 +20
TA= TMIN
to TMAX
TA= TMIN
to TMAX
C, E
M
C, E
M-20 +20
-5.0 +5.0
M
C, E
TA= +25°C -0.2 -0.04 +0.2
C, E
M-0.1 -0.01 +0.1
TA= TMIN
to TMAX
TA= +25°C
TA= TMIN
to TMAX
TA= +25°C
TA= +25°C
C, E, M
C, E
M
C, E, M 8
C, E, M 6
C, E, M 4
C, E, M 0.5 2
60
CONDITIONS TEMP.
RANGE
Input Current with Input
Voltage High IINH µAVIN = 2.4V, all others = 0.8V -1.0 +0.005 +1.0
Input Current with Input
Voltage Low IINL µAVIN = 0.8V, all others = 2.4V -1.0 +0.005 +1.0
SWITCH
DIGITAL LOGIC INPUT
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +5V ±10%, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA= TMIN to TMAX, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS—Single +3.3V Supply
(V+ = 3.0V to 3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA= TMIN to TMAX, unless otherwise noted.)
PARAMETER SYMBOL MIN TYP MAX
(Note 2) UNITS
Turn-On Time (Note 3) tON
160 250 ns
CONDITIONS
VCOM = 3V, Figure 2
Turn-Off Time (Note 3) tOFF ns
Positive Supply Current I+ -1.0 +0.01 +1.0 µA
VCOM = 3V, Figure 2
All channels on or off, VIN = 0V or V+,
V+ = 5.5V, V- = 0V
60 125
PARAMETER SYMBOL MIN TYP MAX
(Note 2) UNITS
Analog Signal Range
VCOM,
VNO,
VNC
0V+V
CONDITIONS
(Note 3)
On-Resistance RON
75 185
Ω
V+ = 3V, V- = 0V,
VNC or VNO = 1.5V,
ICOM = 1.0mA,
VINH = 2.4V,
VINL = 0.8V
-0.2 -0.04 +0.2M
TA= +25°C
NC or NO Off-Leakage
Current (Note 8)
INC(OFF)
or
INO(OFF)
-0.2 -0.01 +0.2
nA
VCOM = 0V,
VNC or VNO = 3V,
V+ = 3.6V, V- = 0V
COM Leakage Current
(Note 8) ICOM(ON)
-0.4 -0.04 +0.4
nA
VCOM = 3V,
VNC or VNO = 3V,
V+ = 3.6V, V- = 0V
-20.0 +20.0
-2.5 +2.5
-5.0 +5.0
TA= TMIN
to TMAX
TA= TMIN
to TMAX
C, E
M
C, E
M
-5.0 +5.0
C, E
TA= +25°C
C, E
M-0.1 -0.01 +0.1
C, E
TA= TMIN
to TMAX
TA= +25°C M
C, E, M 250
175
SWITCH
TEMP.
RANGE
Power-Supply Range V+ V2.4 16
Break-Before-Make Time
Delay (Note 3) tD520 ns
Charge Injection
(Note 3) VCTE pC
CL= 1.0nF, VGEN = 0V,
RGEN = 0Ω35
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
TA= TMIN to TMAX
TA= TMIN to TMAX
300
175
Negative Supply Current I- -1.0 -0.01 +1.0 µA
All channels on or off, VIN = 0V or V+,
V+ = 5.5V, V- = 0V
DYNAMIC
SUPPLY
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
6 _______________________________________________________________________________________
PARAMETER SYMBOL MIN TYP MAX
(Note 2) UNITSCONDITIONS
Input Current with Input
Voltage Low IINL µA
Negative Supply Current I- -1.0 -0.01 +1.0 µA
Positive Supply Current I+ -1.0 +0.01 +1.0 µA
All channels on or off, VIN = 0V or V+,
V+ = 3.6V, V- = 0V
All channels on or off, VIN = 0V or V+,
V+ = 3.6V, V- = 0V
VIN = 0.8V, all others = 2.4V -1.0 +0.005 +1.0
ELECTRICAL CHARACTERISTICS—Single +3.3V Supply (continued)
(V+ = 3.0V to 3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA= TMIN to TMAX, unless otherwise noted.)
Power-Supply Range V+ 2.7 16 V
Input Current with Input
Voltage High IINH µAVIN = 2.4V, all others = 0.8V -1.0 +0.005 +1.0
Turn-On Time (Note 3) tON 400 nsVCOM = 1.5V, Figure 2
Turn-Off Time (Note 3) tOFF 150 nsVCOM = 1.5V, Figure 2
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
Break-Before-Make Delay
(Note 3)
Charge Injection (Note 3) VCTE 15pC
CL= 1.0nF, VGEN = 0V,
RGEN = 0Ω, Figure 6
tD520 nsFigure 5
DIGITAL LOGIC INPUT
DYNAMIC
SUPPLY
Note 2: 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 3: Guaranteed by design.
Note 4: ΔRON = ΔRON(max) - ΔRON(min). On-resistance match between channels and flatness are guaranteed only with
specified voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as
measured over the specified analog signal range.
Note 5: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at room temperature.
Note 6: See Figure 6. Off-isolation = 20log10 VCOM/VNC or VNO, VCOM = output, VNC or NO = input to off switch.
Note 7: Between any two switches. See Figure 3.
Note 8: Leakage testing at single supply is guaranteed by testing with dual supplies.
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
_______________________________________________________________________________________ 7
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
35
0
-8 -6 -4 -2 0 2 4 6 8
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
5
10
30
MAX394-01
VCOM (V)
RON (Ω)
25
20
15
V+ = 3V, V- = -3V
V+ = 5V, V- = -5V
V+ = 8V, V- = -8V
100
10
0123 456
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
20
30
70
90
80
MAX394-02
VCOM (V)
RON (Ω)
60
50
40
V+ = 3V, V- = 0V
V+ = 5V, V- = 0V
0
10
-5 -4 -3 -2 -1 0 21345
ON-RESISTANCE vs. VCOM
OVER TEMPERATURE (DUAL SUPPLIES)
20
30
MAX394-03
VCOM (V)
RON (Ω)
50
40
+125°C
+25°C
+85°C
V+ = +5V
V- = -5V
0
10
012 3456
ON-RESISTANCE vs. VCOM
OVER TEMPERATURE (SINGLE SUPPLY)
20
30
VCOM (V)
RON (Ω)
50
40 +85°C
+125°C
+25°C
V+ = 5V
V- = 0V
MAX394-04
0.0001
0.01
0.001
-75 -50 -25 0 25 50 75 100 125
OFF-LEAKAGE CURRENT
vs. TEMPERATURE
0.1
10
1
MAX394-05
TEMPERATURE (°C)
OFF LEAKAGE (pA)
1000
100
ICOM(OFF)
INC(OFF) or INO(OFF)
V+ = 5.5V
V- = -5.5V
VNC or VNO = ±4.5V
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
8 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted).
0
-100
0.1k 1k 10k 100k 100M10M1M
OFF-ISOLATION vs. FREQUENCY
-80
-20
MAX394-09
FREQUENCY (Hz)
VISO (dBm)
-40
-60
CIRCUIT OF FIGURE 7
VIN = 0dBm
0
-100
0.1k 1k 10k 100k 100M10M1M
CROSSTALK vs. FREQUENCY
-80
-20
MAX394-10
FREQUENCY (Hz)
VCT (dBm)
-40
-60
CIRCUIT OF FIGURE 8
VIN = 0dBm,
RL = 50W
-50
-20
-40
-30
-5 -4 -3 -2 -1 3 4012 5
CHARGE INJECTION
vs. VCOM
-10
0
20
10
MAX394-07
VCOM (V)
Q (pC)
50
40
30
V+ = 3V, V- = 0V
V+ = 5V, V- = -5V V+ = 5V, V- = 0V
0.00001
0.001
0.0001
-75 -50 -25 0 25 50 75 100 125
SUPPLY CURRENT vs.
TEMPERATURE
0.01
1
0.1
MAX394-08
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
100
10
I+ or I-
V+ = 5.5V
V- = -5.5V
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
_______________________________________________________________________________________ 9
__________Applications Information
Operation with Supply Voltages
Other than ±5V
The MAX394 switch operates with ±2.7V to ±8V bipolar
supplies and a +2.7V to +15V single 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
coefficient is 0.5%/°C (typ).
Power-Supply Sequencing
and Overvoltage Protection
Do not exceed the absolute maximum ratings, because
stresses beyond the listed ratings may cause perma-
nent damage to the device. Proper power-supply
sequencing is recommended for all CMOS devices.
Always apply V+, followed by V- (when using split sup-
plies) before applying analog signals or logic inputs,
especially if the analog or logic signals are not current-
limited. If this sequencing is not possible and if the ana-
log or logic inputs are not current-limited to less than
30mA, add a single diode (D1) for single-supply opera-
tion (Figure 1). If using dual supplies or if the analog
signal can dip below ground in single-supply operation,
add two small signal diodes (D1, D2), as shown in
Figure 1. Adding protection diodes reduces the analog
signal range to a diode drop above V- for D2. Leakage
is not affected by adding the diodes. On-resistance
increases by a small amount at low supply voltages.
Maximum supply voltage (V- to V+) must not exceed
17V.
Adding diodes D1 and D2 also protects against some
overvoltage situations. With the circuit of Figure 1, if the
supply voltage is below the absolute maximum rating
and if a fault voltage up to the absolute maximum rating
is applied to an analog signal pin, no damage will
result. For example, with ±5V supplies, analog signals
up to ±8.5V will not damage the circuit of Figure 1. If
only a single fault signal is present, the fault voltage
can go to +12V or -12V without damage.
Pin Description
COM
V-
V+
NO or NC
* INTERNAL PROTECTION DIODES
D2
D1
-5V
+5V
MAX394
*
*
*
*
Figure 1. Overvoltage Protection Using Blocking Diodes
1, 10, 11, 20 IN1–IN4 Logic-Level Inputs
2, 9, 12, 19 NO1–NO4 Normally Open Switches
3, 8, 13, 18 COM1–COM4 Common Switch Poles
4, 7,14, 17 NC1–NC4 Normally Closed Switches
5V- Negative Power Supply
6GND Ground
16 V+ Positive Power Supply
15 N.C. Not Internally Connected
PIN NAME FUNCTION
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
10 ______________________________________________________________________________________
50%
VO1
VO2
0.9VO
+3V
0V
VCOM
0V
VCOM
LOGIC
INPUT
SWITCH
OUTPUT
SWITCH
OUTPUT
+5V
V+
NO
V-
-5V
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
LOGIC 0 INPUT.
GND
LOGIC
INPUT
0V
0.9VO
tDtD
RL2
NC
CL2
VO2
VO1
CL1
RL = 1kΩ
CL = 35pF
COM_
VCOM RL1
IN_ MAX394
Figure 5. Break-Before-Make Delay
tR < 20ns
tF < 20ns
50%
0V
+10V
LOGIC
INPUT
V-
-15V
300Ω
COM_
GND
(REPEAT TEST FOR IN2, IN3, AND IN4.)
VIN
+10V
IN_
NO_
50%
tOPEN
50% 50%
50% 50%
3V
tOPEN
tON
tOFF
tON
tOFF
0V
-10V
VCOM
+15V
V+
NC_
-10V
SWITCH OUTPUT
MAX394
V-
CAPACITANCE
METER
GND C
-5V
IN 0V or 2.4V
C+5V
V+
NC
or NO
COM
MAX394
Figure 2. Switching-Time Test Circuit
Figure 3. Channel Off-Capacitance
V-
CAPACITANCE
METER
GND C
-5V
IN 0V or 2.4V
C+5V
V+
COM
NC or
NO
MAX394
Figure 4. Channel On-Capacitance
______________________________________________Test Circuits/Timing Diagrams
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
______________________________________________________________________________________ 11
VGEN GND
NC OR NO
CL
10nF
VO
-5V
V-
V+
RGEN
VO
IN_ ON OFF ON
ΔVO
Q = (ΔVO)(CL)
COM_
+5V
IN_
MAX394
Figure 6. Charge Injection
IN_
0V,
2.4V
SIGNAL
GENERATOR
+5V
C
V+
ANALYZER
CH A
CH B
NC_
OR NO_
RL
50Ω
GND
COM_
C
-5V
C = 5pF
FREQUENCY
TESTED
1 MHz
SIGNAL
GENERATOR
AUTOMATIC
SYNTHESIZER
ANALYZER
TRACKING
SPECTRUM
ANALYZER
VISO = 20LOG VCOM
VNC OR VNO
V-
MAX394
Figure 7. Off Isolation
_________________________________Test Circuits/Timing Diagrams (continued)
IN2 0V or 2.4V
SIGNAL
GENERATOR
+5V
C
ANALYZER
CH A
CH B
RL
GND C
V-
-5V
FREQUENCY
TESTED
1MHz
SIGNAL
GENERATOR
AUTOMATIC
SYNTHESIZER
ANALYZER
TRACKING
SPECTRUM
ANALYZER
0V or 2.4V IN
50Ω
V+
COM
COM
NC or NO
NC OR NO
MAX394
VCT = 20LOG VCOM
VNC OR VNO
Figure 8. Crosstalk Test Circuit
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
12 ______________________________________________________________________________________
___________________Chip Topography
NO1 NO4IN1 IN4
NO2 IN2 IN3 NO3
0.100"
(2.54mm)
COM4
NC4
V+
NC3
COM3
COM1
NC1
V-
GND
NC2
COM2
0.128"
(3.25mm)
SUBSTRATE IS CONNECTED TO V+
TRANSISTOR COUNT: 137
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
20 Plastic DIP P20-4 21-0043
20 Wide SO W26-1 21-0042
20 TSSOP U20-2 21-0066
20 CERDIP J20-2 21-0335
MAX394
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________
13
© 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
2 9/08 Added information for rugged plastic product 1