_______________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 35
), guaranteed to match to within 2
between channels and to remain flat over the specified
analog signal range (4
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.
________________________Applications
Sample-and-Hold Circuits
Military Radios
Test Equipment
Communication Systems
Heads-Up Displays
Battery-Operated Systems
Audio Signal Routing
PBX, PABX
Guidance and Control Systems
____________________________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, 20
Typical (35
Max)
o
Guaranteed Matched On-Resistance Between
Channels, <2
o
Guaranteed Flat On-Resistance over Specified
Analog Signal Range, <4
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
______________Ordering Information
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
________________________________________________________________
Maxim Integrated Products
1
MAX383
LOGIC IN
COM
0
1
NC
NO
TOP VIEW
MAX381
LOGIC IN
SWITCH
0
1
OFF
ON
MAX385
LOGIC IN
COM, NO
0
1
OFF
ON
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NO1
IN1
V-
GND
NO3
COM3
N.C.
COM1
MAX385
N.C.
V+
IN2
NO2
COM2
N.C.
COM4
NO4
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NO1
IN1
V-
GND
N.C.
N.C.
N.C.
COM1
MAX381
N.C.
V+
IN2
NO2
COM2
N.C.
N.C.
N.C.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
NO1
IN1
V-
GND
NC3
COM3
N.C.
COM1
MAX383
N.C.
V+
IN2
N02
COM2
N.C.
COM4
NC4
NC
NO
COM
OFF
OFF
COM
PWR OFF
OFF
OFF
OFF
PWR OFF
OFF
PWR OFF
OFF
N.C. = NOT INTERNALLY
CONNECTED
___________________________Pin Configurations/Block Diagrams/Truth Tables
Call toll free 1-800-998-8800 for free samples or literature.
19-0300; Rev 0; 9/94
Ordering Information continued on last page.
* Dice are tested at T
A
= +25°C only.
** Contact factory for package availability.
16 CERDIP**
-55°C to +125°C
MAX381MJE
16 CERDIP**
-40°C to +85°C
MAX381EJE
16 Narrow SO
-40°C to +85°C
MAX381ESE
16 Plastic DIP
-40°C to +85°C
MAX381EPE
Dice*
0°C to +70°C
MAX381C/D
16 Narrow SO
0°C to +70°C
MAX381CSE
16 Plastic DIP
0°C to +70°C
MAX381
CPE
PIN-PACKAGE
TEMP. RANGE
PART
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
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_ ................(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
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
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.)
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
R
ON
C, E, M
20
35
0.5
2
On-Resistance Match Between
Channels (Note 4)
R
ON
Analog Signal Range
V
COM
,
V
NO
,
V
NC
V-
V+
V
On-Resistance Flatness
(Note 4)
R
FLAT(ON)
4
-0.2
-0.01
0.2
NC or NO Off Leakage Current
(Note 5)
I
NC(OFF)
or
I
NO(OFF)
nA
-2.5
2.5
V
NC or
V
NO
= 3V, 0V,
-3V; I
COM
= -10mA,
V+ = 5V; V- = -5V
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
V
COM
= ±4.5V,
V
NC
or V
NO
= +4.5V,
V+ = 5.5V,V- = -5.5V
(Note 3)
T
A
=
+25°C
T
A
=
+25°C
T
A
=
+25°C
T
A
= T
MIN
to T
MAX
T
A
=
+25°C
T
A
= T
MIN
to T
MAX
C, E
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
M
4
6
-5.0
5.0
C, E
M
20
30
CONDITIONS
TEMP.
RANGE
C, E, M
C, E, M
C, E, M
C, E, M
C, E
-0.1
-0.01
0.1
M
-0.2
-0.01
0.2
COM Off Leakage Current
(Note 5)
I
COM(OFF)
nA
-2.5
2.5
V
COM
= ±4.5V,
V
NC
or V
NO
= +4.5V,
V+ = 5.5V, V- = -5.5V
T
A
=
+25°C
T
A
= T
MIN
to T
MAX
C, E
M
-5.0
5.0
C, E
-0.1
-0.01
0.1
M
-0.4
-0.04
0.4
COM On Leakage Current
(Note 5)
I
COM(ON)
nA
-5.0
5.0
V
COM
= ±4.5V,
V
NC
or V
NO
= ±4.5V,
V+ = 5.5V, V- = -5.5V
T
A
=
+25°C
T
A
= T
MIN
to T
MAX
C, E
M
-20.0
20.0
C, E
-0.2
-0.04
0.2
M
SWITCH
45
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
_______________________________________________________________________________________
3
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
SYMBOL
MIN
TYP
MAX
(Note 2)
UNITS
Input Current with Input
Voltage High
I
INH
-1.0
0.005
1.0
µA
CONDITIONS
V
IN
= 2.4V, all others = 0.8V
Input Current with Input
Voltage Low
I
INL
-1.0
0.005
1.0
µA
V
IN
= 0.8V, all others = 2.4V
Turn-On Time
t
ON
100
175
ns
Charge Injection
(Note 3)
V
CTE
2
5
pC
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0
, Figure 4
T
A
= +25°C
T
A
= T
MIN
to T
MAX
225
V
COM
= 3V, Figure 2
T
A
= +25°C
T
A
= T
MIN
to T
MAX
150
V
COM
= 3V, Figure 2
Turn-Off Time
t
OFF
60
100
ns
Power-Supply Range
MAX383 only, Figure 3
Break-Before-Make
Time Delay (Note 3)
t
D
10
20
ns
T
A
= +25°C
T
A
= +25°C
R
L
= 100
, C
L
= 5pF,
f = 1MHz, Figure 5
Off Isolation (Note 6)
V
ISO
72
dB
T
A
= +25°C
R
L
= 50
, C
L
= 5pF,
f = 1MHz, Figure 6
Crosstalk (Note 7)
V
CT
90
dB
T
A
= +25°C
f = 1MHz, Figure 7
Off Capacitance
C
OFF
12
pF
T
A
= +25°C
f = 1MHz, Figure 7
COM Off Capacitance
C
COM(OFF)
12
pF
T
A
= +25°C
f = 1MHz, Figure 8
Channel On Capacitance C
COM(ON)
pF
±3
±8
V
Positive Supply Current
39
I+
All channels on or off,
V+ = 5.5V, V- = -5.5V, V
IN
= 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, V
IN
= 0V or V+
-1.0
-0.01
1.0
µA
Logic High Input Voltage
V
AH
2.4
V
Logic Low Input Voltage
V
AL
0.8
V
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
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:
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.
Note 5:
Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at room temperature.
Note 6:
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.
Note 7:
Between any two switches. See Figure 5.
Note 8:
Leakage testing at single supply is guaranteed by testing with dual supplies.
T
A
= +25°C
DIGITAL LOGIC INPUT
SUPPLY
DYNAMIC
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
4
_______________________________________________________________________________________
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
SYMBOL
MIN
TYP
MAX
(Note 2)
UNITS
Analog Signal Range
V
COM,
V
NO,
V
NC
0V
V+
V
(Note 3)
On-Resistance
R
ON
25
65
V+ = 5.0V, V- = 0V,
V
NC or
V
NO
= 3.5V,
I
COM
= 1.0mA,
V
INH
= 2.4V,
V
INL
= 0.8V
On-Resistance Match
Between Channels (Note 4)
R
ON
V
NC or
V
NO
= 3V,
I
COM
= 1.0mA,
V+ = 5V
On-Resistance Flatness
(Note 4)
R
FLAT(ON)
V
NC or
V
NO
= 3V, 2V,
1V; I
COM
= 1.0mA;
V+ = 5V; V- = 0V
NC or NO Off Leakage
Current (Note 8)
I
NC(OFF)
or
I
NO(OFF)
-0.2
-0.01
0.2
nA
V
COM
= 0V,
V
NC
or V
NO
= 4.5V,
V+ = 5.5V, V- = 0V
COM Off Leakage Current
(Note 8)
I
COM(OFF)
-0.2
-0.01
0.2
nA
V
COM
= 4.5V,
V
NC
or V
NO
= 0V,
V+ = 5.5V, V- = 0V
COM On Leakage Current
(Note 8)
I
COM(ON)
-0.4
-0.04
0.4
nA
V
COM
= 4.5V,
V
NC
or V
NO
= 4.5V,
V+ = 5.5V, V- = 0V
T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
75
-2.5
2.5
-5.0
5.0
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
C, E
M
C, E
M
C, E
M
-5.0
5.0
-2.5
2.5
-20.0
20.0
-5.0
5.0
M
C, E
T
A
= +25°C
-0.2
-0.04
0.2
C, E
M
C, E
M
-0.1
-0.01
0.1
-0.1
-0.01
0.1
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
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
I
INH
µA
V
IN
= 2.4V, all others = 0.8V
-1.0
0.005
1.0
Input Current with Input
Voltage Low
I
INL
µA
V
IN
= 0.8V, all others = 2.4V
-1.0
0.005
1.0
SWITCH
DIGITAL LOGIC INPUT
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
_______________________________________________________________________________________
5
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.)
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
SYMBOL
MIN
TYP
MAX
(Note 2)
UNITS
Turn-On Time
t
ON
160
250
ns
CONDITIONS
V
COM
= 3V, Figure 2
Turn-Off Time
t
OFF
ns
Positive Supply Current
I+
-1.0
0.01
1.0
µA
V
COM
= 3V, Figure 2
All channels on or off, V
IN
= 0V or V+,
V+ = 5.5V, V- = 0V
60
125
PARAMETER
SYMBOL
MIN
TYP
MAX
(Note 2)
UNITS
Analog Signal Range
V
COM,
V
NO,
V
NC
0V
V+
V
CONDITIONS
(Note 3)
On-Resistance
R
ON
75
185
V+ = 3V, V- = 0V,
V
NC or
V
NO
= 1.5V,
I
COM
= 1.0mA,
V
INH
= 2.4V,
V
INL
= 0.8V
-0.2
-0.04
0.2
M
T
A
= +25°C
T
A
= +25°C
C, E
-5.0
5.0
NC or NO Off Leakage
Current (Note 8)
I
NC(OFF)
or
I
NO(OFF)
-0.2
-0.01
0.2
nA
V
COM
= 0V,
V
NC
or V
NO
= 3V,
V+ = 3.6V, V- = 0V
COM Off Leakage Current
(Note 8)
I
COM(OFF)
-0.2
-0.01
0.2
nA
V
COM
= 3V,
V
NC
or V
NO
= 0V,
V+ = 3.6V, V- = 0V
COM On Leakage Current
(Note 8)
I
COM(ON)
-0.4
-0.04
0.4
nA
V
COM
= 3V,
V
NC
or V
NO
= 3V,
V+ = 3.6V, V- = 0V
-2.5
2.5
-20.0
20.0
-2.5
2.5
-5.0
5.0
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
C, E
M
C, E
M
C, E
M
-5.0
5.0
C, E
M
T
A
= +25°C
C, E
M
-0.1
-0.01
0.1
-0.1
-0.01
0.1
C, E
T
A
= T
MIN
to T
MAX
T
A
= +25°C
M
C, E, M
250
175
SWITCH
TEMP.
RANGE
Power-Supply Range
V+
V
2.7
16
Break-Before-Make Time
Delay (Note 3)
t
D
10
20
ns
MAX383 only
Charge Injection
(Note 3)
V
CTE
pC
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0
2
5
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
300
175
Negative Supply Current
I-
-1.0
-0.01
1.0
µA
All channels on or off, V
IN
= 0V or V+,
V+ = 5.5V, V- = 0V
DYNAMIC
SUPPLY
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