19-0391; Rev 2; 9/08
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
_______________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 2Ω between 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.
____________________________Features
♦
Low On-Resistance, < 17Ω Typical (35Ω max)
♦
Guaranteed Matched On-Resistance Between
Channels, < 2Ω
♦
Guaranteed Flat On-Resistance over Analog
Signal Range,
Δ4Ω
Max
♦
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
Ordering Information
PART
MAX394CPP
MAX394CWP
MAX394C/D
MAX394EPP
MAX394EWP
MAX394EUP
MAX394MJP
MAX394MWP/PR
TEMPERATURE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +85°C
-55°C to +125°C
PIN-PACKAGE
20 Plastic DIP
20 Wide SO
Dice*
20 Plastic DIP
20 Wide SO
20 TSSOP
20 CERDIP**
20 Wide SO**
20 Wide SO**
________________________Applications
Test Equipment
Communications Systems
PBX, PABX
Heads-Up Displays
Portable Instruments
Audio Signal Routing
Set-Top Boxes
MAX394MWP/PR-T
-55°C to +125°C
*Contact
factory for dice specifications.
**Contact
factory for availability.
Typical Operating Circuit
__________________Pin Configuration
TOP VIEW
IN1 1
NO1 2
COM1 3
NC1 4
V- 5
GND 6
NC2 7
COM2 8
NO2 9
IN2 10
20 IN4
19 NO4
18 COM4
17 NC4
16 V+
OSC
IN
V
2
INPUTS
V
1
OUTPUTS
V
1
- V
2
MAX394
15 N.C.
14 NC3
13 COM3
12 NO3
11
IN3
V
4
V
3
V
3
- V
4
DIP/SO/TSSOP
SWITCHES ARE SHOWN WITH LOGIC "0" INPUT
N.C. = NOT INTERNALLY CONNECTED
FLYING CAPACITOR
LEVEL TRANSLATOR
(2-CHANNEL)
________________________________________________________________
Maxim Integrated Products
1
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.
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
MAX394
ABSOLUTE MAXIMUM RATINGS
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 (T
A
= +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
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.
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+ = 5V ±10%, V- = -5V ±10%, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SWITCH
Analog Signal Range
V
COM
,
V
NO
,
V
NC
(Note 3)
V+ = 4.5V, V- = -4.5V,
V
NC or
V
NO
= ±3.5V,
I
COM
= 10mA,
V
INH
= 2.4V,
V
INL
= 0.8V
V
NC or
V
NO
= ±3V,
I
COM
= 10mA,
V+ = 5V, V- = -5V
T
A
=
+25°C
C, E
M
V-
20
20
V+
35
30
45
0.5
2
Ω
C, E, M
C, E, M
C, E, M
C, E
M
-0.2
-0.1
-2.5
-20
-0.4
-0.2
-5.0
-20
-0.04
-0.04
-0.01
-0.01
4
4
Ω
6
+0.2
+0.1
+2.5
+20
+0.4
+0.2
+5.0
+20
nA
nA
Ω
V
SYMBOL
CONDITIONS
TEMP.
RANGE
MIN
TYP
(Note 2)
MAX
UNITS
On-Resistance
R
ON
T
A
= T
MIN
C, E, M
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
C, E, M
On-Resistance Match Between
Channels (Note 4)
ΔR
ON
On-Resistance Flatness
(Note 4)
V
NC or
V
NO
= 3V, 0V,
R
FLAT(ON)
-3V; I
COM
= 10mA,
V+ = 5V; V- = -5V
I
NC(OFF)
or
I
NO(OFF)
NC or NO Off-Leakage Current
(Note 5)
V
COM
= ±4.5V,
V
NC
or V
NO
= ±4.5V,
V+ = 5.5V,V- = -5.5V
T
A
= T
MIN
C, E
to T
MAX
M
T
A
=
+25°C
C, E
M
COM Leakage Current
(Note 5)
I
COM(ON)
V
COM
= ±4.5V,
V
NC
or V
NO
= ±4.5V,
V+ = 5.5V, V- = -5.5V
T
A
= T
MIN
C, E
to T
MAX
M
2
_______________________________________________________________________________________
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = 5V ±10%, V- = -5V ±10%, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
DIGITAL LOGIC INPUT
Input Current with Input
Voltage High
Input Current with Input
Voltage Low
Logic High Input Voltage
Logic Low Input Voltage
DYNAMIC
Turn-On Time
Turn-Off Time
Break-Before-Make
Time Delay (Note 3)
Charge Injection
(Note 3)
Off-Isolation (Note 6)
Crosstalk (Note 7)
Off-Capacitance
COM Off-Capacitance
t
ON
t
OFF
t
D
V
CTE
V
ISO
V
CT
C
OFF
V
COM
= 3V, Figure 2
V
COM
= 3V, Figure 2
Figure 5
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0Ω, Figure 6
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 3
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 8
f = 1MHz, Figure 3
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
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
2
10
5
66
88
12
12
39
10
57
82
130
175
75
100
ns
ns
ns
pC
dBm
dBm
pF
pF
pF
I
INH
I
INL
V
A_H
V
A_L
V
IN
= 2.4V, all others = 0.8V
V
IN
= 0.8V, all others = 2.4V
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
-1.0
-1.0
2.4
0.8
+0.005
+0.005
+1.0
+1.0
µA
µA
V
V
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
MAX394
C
COM(OFF)
f = 1MHz, Figure 3
Channel On-Capacitance C
COM(ON)
f = 1MHz, Figure 4
SUPPLY
Power-Supply Range
Positive Supply Current
I+
±2.4
All channels on or off,
V+ = 5.5V, V- = -5.5V, V
IN
= 0V or V+
All channels on or off,
V+ = 5.5V, V- = -5.5V, V
IN
= 0V or V+
-1.0
+0.06
±8
+1.0
V
µA
Negative Supply
Current
I-
-1.0
-0.01
+1.0
µA
_______________________________________________________________________________________
3
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
MAX394
ELECTRICAL CHARACTERISTICS—Single +5V Supply
(V+ = 5V ±10%, V- = 0V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SWITCH
Analog Signal Range
V
COM,
V
NO,
V
NC
(Note 3)
C, E
M
C, E, M
0.5
0V
25
V+
65
60
75
2
Ω
C, E, M
4
6
Ω
C, E, M
C, E
M
C, E
M
C, E
M
C, E
M
-0.2
-0.1
-2.5
-20
-0.4
-0.2
-5.0
-20
-0.04
-0.04
-0.01
-0.01
8
+0.2
+0.1
+2.5
+20
+0.4
+0.2
+5.0
+20
nA
nA
Ω
V
SYMBOL
CONDITIONS
TEMP.
RANGE
MIN
TYP
(Note 2)
MAX
UNITS
On-Resistance
R
ON
V+ = 5.0V, V- = 0V,
V
NC or
V
NO
= 3.5V,
I
COM
= 1.0mA,
V
INH
= 2.4V,
V
INL
= 0.8V
V
NC or
V
NO
= 3V,
I
COM
= 1.0mA,
V+ = 5V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
On-Resistance Match
Between Channels (Note 4)
T
A
= +25°C C, E, M
T
A
= T
MIN
to T
MAX
ΔR
ON
On-Resistance Flatness
(Note 4)
V
NC or
V
NO
= 3V, 2V,
R
FLAT(ON)
1V; I
COM
= 1.0mA;
V+ = 5V; V- = 0V
T
A
= +25°C C, E, M
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
NC or NO Off-Leakage
Current (Note 8)
I
NC(OFF)
or
I
NO(OFF)
V
COM
= 0V,
V
NC
or V
NO
= 4.5V,
V+ = 5.5V, V- = 0V
COM Leakage Current
(Note 8)
DIGITAL LOGIC INPUT
Input Current with Input
Voltage High
Input Current with Input
Voltage Low
I
COM(ON)
V
COM
= 4.5V,
V
NC
or V
NO
= 4.5V,
V+ = 5.5V, V- = 0V
I
INH
I
INL
V
IN
= 2.4V, all others = 0.8V
V
IN
= 0.8V, all others = 2.4V
-1.0
-1.0
+0.005
+0.005
+1.0
+1.0
µA
µA
4
_______________________________________________________________________________________
Low-Voltage, Quad, SPDT,
CMOS Analog Switch
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +5V ±10%, V- = 0V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
DYNAMIC
Turn-On Time (Note 3)
Turn-Off Time (Note 3)
Break-Before-Make Time
Delay (Note 3)
Charge Injection
(Note 3)
SUPPLY
Power-Supply Range
Positive Supply Current
Negative Supply Current
V+
I+
I-
All channels on or off, V
IN
= 0V or V+,
V+ = 5.5V, V- = 0V
All channels on or off, V
IN
= 0V or V+,
V+ = 5.5V, V- = 0V
2.4
-1.0
-1.0
+0.01
-0.01
16
+1.0
+1.0
V
µA
µA
t
ON
t
OFF
t
D
V
CTE
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0Ω
V
COM
= 3V, Figure 2
V
COM
= 3V, Figure 2
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
5
20
3
5
60
160
250
300
125
175
ns
ns
ns
pC
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
MAX394
ELECTRICAL CHARACTERISTICS—Single +3.3V Supply
(V+ = 3.0V to 3.6V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SWITCH
Analog Signal Range
V
COM,
V
NO,
V
NC
(Note 3)
C, E
M
C, E, M
C, E
M
C, E
M
C, E
M
C, E
M
-0.2
-0.1
-2.5
-5.0
-0.4
-0.2
-5.0
-20.0
-0.04
-0.04
-0.01
-0.01
0
75
V+
185
175
250
+0.2
+0.1
+2.5
+5.0
+0.4
+0.2
+5.0
+20.0
nA
nA
Ω
V
SYMBOL
CONDITIONS
TEMP.
RANGE
MIN
TYP
(Note 2)
MAX
UNITS
On-Resistance
R
ON
V+ = 3V, V- = 0V,
V
NC or
V
NO
= 1.5V,
I
COM
= 1.0mA,
V
INH
= 2.4V,
V
INL
= 0.8V
V
COM
= 0V,
V
NC
or V
NO
= 3V,
V+ = 3.6V, V- = 0V
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
NC or NO Off-Leakage
Current (Note 8)
I
NC(OFF)
or
I
NO(OFF)
COM Leakage Current
(Note 8)
I
COM(ON)
V
COM
= 3V,
V
NC
or V
NO
= 3V,
V+ = 3.6V, V- = 0V
_______________________________________________________________________________________
5
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