Maxim MAX381MJE Precision, low-voltage analog switch Datasheet

19-0300; Rev 0; 9/94
Precision, Low-Voltage Analog Switches
____________________________Features
♦ Single-Supply Operation (+3V to +15V)
Bipolar-Supply Operation (±3V to ±8V)
The MAX381/MAX383/MAX385 are precision, low-voltage analog switches. The single-pole single-throw
MAX381 and double-pole single-throw MAX385 dual
switches are normally open. The single-pole doublethrow 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 leakage (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).
♦ Pin-Compatible with DG401/DG403/DG405
♦ Low On-Resistance, 20Ω Typical (35Ω Max)
♦ Guaranteed Matched On-Resistance Between
Channels, <2Ω
♦ Guaranteed Flat On-Resistance over Specified
Analog Signal Range, <4Ω
♦ Guaranteed Charge Injection, <5pC
♦ Guaranteed Off-Channel Leakage, <2.5nA at +85°C
♦ TTL/CMOS-Logic Compatible with 3V, 5V, ±3V,
and ±5V Supplies
♦ Rail-to-Rail Analog Signal Handling Capability
The MAX381/MAX383/MAX385 are fabricated with
Maxim’s low-voltage silicon-gate process for high system accuracy. Design improvements guarantee
extremely low charge injection (<5pC) and low power
consumption (<10µW).
These monolithic switches operate with a single positive 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.
______________Ordering Information
PART
________________________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
TEMP. RANGE
PIN-PACKAGE
MAX381CPE
0°C to +70°C
16 Plastic DIP
MAX381CSE
MAX381C/D
MAX381EPE
MAX381ESE
MAX381EJE
MAX381MJE
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
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP**
16 CERDIP**
Ordering Information continued on last page.
* Dice are tested at TA = +25°C only.
** Contact factory for package availability.
___________________________Pin Configurations/Block Diagrams/Truth Tables
TOP VIEW
COM1 1
16 NO1
COM1 1
N.C. 2
15 IN1
N.C. 3
14 V-
N.C. 4
13 GND
NC3 4
12 N.C.
NC4 5
N.C. 5
MAX381
N.C. 6
11 V+
N.C. 7
10 IN2
COM2 8
9
MAX381
LOGIC IN
SWITCH
N.C. = NOT INTERNALLY
CONNECTED
0
1
PWR OFF
OFF
ON
OFF
NO2
16 NO1
15 IN1
N.C. 2
COM3 3
COM4
14 V-
N.C. 7
LOGIC IN
MAX383
NC
COM
15 IN1
N.C. 2
NO3 4
12 N.C.
NO4 5
COM4
N.C. 7
N02
COM2 8
NO
14 V13 GND
12 N.C.
MAX385
6
10 IN2
9
COM2 8
16 NO1
COM3 3
13 GND
MAX383 11 V+
6
COM1 1
11 V+
10 IN2
9
NO2
MAX385
LOGIC IN
COM, NO
0
NC
COM
OFF
0
OFF
1
NO
OFF
COM
1
ON
PWR OFF
OFF
OFF
OFF
PWR OFF
OFF
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
MAX381/MAX383/MAX385
_______________General Description
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
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 (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
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, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
TEMP.
RANGE
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match Between
Channels (Note 4)
On-Resistance Flatness
(Note 4)
NC or NO Off Leakage Current
(Note 5)
COM Off Leakage Current
(Note 5)
COM On Leakage Current
(Note 5)
2
VCOM,
VNO,
VNC
RON
∆RON
(Note 3)
V+ = 4.5V, V- = -4.5V,
VNC or VNO = ±3.5V,
ICOM = -10mA,
VINH = 2.4V,
VINL = 0.8V
VNC or VNO = ±3V,
ICOM = -10mA,
V+ = 5V, V- = -5V
VNC or VNO = 3V, 0V,
RFLAT(ON) -3V; ICOM = -10mA,
V+ = 5V; V- = -5V
INC(OFF)
or
INO(OFF)
ICOM(OFF)
ICOM(ON)
VCOM = ±4.5V,
VNC or VNO = +4.5V,
V+ = 5.5V,V- = -5.5V
VCOM = ±4.5V,
VNC or VNO = +4.5V,
V+ = 5.5V, V- = -5.5V
VCOM = ±4.5V,
VNC or VNO = ±4.5V,
V+ = 5.5V, V- = -5.5V
VTA =
+25°C
V+
C, E
20
35
M
20
30
TA = TMIN
C, E, M
to TMAX
TA =
+25°C
TA = TMIN
to TMAX
TA =
+25°C
TA = TMIN
to TMAX
TA =
+25°C
C, E, M
0.5
2
C, E, M
4
C, E, M
4
C, E, M
6
C, E
-0.2
-0.01
0.2
M
-0.1
-0.01
0.1
-2.5
2.5
-5.0
5.0
C, E
-0.2
-0.01
0.2
M
-0.1
-0.01
0.1
TA = TMIN C, E
to TMAX
M
-2.5
2.5
-5.0
5.0
C, E
-0.4
-0.04
0.4
M
-0.2
-0.04
0.2
TA =
+25°C
TA = TMIN C, E
to TMAX
M
Ω
45
TA = TMIN C, E
to TMAX
M
TA =
+25°C
V
-5.0
5.0
-20.0
20.0
_______________________________________________________________________________________
Ω
Ω
nA
nA
nA
Precision, Low-Voltage Analog Switches
(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
DIGITAL LOGIC INPUT
Input Current with Input
Voltage High
IINH
VIN = 2.4V, all others = 0.8V
-1.0
0.005
1.0
µA
Input Current with Input
Voltage Low
IINL
VIN = 0.8V, all others = 2.4V
-1.0
0.005
1.0
µA
Logic High Input Voltage
VAH
TA = TMIN to TMAX
Logic Low Input Voltage
VAL
TA = TMIN to TMAX
2.4
V
0.8
V
DYNAMIC
Turn-On Time
tON
VCOM = 3V, Figure 2
Turn-Off Time
tOFF
VCOM = 3V, Figure 2
Break-Before-Make
Time Delay (Note 3)
100
TA = +25°C
TA = TMIN to TMAX
175
225
TA = +25°C
60
TA = TMIN to TMAX
100
150
MAX383 only, Figure 3
TA = +25°C
Charge Injection
(Note 3)
VCTE
CL = 1.0nF, VGEN = 0V,
RGEN = 0Ω, Figure 4
TA = +25°C
2
Off Isolation (Note 6)
VISO
TA = +25°C
72
dB
Crosstalk (Note 7)
VCT
TA = +25°C
90
dB
f = 1MHz, Figure 7
TA = +25°C
12
pF
CCOM(OFF) f = 1MHz, Figure 7
TA = +25°C
12
pF
Channel On Capacitance CCOM(ON) f = 1MHz, Figure 8
TA = +25°C
39
pF
Off Capacitance
COFF
COM Off Capacitance
20
ns
tD
RL = 100Ω, CL = 5pF,
f = 1MHz, Figure 5
RL = 50Ω, CL = 5pF,
f = 1MHz, Figure 6
10
ns
ns
5
pC
SUPPLY
Power-Supply Range
±3
±8
V
Positive Supply Current
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
Note 2:
Note 3:
Note 4:
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.
∆RON = ∆RON(max) - ∆RON(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 = 20log10 VCOM/VNC or VNO, VCOM = output, VNC 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
MAX381/MAX383/MAX385
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
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
TEMP.
RANGE
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match
Between Channels (Note 4)
On-Resistance Flatness
(Note 4)
NC or NO Off Leakage
Current (Note 8)
COM Off Leakage Current
(Note 8)
COM On Leakage Current
(Note 8)
VCOM,
VNO,
VNC
RON
∆RON
(Note 3)
V+ = 5.0V, V- = 0V,
VNC or VNO = 3.5V,
ICOM = 1.0mA,
VINH = 2.4V,
VINL = 0.8V
VNC or VNO = 3V,
ICOM = 1.0mA,
V+ = 5V
VNC or VNO = 3V, 2V,
RFLAT(ON) 1V; ICOM = 1.0mA;
V+ = 5V; V- = 0V
INC(OFF)
or
INO(OFF)
VCOM = 0V,
VNC or VNO = 4.5V,
V+ = 5.5V, V- = 0V
VCOM = 4.5V,
ICOM(OFF) VNC or VNO = 0V,
V+ = 5.5V, V- = 0V
ICOM(ON)
VCOM = 4.5V,
VNC or VNO = 4.5V,
V+ = 5.5V, V- = 0V
0V
TA = +25°C
TA = TMIN
to TMAX
C, E
25
60
C, E, M
75
0.5
Ω
4
TA = +25°C C, E, M
6
TA = TMIN
to TMAX
8
TA = TMIN
to TMAX
TA = +25°C
TA = TMIN
to TMAX
TA = +25°C
TA = TMIN
to TMAX
Ω
2
C, E, M
TA = +25°C
V
65
M
TA = +25°C C, E, M
TA = TMIN
to TMAX
V+
Ω
C, E, M
C, E
-0.2
-0.01
0.2
M
-0.1
-0.01
0.1
C, E
-2.5
M
-5.0
C, E
-0.2
-0.01
0.2
M
-0.1
-0.01
0.1
C, E
-2.5
M
-5.0
C, E
-0.4
-0.04
0.4
M
-0.2
-0.04
0.2
C, E
-5.0
5.0
M
-20.0
20.0
2.5
nA
5.0
2.5
nA
5.0
nA
DIGITAL LOGIC INPUT
Input Current with Input
Voltage High
IINH
VIN = 2.4V, all others = 0.8V
-1.0
0.005
1.0
µA
Input Current with Input
Voltage Low
IINL
VIN = 0.8V, all others = 2.4V
-1.0
0.005
1.0
µA
4
_______________________________________________________________________________________
Precision, Low-Voltage Analog Switches
MAX381/MAX383/MAX385
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.)
PARAMETER
SYMBOL
MIN
CONDITIONS
TYP
(Note 2)
MAX
UNITS
DYNAMIC
Turn-On Time
tON
VCOM = 3V, Figure 2
Turn-Off Time
tOFF
VCOM = 3V, Figure 2
Break-Before-Make Time
Delay (Note 3)
Charge Injection
(Note 3)
tD
VCTE
TA = +25°C
160
TA = TMIN to TMAX
TA = +25°C
60
TA = TMIN to TMAX
MAX383 only
TA = +25°C
CL = 1.0nF, VGEN = 0V,
RGEN = 0Ω
TA = +25°C
250
300
125
175
10
20
2
ns
ns
ns
5
pC
16
V
SUPPLY
Power-Supply Range
V+
2.7
Positive Supply Current
I+
All channels on or off, VIN = 0V or V+,
V+ = 5.5V, V- = 0V
Negative Supply Current
I-
All channels on or off, VIN = 0V or V+,
V+ = 5.5V, V- = 0V
-1.0
0.01
1.0
µA
-1.0
-0.01
1.0
µA
TYP
(Note 2)
MAX
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
TEMP.
RANGE
CONDITIONS
MIN
UNITS
SWITCH
Analog Signal Range
On-Resistance
VCOM,
VNO,
VNC
RON
NC or NO Off Leakage
Current (Note 8)
COM Off Leakage Current
(Note 8)
COM On Leakage Current
(Note 8)
INC(OFF)
or
INO(OFF)
(Note 3)
V+ = 3V, V- = 0V,
VNC or VNO = 1.5V,
ICOM = 1.0mA,
VINH = 2.4V,
VINL = 0.8V
VCOM = 0V,
VNC or VNO = 3V,
V+ = 3.6V, V- = 0V
VCOM = 3V,
ICOM(OFF) VNC or VNO = 0V,
V+ = 3.6V, V- = 0V
ICOM(ON)
VCOM = 3V,
VNC or VNO = 3V,
V+ = 3.6V, V- = 0V
0V
TA = +25°C
TA = TMIN
to TMAX
TA = +25°C
TA = TMIN
to TMAX
TA = +25°C
TA = TMIN
to TMAX
TA = +25°C
TA = TMIN
to TMAX
C, E
V+
75
V
185
M
175
C, E, M
250
C, E
-0.2
-0.01
0.2
M
-0.1
-0.01
0.1
C, E
-2.5
M
-5.0
C, E
-0.2
-0.01
0.2
M
-0.1
-0.01
0.1
C, E
-2.5
M
-5.0
C, E
-0.4
-0.04
0.4
M
-0.2
-0.04
0.2
C, E
-5.0
5.0
M
-20.0
20.0
2.5
Ω
nA
5.0
2.5
nA
5.0
nA
_______________________________________________________________________________________
5
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.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
DIGITAL LOGIC INPUT
Input Current with Input
Voltage High
IINH
VIN = 2.4V, all others = 0.8V
-1.0
0.005
1.0
µA
Input Current with Input
Voltage Low
IINL
VIN = 0.8V, all others = 2.4V
-1.0
0.005
1.0
µA
Turn-On Time (Note 3)
tON
VCOM = 1.5V, Figure 2
TA = +25°C
400
ns
Turn-Off Time (Note 3)
tOFF
VCOM = 1.5V, Figure 2
TA = +25°C
150
ns
MAX383 only
TA = +25°C
CL = 1.0nF,
VGEN = 0V, RGEN = 0Ω
TA = +25°C
DYNAMIC
Break-Before-Make Time
Delay (Note 3)
tD
Charge Injection (Note 3)
VCTE
10
20
ns
1
5
pC
16
V
SUPPLY
Power-Supply Range
V+
Positive Supply Current
I+
All channels on or off, VIN = 0V or V+,
V+ = 3.6V, V- = 0V
-1.0
0.01
1.0
µA
Negative Supply Current
I-
All channels on or off, VIN = 0V or V+,
V+ = 3.6V, V- = 0V
-1.0
-0.01
1.0
µA
2.7
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
RON (Ω)
V+ = 5V, V- = -5V
20
15
10
20
TA = +85°C
15
TA = +25°C
TA = -55°C
10
V+ = 8V, V- = -8V
0
0
-8
-6
-4
-2
0
VCOM (V)
2
4
6
8
80
70
V- = 0V
V+ = 3V
60
50
V+ = 5V
40
30
V+ = 9V
V+ = 15V
V+ = 12V
20
10
5
5
V+ = 2.5V
100
90
TA = +125°C
25
25
6
V+ = 5V
V- = -5V
RON (Ω)
30
120
110
MAX381/3/5-02
V+ = 3V, V- = -3V
30
35
MAX381/3/5-01
35
ON-RESISTANCE vs. VCOM
AND SINGLE-SUPPLY VOLTAGE
MAX381/3/5-03
ON-RESISTANCE vs. VCOM
AND DUAL-SUPPLY VOLTAGES
RON (Ω)
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
0
-5 -4
-3 -2 -1 0
1
VCOM (V)
2
3
4
5
0
2
4
6
8
10
VCOM (V)
_______________________________________________________________________________________
12
14
16
Precision, Low-Voltage Analog Switches
OFF LEAKAGE CURRENT vs.
TEMPERATURE
TA = +25°C
20
TA = -55°C
1
0.1
0.01
0.001
10
0
2
3
4
5
0.01
0.0001
-75
+25
-25
+75
-75
+125
-25
+25
+75
+125
VCOM (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
CHARGE INJECTION
vs. VCOM
SUPPLY CURRENT vs. TEMPERATURE
MAX383 SUPPLY CURRENT vs. LOGIC INPUT
FREQUENCY (BOTH INPUTS DRIVEN)
V+ = 5V
V- = -5V
I+, I- (µA)
1
0
-10
100
10
SUPPLY CURRENT (µA)
20
1000
0.1
I+ at V+ = 5.5V
0.01
V+ = 5V
V- = 0V
-20
0.001
-30
0.0001
I- at V- = -5.5V
MAX381/3/5-09
100
MAX381/3/5-07
30
10
0.1
MAX381-08
1
1
0.001
0.0001
0
10
V+ = 5V
1
0.1
V+ = 3V
0.01
0.001
0.0001
-5 -4
-3 -2 -1 0
1
2
3
4
5
0.00001
+25
-75
VCOM (V)
+125
1
1
1
1
1
10 100 000
0.1
00 .000 0.00 0.0
1
0
INPUT FREQUENCY (kHz)
0
0.0
TEMPERATURE (°C)
MAX383 SUPPLY CURRENT vs. LOGIC
INPUT VOLTAGE (BOTH INPUTS DRIVEN)
1000
100
SUPPLY CURRENT (µA)
Q (pC)
10
ON LEAKAGE (nA)
TA = +85°C
30
V+ = 5.5V, V- = -5.5V
10
MAX381/3/5-10
RON (Ω)
40
V+ = 5.5V, V- = -5.5V
OFF LEAKAGE (nA)
TA = +125°C
50
100
MAX381-05
V+ = 5V
V- = 0V
60
100
MAX381/3/5-04
70
ON LEAKAGE CURRENT vs.
TEMPERATURE
MAX381-06
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
10
1
0.1
V+ = 3V
V+ = 5V
0.01
0.001
0.0001
0 0.5
1 1.5 2 2.5 3 3.5 4 4.5 5
VIN (V)
_______________________________________________________________________________________
7
MAX381/MAX383/MAX385
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
MAX381
MAX383
MAX385
1, 8
1, 3, 6, 8
1, 3, 6, 8
COM_
2–7, 12
2, 7, 12
2, 7, 12
N.C.
Not Internally Connected
9, 16
9, 16
4, 5, 9, 16
NO_
Analog Switch Normally Open Terminal
—
4, 5
—
NC_
Analog Switch Normally Closed Terminal
10, 15
10, 15
10, 15
IN_*
Logic Level Input (Normally Low)
11
11
11
V+
13
13
13
GND
14
14
14
V-
Analog Switch Common Terminal
Analog Signal and Logic Positive Supply Input
Logic Negative Supply Input (Ground)
Analog Signal Negative Supply Input
* IN1 controls COM1 and COM3; IN2 controls COM2 and COM4.
__________Applications Information
+5V
Operation with Supply Voltages
Other than ±5V
The MAX381/MAX383/MAX385 switches operate with
±3.0V to ±8V bipolar supplies and a +3V 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).
D1
V+
MAX381
MAX383
MAX385
*
*
*
*
NO
COM
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, or COM. If power-supply sequencing
is not possible, add two small signal diodes (D1, D2) in
series with supply pins for overvoltage protection
(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 17V. These protection
diodes are not recommended when using a single 3V
supply.
8
VD2
-5V
* INTERNAL PROTECTION DIODES
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
_______________________________________________________________________________________
Precision, Low-Voltage Analog Switches
+5V
+3V
LOGIC
INPUT
tr < 20ns
tf < 20ns
50%
RL = 1000Ω
CL = 35pF
0V
V+
VCOM = +3V (for tON)
tOFF
COM
VOUT
NC or NO
VCOM = -3V (for tOFF)
VOUT
IN
0.9 x VOUT
SWITCH
OUTPUT
MAX381
MAX383
MAX385
LOGIC
INPUT
0V
tON
0.9 x VOUT
VOUT
GND
V-
0V
-5V
REPEAT TEST FOR EACH SWITCH
LOGIC INPUT WAVEFORM IS INVERTED FOR
SWITCHES THAT HAVE THE OPPOSITE LOGIC
SENSE CONTROL.
VOUT = VCOM
(
RL
RL + RON
)
FOR LOAD CONDITIONS, SEE Electrical Characteristics.
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 2. Switching-Time Test Circuit
+5V
MAX383
+3V
LOGIC
INPUT
50%
VCOM = +3V
0V
VOUT1
SWITCH
OUTPUT 1
VCOM = +3V
0.9 x VOUT
COM
V+
NC
COM
NO
VOUT2
0V
0.9 x VOUT
tD
RL1
RL2
0V
SWITCH
OUTPUT 2
VOUT2
CL1
IN
LOGIC
INPUT
VOUT1
GND
V-
CL2
0V
-5V
RL = 1000Ω
CL = 35pF
tD
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
LOGIC 0 INPUT
Figure 3. Break-Before-Make Test Circuit (MAX383 only)
+5V
∆VOUT
MAX381
MAX383
MAX385
V+
RGEN
COM
NC or NO
VOUT
VOUT
IN
VGEN
ON
OFF
ON
CL
GND
V-
0V
-5V
1.0nF
Q = (∆VOUT) (CL)
Figure 4. Charge-Injection Test Circuit
_______________________________________________________________________________________
9
MAX381/MAX383/MAX385
______________________________________________Test Circuits/Timing Diagrams
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
_________________________________Test Circuits/Timing Diagrams (continued)
SIGNAL
GENERATOR
+5V
C
MAX381
MAX383
MAX385
V+
VCOM
IN
ANALYZER
CH A
CH B
FREQUENCY
TESTED
SIGNAL
GENERATOR
ANALYZER
1MHz
AUTOMATIC
SYNTHESIZER
TRACKING
SPECTRUM
ANALYZER
0V or 2.4V
NC or NO
C
V-
GND
RL
OFF ISOLATION = 20log
VCOM
VNC or NO
-5V
Figure 5. Off Isolation
SIGNAL
GENERATOR
+5V
C
MAX381
MAX383
MAX385
50Ω
COM V+
NC OR NO
IN
0V or 2.4V
ANALYZER
CH A
CH B
IN2
NC or NO
0V or 2.4V
COM
GND
FREQUENCY
TESTED
SIGNAL
GENERATOR
ANALYZER
1MHz
AUTOMATIC
SYNTHESIZER
TRACKING
SPECTRUM
ANALYZER
C
V-
RL
-5V
Figure 6. Crosstalk Test Circuit
MAX381
MAX383
MAX385
CAPACITANCE
METER
C
+5V
C
MAX381
MAX383
MAX385
V+
COM
+5V
V+
COM
IN
0V or 2.4V
NC
or NO
GND
V-
C
CAPACITANCE
METER
IN
GND
-5V
Figure 7. Channel-Off Capacitance
10
V-
-5V
Figure 8. Channel-On Capacitance
______________________________________________________________________________________
0V or 2.4V
C
Precision, Low-Voltage Analog Switches
PART
TEMP. RANGE
COM3
(MAX383/MAX385) NO1
COM1
IN1
PIN-PACKAGE
MAX383CPE
0°C to +70°C
16 Plastic DIP
MAX383CSE
MAX383C/D
MAX383EPE
MAX383ESE
MAX383EJE
MAX383MJE
MAX385CPE
MAX385CSE
MAX385C/D
MAX385EPE
MAX385ESE
MAX385EJE
MAX385MJE
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
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
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP**
16 CERDIP**
16 Plastic DIP
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP**
16 CERDIP**
* Dice are tested at TA = +25°C only.
** Contact factory for package availability.
___________________Chip Topography
V-
NC3
(MAX383)
NO3
(MAX385)
GND
0.096"
(2.44mm)
NC4
(MAX383)
NO4
(MAX385)
V+
COM2
NO2
COM4
(MAX383/MAX385)
IN2
0.067"
(1.7mm)
TRANSISTOR COUNT: 57
SUBSTRATE CONNECTED TO V+
______________________________________________________________________________________
11
MAX381/MAX383/MAX385
__Ordering Information (continued)
MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
________________________________________________________Package Information
DIM
E
A
A1
B
C
D
E
e
H
h
L
α
H
INCHES
MAX
MIN
0.069
0.053
0.010
0.004
0.019
0.014
0.010
0.007
0.394
0.386
0.157
0.150
0.050 BSC
0.244
0.228
0.020
0.010
0.050
0.016
8˚
0˚
MILLIMETERS
MIN
MAX
1.35
1.75
0.10
0.25
0.35
0.49
0.19
0.25
9.80
10.00
3.80
4.00
1.27 BSC
5.80
6.20
0.25
0.50
0.40
1.27
0˚
8˚
21-588B
h x 45˚
D
α
A
16-PIN PLASTIC
SMALL-OUTLINE
(NARROW)
PACKAGE
0.127mm
0.004in.
e
B
A1
C
L
DIM
D1
A
A1
A2
A3
B
B1
C
D
D1
E
E1
e
eA
eB
L
α
E
E1
D
A3
A A2
L A1
INCHES
MAX
MIN
0.200
–
–
0.015
0.150
0.125
0.080
0.055
0.022
0.016
0.065
0.050
0.012
0.008
0.765
0.745
0.030
0.005
0.325
0.300
0.280
0.240
0.100 BSC
0.300 BSC
0.400
–
0.150
0.115
15˚
0˚
MILLIMETERS
MIN
MAX
–
5.08
0.38
–
3.18
3.81
1.40
2.03
0.41
0.56
1.27
1.65
0.20
0.30
18.92
19.43
0.13
0.76
7.62
8.26
6.10
7.11
2.54 BSC
7.62 BSC
–
10.16
2.92
3.81
0˚
15˚
21-587A
α
C
e
B1
B
eA
16-PIN PLASTIC
DUAL-IN-LINE
PACKAGE
eB
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.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 1994 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.