19-0300; Rev 0; 9/94
Precision, Low-Voltage Analog Switches
_______________General Description
The MAX381/MAX383/MAX385 are precision, low-volt-
age analog switches. The single-pole single-throw
MAX381 and double-pole single-throw MAX385 dual
switches are normally open. The single-pole double-
throw MAX383 has two normally open and two normally
closed poles. All three parts offer low on-resistance
(less than 35Ω), guaranteed to match to within 2Ω
between channels and to remain flat over the specified
analog signal range (4Ω max). They also offer low leak-
age (less than 250pA at +25°C and less than 2.5nA at
+85°C) and fast switching (turn-on time less than 175ns
and turn-off time less than 100ns).
The MAX381/MAX383/MAX385 are fabricated with
Maxim’s low-voltage silicon-gate process for high sys-
tem accuracy. Design improvements guarantee
extremely low charge injection (<5pC) and low power
consumption (<10µW).
These monolithic switches operate with a single posi-
tive supply (+3V to +15V) or with split supplies (±3V to
±8V) while retaining CMOS-logic input compatibility
and fast switching. CMOS inputs provide reduced input
loading.
____________________________Features
o
Single-Supply Operation (+3V to +15V)
Bipolar-Supply Operation (±3V to ±8V)
o
Pin-Compatible with DG401/DG403/DG405
o
Low On-Resistance, 20Ω Typical (35Ω Max)
o
Guaranteed Matched On-Resistance Between
Channels, <2Ω
o
Guaranteed Flat On-Resistance over Specified
Analog Signal Range, <4Ω
o
Guaranteed Charge Injection, <5pC
o
Guaranteed Off-Channel Leakage, <2.5nA at +85°C
o
TTL/CMOS-Logic Compatible with 3V, 5V, ±3V,
and ±5V Supplies
o
Rail-to-Rail Analog Signal Handling Capability
MAX381/MAX383/MAX385
______________Ordering Information
PART
MAX381CPE
MAX381CSE
MAX381C/D
MAX381EPE
MAX381ESE
MAX381EJE
MAX381MJE
TEMP. RANGE
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 +125°C
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP**
16 CERDIP**
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Heads-Up Displays
Audio Signal Routing
Guidance and Control Systems
Military Radios
Communication Systems
Battery-Operated Systems
PBX, PABX
Ordering Information continued on last page.
* Dice are tested at T
A
= +25°C only.
** Contact factory for package availability.
___________________________Pin Configurations/Block Diagrams/Truth Tables
TOP VIEW
COM1
1
N.C.
2
N.C.
3
N.C.
4
N.C.
5
N.C.
6
N.C.
7
COM2
8
16
NO1
15
IN1
14
V-
13
GND
COM1
1
N.C.
2
COM3
3
NC3
4
NC4
5
COM4
6
N.C.
7
COM2
8
MAX383
NC
COM
NC
NO
OFF
COM
OFF
OFF
16
NO1
15
IN1
14
V-
13
GND
12
N.C.
COM1
1
N.C.
2
COM3
3
NO3
4
NO4
5
COM4
6
N.C.
7
COM2
8
16
NO1
15
IN1
14
V-
13
GND
12
N.C.
MAX381
12
N.C.
11
V+
10
IN2
9
MAX383
11
V+
10
IN2
9
MAX385
11
V+
10
IN2
9
NO2
N02
NO2
MAX381
LOGIC IN
SWITCH
N.C. = NOT INTERNALLY
CONNECTED
0
1
PWR OFF
OFF
ON
OFF
LOGIC IN
0
1
PWR OFF
NO
OFF
COM
OFF
MAX385
LOGIC IN
COM, NO
0
1
PWR OFF
OFF
ON
OFF
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.
Precision, Low-Voltage Analog Switches
MAX381/MAX383/MAX385
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_ ................(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
Note 1:
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
Operating Temperature Ranges
MAX38_C_ E .......................................................0°C to +70°C
MAX38_E_ E ....................................................-40°C to +85°C
MAX38_MJE ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
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
4
4
6
-0.2
-0.1
-2.5
-5.0
-0.2
-0.1
-2.5
-5.0
-0.4
-0.2
-5.0
-20.0
-0.04
-0.04
-0.01
-0.01
-0.01
-0.01
0.2
0.1
2.5
5.0
0.2
0.1
2.5
5.0
0.4
0.2
5.0
20.0
nA
nA
nA
Ω
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
C, E, M
C, E, M
C, E, M
C, E
M
On-Resistance Match Between
Channels (Note 4)
∆R
ON
Ω
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 Off Leakage Current
(Note 5)
V
COM
= ±4.5V,
I
COM(OFF)
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 On 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
_______________________________________________________________________________________
Precision, Low-Voltage Analog Switches
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
MAX383 only, Figure 3
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0Ω, Figure 4
R
L
= 100Ω, C
L
= 5pF,
f = 1MHz, Figure 5
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 6
f = 1MHz, Figure 7
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
10
20
2
72
90
12
12
39
5
60
100
175
225
100
150
ns
ns
ns
pC
dB
dB
pF
pF
pF
I
INH
I
INL
V
AH
V
AL
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
MAX381/MAX383/MAX385
C
COM(OFF)
f = 1MHz, Figure 7
Channel On Capacitance C
COM(ON)
f = 1MHz, Figure 8
SUPPLY
Power-Supply Range
Positive Supply Current
I+
±3
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
Note 2:
Note 3:
Note 4:
I-
-1.0
-0.01
1.0
µA
Note 5:
Note 6:
Note 7:
Note 8:
The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in
this data sheet.
Guaranteed by design.
∆R
ON
=
∆R
ON
(max) -
∆R
ON
(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.
Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at room temperature.
See Figure 4. Off isolation = 20log
10
V
COM
/V
NC
or V
NO
, V
COM
= output, V
NC
or
NO
= input to off switch.
Between any two switches. See Figure 5.
Leakage testing at single supply is guaranteed by testing with dual supplies.
_______________________________________________________________________________________
3
Precision, Low-Voltage Analog Switches
MAX381/MAX383/MAX385
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
C, E
M
C, E
M
-0.2
-0.1
-2.5
-5.0
-0.2
-0.1
-2.5
-5.0
-0.4
-0.2
-5.0
-20.0
-0.04
-0.04
-0.01
-0.01
-0.01
-0.01
8
0.2
0.1
2.5
5.0
0.2
0.1
2.5
5.0
0.4
0.2
5.0
20.0
nA
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
∆R
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
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 Off Leakage Current
(Note 8)
V
COM
= 4.5V,
I
COM(OFF)
V
NC
or V
NO
= 0V,
V+ = 5.5V, V- = 0V
COM On 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
_______________________________________________________________________________________
Precision, Low-Voltage Analog Switches
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
Turn-Off Time
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
2.7
-1.0
-1.0
0.01
-0.01
16
1.0
1.0
V
µA
µA
t
ON
t
OFF
t
D
V
CTE
V
COM
= 3V, Figure 2
V
COM
= 3V, Figure 2
MAX383 only
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0Ω
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
10
20
2
5
60
160
250
300
125
175
ns
ns
ns
pC
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
MAX381/MAX383/MAX385
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
C, E
M
C, E
M
-0.2
-0.1
-2.5
-5.0
-0.2
-0.1
-2.5
-5.0
-0.4
-0.2
-5.0
-20.0
-0.04
-0.04
-0.01
-0.01
-0.01
-0.01
0V
75
V+
185
175
250
0.2
0.1
2.5
5.0
0.2
0.1
2.5
5.0
0.4
0.2
5.0
20.0
5
nA
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
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 Off Leakage Current
(Note 8)
V
COM
= 3V,
I
COM(OFF)
V
NC
or V
NO
= 0V,
V+ = 3.6V, V- = 0V
COM On Leakage Current
(Note 8)
I
COM(ON)
V
COM
= 3V,
V
NC
or V
NO
= 3V,
V+ = 3.6V, V- = 0V
_______________________________________________________________________________________
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