19-0185; Rev 1; 11/94
Precision, CMOS Analog Switches
_______________General Description
The MAX317/MAX318/MAX319 are precision, CMOS,
monolithic analog switches. The single-pole single-
throw (SPST) MAX317 is normally closed (NC), the
SPST MAX318 is normally open (NO), and the single-
pole double-throw (SPDT) MAX319 has one normally
open and one normally closed switch. All three parts
offer low on resistance (less than 35Ω), guaranteed to
match within 2Ω between channels and to remain flat
over the analog signal range (∆3Ω max). They also
offer low leakage (less than 250pA at +25°C and less
than 6nA at +85°C) and fast switching (turn-on time
less than 175ns and turn-off time less than 145ns).
The MAX317/MAX318/MAX319 are fabricated with
Maxim’s new improved silicon-gate process. Design
improvements guarantee extremely low charge injec-
tion (10pC), low power consumption (35µW), and elec-
trostatic discharge (ESD) greater than ±2000V. The
44V maximum breakdown voltage allows rail-to-rail ana-
log signal handling capability.
____________________________Features
o
Low On Resistance <20Ω Typical (35Ω Max)
o
Guaranteed Matched On Resistance Between
Channels <2Ω
o
Guaranteed Flat On Resistance over Analog
Signal Range
∆3Ω
Max
o
Guaranteed Charge Injection <10pC
o
Guaranteed Off-Channel Leakage <6nA at +85°C
o
ESD Guaranteed > 2000V per Method 3015.7
o
Single-Supply Operation (+10V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
o
TTL-/CMOS-Logic Compatible
o
Rail-to-Rail Analog Signal Handling Capability
MAX317/MAX318/MAX319
______________Ordering Information
PART
MAX317CPA
MAX317CSA
MAX317CJA
MAX317C/D
MAX317EPA
MAX317ESA
MAX317EJA
MAX317MJA
TEMP. RANGE
0°C to +70°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
PIN-PACKAGE
8 Plastic DIP
8 SO
8 CERDIP
Dice*
8 Plastic DIP
8 SO
8 CERDIP
8 CERDIP
________________________Applications
Sample-and-Hold Circuits
Guidance and Control Systems
Heads-Up Displays
Test Equipment
Military Radios
Communications Systems
Battery-Powered Systems
PBX, PABX
Ordering Information continued on last page.
* Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
COM
N.C.
1
2
8
7
6
NC
V-
IN
VL
COM
N.C.
1
2
8
7
6
NO
V-
IN
VL
COM
NC
1
2
8
7
6
NO
V-
IN
VL
GND
3
V+
4
GND
3
V+
4
GND
3
V+
4
MAX317
DIP/SO
MAX317
LOGIC
SWITCH
0
1
ON
OFF
5
MAX318
DIP/SO
MAX318
LOGIC
SWITCH
0
1
OFF
ON
5
MAX319
DIP/SO
MAX319
NC
ON
OFF
5
LOGIC
0
1
NO
OFF
ON
N.C. = No Connect
NC = Normally Closed
SWITCHES SHOWN FOR LOGIC "0" INPUT
_______________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.
Precision, CMOS Analog Switches
MAX317/MAX318/MAX319
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V-
V+....................................................................................+44V
GND ................................................................................+25V
V
L
.................................................(GND - 0.3V) to (V+ + 0.3V)
IN, COM, NC, NO....................(V- - 2V) to (V+ + 2V) or 30mA,
whichever occurs first
Continuous Current (any terminal) .....................................30mA
Peak Current, NC, NO, COM
(pulsed at 1ms, 10% duty cycle max)..........................100mA
ESD .................................................................................±2000V
Note 1:
All leads are soldered or welded to PC board.
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.
Continuous Power Dissipation (T
A
= +70°C) (Note 1)
Plastic DIP (derate 9.09mW/°C above +70°C)............727mW
SO (derate 5.88mW/°C above +70°C) ........................471mW
CERDIP (derate 8.00mW/°C above +70°C) ................640mW
Operating Temperature Ranges:
MAX31_C_ _.......................................................0°C to +70°C
MAX31_E_ _ ....................................................-40°C to +85°C
MAX31_MJA..................................................-55°C to +125°C
Storage Temperature Range ............................-55°C to +150°C
Lead Temperature (soldering, 10sec) ............................+300°C
ELECTRICAL CHARACTERISTICS — Dual Supplies
(V+ = 15V, V- = -15V, V
L
= 5V, GND = 0V, V
INL
= 0.8V, V
INH
= 2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Analog-Signal Range
SYMBOL
V
COM,
(Note 3)
V
NO,
V
NC
CONDITIONS
TEMP.
MIN
TYP
MAX
(Note 2)
15
20
35
30
45
2
3
3
5
UNITS
V
-15
C, E
M
On Resistance
On Resistance Match
Between Channels (Note 4)
On Resistance Flatness
(Note 4)
R
ON
V
COM
= ±12.5V,
I
(NC or NO)
= -10mA,
V+ = 13.5V, V- = -13.5V
I
(NC OR NO)
= -10mA,
V
COM
= 10V or -10V,
V+ = 15V, V- = -15V
I
(NC OR NO)
= -10mA,
V
COM
= 5V or -5V,
V+ = 15V, V- = -15V
V+ = 16.5V, V- = -16.5V,
V
COM
= ±15.5V,
V
NC
or V
NO
=
±15.5V
MAX317,
MAX318
T
A
= +25°C
Ω
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
C, E
M
T
A
= +25°C
C, E
M
T
A
= +25°C
-0.25
-6
-20
-0.25
-6
-20
-0.75
-10
-60
-0.4
-10
-40
-0.75
-10
-60
-0.1
-0.1
R
ON
R
ON
INC
(OFF)
or
INO
(OFF)
Ω
Ω
0.25
6
20
0.25
6
20
0.75
10
60
0.4
10
40
0.75
10
60
nA
nA
nA
NO or NC Off Leakage Current
COM Off Leakage Current
ICOM
(OFF)
V+ = 16.5V,
V- = -16.5V,
V
COM
= ±15.5V,
–
V
NC
or V
NO
= +15.5V
MAX319
C, E
M
T
A
= +25°C
C, E
M
T
A
= +25°C
COM On Leakage Current
ICOM
(ON)
V+ = 16.5V,
V- = -16.5V,
V
NC
or V
NO
= V
D
=
±15.5V
MAX317,
MAX318
MAX319
C, E
M
2
________________________________________________________________________________________________
Precision, CMOS Analog Switches
ELECTRICAL CHARACTERISTICS — Dual Supplies (continued)
(V+ = 15V, V- = -15V, V
L
= 5V, GND = 0V, V
INL
= 0.8V, V
INH
= 2.4V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
MAX317/MAX318/MAX319
PARAMETER
LOGIC INPUT
Logic Input Current
(Input Voltage High)
Logic Input Current
(Input Voltage Low)
DYNAMIC
Turn-On Time
Turn-Off Time
Transition Time
Break-Before-Make Interval
Charge Injection
Off Isolation (Note 5)
Crosstalk (Note 6)
COM Off Capacitance
Off Capacitance NC or NO
Channel-On Capacitance
COM Terminal
SUPPLY
Positive Supply Current
Negative Supply Current
Logic Supply Current
Ground Current
SYMBOL
CONDITIONS
TEMP.
MIN
TYP
MAX
(Note 2)
UNITS
I
IH
I
IL
V
IN
= 2.4V
V
IN
= 0.8V
-0.5
-0.5
0.005
0.005
0.5
0.5
µA
µA
t
ON
t
OFF
t
TRANS
t
D
Q
OIRR
MAX317, MAX318, Figure 2,
V
COM
= ±10V
MAX317, MAX318, Figure 2,
V
COM
= ±10V
MAX319, Figure 3,
V
NO
= ±10V, V
NC
=
±10V
MAX319, Figure 4,
V
NO
= V
NC
= ±10V
V
GEN
= 0V, Figure 5
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 7
R
L
= 50Ω, C
L
= 5pF,
f = 1MHz, Figure 8
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
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
5
100
60
175
250
145
210
175
250
ns
ns
ns
ns
13
3
68
85
8
8
30
35
10
pC
dB
dB
pF
pF
pF
C
COM(OFF)
V
COM
= 0V, f = 1MHz, Figure 8
C
(OFF)
C
COM(ON)
V
COM
= 0V, f = 1MHz, Figure 8
V
S
= 0V, f = 1MHz,
Figure 9
MAX317,
MAX318
MAX319
V
IN
= 0V or 5V, V+ = 16.5V,
V- = -16.5V
I-
I
L
I
GND
V
IN
= 0V or 5V, V+ = 16.5V,
V- = -16.5V
V
IN
= 0V or 5V, V+ = 16.5V,
V- = -16.5V
V
IN
= 0V or 5V, V+ = 16.5V,
V- = -16.5V
I+
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
-1
-5
-1
-5
-1
-5
-1
-5
0.0001
-0.0001
0.0001
-0.0001
1
5
1
5
1
5
1
5
µA
µA
µA
µA
_______________________________________________________________________________________
3
Precision, CMOS Analog Switches
MAX317/MAX318/MAX319
ELECTRICAL CHARACTERISTICS — Single Supply
(V+ = 12V, V- = 0V, V
L
= 5V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
SWITCH
Analog-Signal Range
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
V
COM,
V
NO,
V
NC
R
(ON)
t
ON
t
OFF
t
D
Q
(Note 3)
0
12
V
Drain-Source On Resistance
DYNAMIC
Turn-On Time
Turn-Off Time
Break-Before-Make
Time Delay
Charge Injection
SUPPLY
Positive Supply Current
Negative Supply Current
Logic Supply Current
Ground Current
I
(NC or NO)
= -10mA, V
COM
= 3.8V, V+ = 10.8V
V
COM
= 8V, Figure 2
V
COM
= 8V, Figure 2
MAX319, R
L
= 1000Ω, C
L
= 35pF,
Figure 4
C
L
= 10nF, V
GEN
= 0V, R
GEN
= 0V,
Figure 5
V+ = 13.2V, all channels on or off,
V
IN
= 0V or 5V, V
L
= 5.25V
V+ = 13.2V, all channels on or off,
V
IN
= 0V or 5V, V
L
= 5.25V
V
L
= 5.25V, all channels on or off,
V
IN
= 0V or 5V
V
L
= 5.25V, all channels on or off,
V
IN
= 0V or 5V
40
110
40
60
2
100
Ω
ns
ns
ns
10
pC
I+
I-
I
L
I
GND
0.0001
0.0001
0.0001
-0.0001
µA
µA
µA
µA
Note 2:
Typical values are for
design aid only,
not guaranteed, not subject to production testing.
Note 3:
Guaranteed by design.
Note 4:
On resistance match between channels and flatness are guaranteed only with bipolar-supply operation.
Note 5:
Off Isolation = 20log
10
(
V
COM
)
, V
COM
= output, V
NC
or V
NO
= input to off switch.
V
NC
or V
NO
Note 6:
Between any two switches.
4
_______________________________________________________________________________________
Precision, CMOS Analog Switches
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted).
MAX317/MAX318/MAX319
ON RESISTANCE vs. V
COM
AND
POWER-SUPPLY VOLTAGE
MAX317-01
ON RESISTANCE vs. V
COM
AND
TEMPERATURE
MAX317-02
ON RESISTANCE vs. V
COM
AND
TEMPERATURE
V- = 0V
120
100
R
ON
(Ω)
80
60
V+ = 5V
MAX317-03
50
45
40
35
R
ON
(Ω)
30
25
20
15
10
5
R
ON
(Ω)
A: V+ = 5V,
V- = -5V
B: V+ = 10V,
V- = -10V
C: V+ = 15V,
V- = -15V
D: V+ = 20V,
V- = -20V
35
30
25
20
15
V+ = 15V
V- = -15V
T
A
= +125°C
T
A
= +85°C
140
A
B
C
D
T
A
= -55°C
10
5
T
A
= +25°C
40
20
-20
-10
0
V
COM
(V)
10
20
0
5
10
V
COM
(V)
15
20
V+ = 10V
V+ = 15V
V+ = 20V
-20
-10
0
V
COM
(V)
10
20
ON RESISTANCE vs. V
COM
(SINGLE-SUPPLY)
MAX317-04
OFF LEAKAGE CURRENTS vs.
TEMPERATURE
MAX317-05
ON LEAKAGE CURRENTS vs.
TEMPERATURE
V+ = 16.5V
V- = -16.5V
V
COM
= ±15V
V
NC
OR V
NO
= ±15V
MAX317-06
70
60
50
R
ON
(Ω)
T
A
= +85°C
40
T
A
= +25°C
30
20
10
0
5
10
V
COM
(V)
15
V+ = 12V
V- = 0V
T
A
= +125°C
100
10
1
0.1
0.01
V+ = 16.5V
V- = -16.5V
V
COM
= ±15V
V
NC
OR V
NO
=
+15V
100
10
1
0.1
0.01
0.001
0.0001
OFF LEAKAGE
0.001
0.0001
20
-55
+25
TEMPERATURE (°C)
+125
ON LEAKAGE
-55
+25
TEMPERATURE (°C)
+125
CHARGE INJECTION vs.
ANALOG VOLTAGE
MAX317-07
SUPPLY CURRENT vs. TEMPERATURE
A: I+ at V+ = 16.5V
B: I- at V- = -16.5V
C: I
L
at V
L
= 5V
A
B
C
MAX317-08
60
40
20
Q (pC)
0
-20
-40
-60
-20 -15 -10
-5
0
V
COM
(V)
5
10
15
V+ = 15V
V- = -15V
100
10
1
0.1
0.01
0.001
0.0001
20
I+, I-, I
L
(µA)
-55
+25
TEMPERATURE (°C)
+125
_______________________________________________________________________________________
5
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