19-0347; Rev 1; 10/97
Precision, Single-Supply,
SPST Analog Switches
_______________General Description
The MAX323/MAX324/MAX325 are precision, dual,
SPST analog switches. They are single-supply devices
designed to operate from +2.7V to +16V. The MAX323
has two normally open (NO) switches, and the MAX324
has two normally closed (NC) switches. The MAX325
has one NO and one NC switch. Low power consump-
tion (5µW) makes these parts ideal for battery-powered
equipment. These switches offer low leakage currents
(100pA max) and fast switching speeds (t
ON
= 150ns
max, t
OFF
= 100ns max).
When powered from a 5V supply, the MAX323 series
offers 2Ω max matching between channels, 60Ω max
on-resistance, and 6Ω max R
ON
flatness.
These switches also offer 5pC max charge injection,
and a minimum of 2000V ESD per Method 3015.7.
For equivalent devices specified for dual-supply opera-
tion, see the MAX320/MAX321/MAX322 data sheet. For
quad versions of the MAX320 series, see MAX391/
MAX392/MAX393 data sheet.
____________________________Features
o
Low On-Resistance (R
ON
), 60Ω max (33Ω typ)
o
R
ON
Matching Between Channels <2Ω
o
R
ON
Flatness <6Ω Max
o
Guaranteed Charge Injection <5pC
o
Single-Supply Operation (+2.7V to +16V)
o
Low Power Consumption, <5µW
o
Low Leakage Current Over Temperature,
<2.5nA at +85°C
o
Fast Switching: t
ON
<150ns, t
OFF
<100ns
o
Guaranteed Break-Before-Make (MAX325 only)
o
TTL/CMOS Logic Compatible
MAX323/MAX324/MAX325
______________Ordering Information
PART
MAX323CPA
MAX323CUA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 µMAX
________________________Applications
Battery-Operated Systems Sample-and-Hold Circuits
Heads-Up Displays
Test Equipment
Guidance and Control Systems
Communications Systems
Audio and Video Switching Military Radios
+3V, +5V DACs and ADCs PBX, PABX
MAX323CSA
0°C to +70°C
8 SO
MAX323C/D
0°C to +70°C
Dice*
MAX323EPA
-40°C to +85°C
8 Plastic DIP
MAX323ESA
-40°C to +85°C
8 SO
MAX323EJA
-40°C to +85°C
8 CERDIP**
MAX323MJA
-55°C to +125°C
8 CERDIP**
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
MAX323
NO1
1
COM1
2
IN2
3
V-
4
DIP/SO/µMAX
MAX323
LOGIC
SWITCH
0
1
OFF
ON
8
7
6
5
MAX324
V+
IN1
COM2
NO2
NC1
1
COM1
2
IN2
3
V-
4
DIP/SO/µMAX
MAX324
LOGIC
SWITCH
0
1
ON
OFF
8
7
6
5
MAX325
V+
IN1
COM2
NC2
NO1
1
COM1
2
IN2
3
V-
4
DIP/SO/µMAX
LOGIC
0
1
MAX325
SWITCH 1
OFF
ON
SWITCH 2
ON
OFF
8
7
6
5
V+
IN1
COM2
NC2
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Precision, Single-Supply,
SPST Analog Switches
MAX323/MAX324/MAX325
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to GND
V+ .........................................................................-0.3V to +17V
IN_, COM_, NC_, NO_ (Note 1)..................-0.3V to (V+ + 0.3V)
Continuous Current (any terminal) ......................................30mA
Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ............................100mA
ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation
Plastic DIP (derate 9.09mW/°C above +70°C) ..............727mW
Narrow SO (derate 5.88mW/°C above +70°C) ..............471mW
CERDIP (derate 8.00mW/°C above +70°C) ...................640mW
µMAX (derate 4.10mW/°C above +70°C) ......................330mW
Operating Temperature Ranges
MAX32_C_ _ .........................................................0°C to +70°C
MAX32_E_ _.......................................................-40°C to +85°C
MAX32_MJA ....................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+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—Single +5V Supply
(V+ = 5V ±10%, GND = 0V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
V
COM,
V
NO,
V
NC
R
ON
(Note 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
= 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
C, E
M
C, E
M
C, E
M
-0.1
-5
-40
-0.1
-5
-40
-0.2
-10
-50
0.01
2
0.8
0
33
V+
60
75
2
4
6
8
0.1
5
40
0.1
5
40
0.2
10
50
nA
nA
nA
V
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
On-Resistance
On-Resistance Match
Between Channels (Note 4)
On-Resistance Flatness
(Notes 3, 5)
V+ = 4.5V,
I
COM
= 1.0mA,
V
NO
or V
NC
= 3.5V
V+ = 5V,
∆R
ON
I
COM
= 1.0mA,
V
NO
or V
NC
= 3V
V+ = 5V,
R
FLAT(ON)
I
COM
= 1.0mA,
V
NO
or V
NC
= 1V, 2V, 3V
I
NO(OFF)
or
I
NC(OFF)
Ω
Ω
Ω
NO or NC Off Leakage
Current (Note 6)
V+ = 5.5V,
V
COM
= 1V,
V
NO
or V
NC
= 4.5V
COM Off Leakage Current
(Note 6)
V+ = 5.5V,
I
COM(OFF)
V
COM
= 4.5V,
V
NO
or V
NC
= 1V
V+ = 5.5V,
V
COM
= 5V, or
V
NO
or V
NC
= 5V
COM On Leakage Current
(Note 6)
I
COM(ON)
2
_______________________________________________________________________________________
Precision, Single-Supply,
SPST Analog Switches
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = 5V ±10%, 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)
Off Isolation (Note 7)
Crosstalk (Note 8)
NC or NO Capacitance
COM Off Capacitance
COM On Capacitance
SUPPLY
Power-Supply Range
Positive Supply Current
LOGIC INPUT
Input Voltage Low
Input Voltage High
V
INL
V
INH
2.4
0.8
V
V
I+
V+ = 5.5V, V
IN
= 0V or V+, all channels on or off
2.7
-1
0.0001
16
1
V
µA
C
OFF
t
ON
t
OFF
t
D
Q
OIRR
V
NO
or V
NC
= 3V
V
NO
or V
NC
= 3V
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
2
1
72
85
9
9
22
5
25
85
150
240
100
150
ns
ns
ns
pC
dB
dB
pF
pF
pF
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
MAX323/MAX324/MAX325
MAX325 only, R
L
= 300Ω, C
L
= 35pF
C
L
= 1.0nF, V
GEN
= 0V,
R
GEN
= 0V, Figure 4
R
L
= 50Ω, 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
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
C
COM(OFF)
f = 1MHz, Figure 7
C
COM(ON)
f = 1MHz, Figure 8
_______________________________________________________________________________________
3
Precision, Single-Supply,
SPST Analog Switches
MAX323/MAX324/MAX325
ELECTRICAL CHARACTERISTICS—Single +3.3V Supply
(V+ = 3.0V to 3.6V, GND = 0V, V
INH
= 2.4V, V
INL
= 0.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
V
COM,
V
NO,
V
NC
R
ON
(Note 3)
V+ = 3V,
I
COM
= 1.0mA,
V
NO
or V
NC
= 1.5V
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
2
5
1
5
40
160
0
83
V+
175
275
400
500
125
175
V
SYMBOL
CONDITIONS
MIN
TYP
(Note 2)
MAX
UNITS
Channel On-Resistance
DYNAMIC
Turn-On Time (Note 3)
Turn-Off Time (Note 3)
Break-Before-Make Time
Delay (Note 3)
Charge Injection (Note 3)
SUPPLY
Positive Supply Current
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Ω
t
ON
t
OFF
t
D
Q
V
NO
or V
NC
= 1.5V
V
NO
or V
NC
= 1.5V
MAX325 only,
R
L
= 300Ω, C
L
= 35pF
C
L
= 1.0nF,
V
GEN
= 0V, R
GEN
= 0V
ns
ns
ns
pC
I+
V+ = 3.6V, V
IN
= 0V or V+, all channels on or off
-1
1
µA
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.
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 +25°C.
Off Isolation = 20 log
10
[ V
COM
⁄ (V
NC or
V
NO)
], V
COM
= output, V
NC or
V
NO
= input to off switch.
Between any two switches.
4
_______________________________________________________________________________________
Precision, Single-Supply,
SPST Analog Switches
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
MAX323/MAX324/MAX325
R
ON
vs. V
COM
MAX323-01
R
ON
vs. V
COM
OVER TEMPERATURE
A: V+ = 3V
B: V+ = 5V
C: V+ = 12V
MAX323-02
∆R
ON
vs. V
COM
OVER TEMPERATURE
A:
B:
C:
D:
T
A
= -55°C
T
A
= +25°C
T
A
= +85°C
T
A
= +125°C
MAX323-03
80
70
60
A
R
ON
(Ω)
60
V+ = 5V
50
D
40
R
ON
(Ω)
30
B
20
A
A:
B:
C:
D:
1
2
3
T
A
= -55°C
T
A
= +25°C
T
A
= +85°C
T
A
= +125°C
4
5
1
0.8
C
∆R
ON
(Ω)
50
40
30
20
10
0
0
2
4
6
V
COM
(V)
8
10
12
C
B
0.6
D
0.4
10
0
0
V
COM
(V)
0.2
A
0
0
C
B
1
2
3
4
5
V
COM
(V)
ON LEAKAGE CURRENT vs. TEMPERATURE
MAX323-04
OFF LEAKAGE CURRENT vs. TEMPERATURE
MAX323-05
CHARGE INJECTION vs. V
COM
V+ = 5V
2
1
Q (pC)
0
-1
-2
-3
MAX323-06
100
10
1
0.1
0.01
100
10
OFF LEAKAGE (nA)
1
0.1
0.01
V+ = 5.5V
V
COM
= 1V
V
NC
OR V
NO
= 1V
3
ON LEAKAGE (nA)
0.001
0.0001
-55 -35 -15 5
25 45 65
85 105 125
TEMPERATURE (°C)
0.001
0.0001
-55 -35 -15
5
25
45 65
85 105 125
TEMPERATURE (°C)
0
1
2
3
4
5
V
COM
(V)
SUPPLY CURRENT vs. TEMPERATURE
9
8
7
I+ (nA)
6
5
4
3
2
1
0
-55 -35 -15
5
25 45 65
85 105 125
TEMPERATURE (°C)
V+ = 5V
IN1, IN2 = GND OR V+
MAX323-07
10
_______________________________________________________________________________________
5
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