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General Description
The MAX4621/MAX4622/MAX4623 are precision, dual,
high-speed analog switches. The single-pole/single-
throw (SPST) MAX4621 and double-pole/single-throw
(DPST) MAX4623 dual switches are normally open
(NO). The single-pole/double-throw (SPDT) MAX4622
has two normally closed (NC) and two NO poles. All
three parts offer low 5
on-resistance guaranteed to
match to within 0.5
between channels and to remain
flat over the full analog signal range (
0.5
max). They
also offer low leakage (<500pA at +25C, <5nA at
+85C) and fast switching times (turn-on time <250ns,
turn-off time <200ns).
These analog switches are ideal in low-distortion appli-
cations and are the preferred solution over mechanical
relays in automatic test equipment or applications
where current switching is required. They have low
power requirements, use less board space, and are more
reliable than mechanical relays.
The MAX4621/MAX4622/MAX4623 are pin-compatible
replacements for the DG401/DG403/DG405, respective-
ly, offering improved overall performance. These mono-
lithic switches operate from a single positive supply
(+4.5V to +36V) or with bipolar supplies (4.5V to 18V)
while retaining CMOS-logic input compatibility.
Features
o
Low On-Resistance: 3
(typ), 5
(max)
o
Guaranteed R
ON
Match Between Channels
(0.5
max)
o
Guaranteed Break-Before-Make Operation
(MAX4622)
o
Guaranteed Off-Channel Leakage <5nA at +85C
o
Single-Supply Operation (+4.5V to +36V)
Bipolar-Supply Operation (4.5V to 18V)
o
TTL/CMOS-Logic Compatible
o
Rail-to-Rail
Analog Signal Handling Capability
o
Pin Compatible with DG401/DG403/DG405
Applications
Reed Relay Replacement
Military Radios
Test Equipment
PBX, PABX Systems
Communication Systems
Audio-Signal Routing
Data-Acquisition Systems
Avionics
MAX4621/MAX4622/MAX4623
Dual, 5
Analog Switches
________________________________________________________________
Maxim Integrated Products
1
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
TOP VIEW
MAX4621
V
L
V+
IN2
NO2
COM2
N.C.
N.C.
N.C.
SO/DIP
MAX4621
LOGIC
SWITCH
0
1
OFF
ON
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
MAX4622
V
L
V+
IN2
NO2
COM2
N.C.
COM4
NC4
SO/DIP
MAX4622
LOGIC
SWITCHES 1, 2
0
1
OFF
ON
SWITCHES 3, 4
ON
OFF
SWITCHES SHOWN FOR LOGIC "0" INPUT
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
MAX4623
V
L
V+
IN2
NO2
COM2
N.C.
COM4
NO4
SO/DIP
MAX4623
LOGIC
SWITCH
0
1
OFF
ON
19-1497; Rev 0; 8/99
PART
MAX4621
CSE
MAX4621CPE
0C to +70C
0C to +70C
TEMP. RANGE
PIN-PACKAGE
16 Narrow SO
16 Plastic DIP
Ordering Information continued at end of data sheet.
Pin Configurations/Functional Diagrams/Truth Tables
Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4621/MAX4622/MAX4623
Dual, 5
Analog Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--Dual Supplies
(V+ = +15V, V- = -15V, V
L
= +5V, GND = 0, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at T
A
= +25C.) (Note 2)
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.
(Voltages Referenced to GND)
V+ to GND ..............................................................-0.3V to +44V
V- to GND ...............................................................+0.3V to -44V
V+ to V-...................................................................-0.3V to +44V
V
L
to GND.....................................................-0.3V to (V+ + 0.3V)
All Other Pins to GND (Note 1) ........... (V- - 0.3V) to (V+ + 0.3V)
Continuous Current (COM_, NO_, NC_) ........................100mA
Peak Current (COM_, NO_, NC_)
(pulsed at 1ms, 10% duty cycle) ............................... 300mA
Continuous Power Dissipation (T
A
= +70C)
Narrow SO (derate 8.70mW/C above +70C) .............696mW
Narrow DIP (derate 10.53mW/C above +70C) ..........842mW
Operating Temperature Ranges
MAX462_C_ _ ......................................................0C to +70C
MAX462_E_ _....................................................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10sec) .............................+300C
CONDITIONS
3
5
V
V-
V+
V
COM_
,
V
NO_
,
V
NC_
Input Voltage Range
(Note 3)
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Note 1:
Signals on NO_, NC_, or COM_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maxi-
mum current rating.
T
A
= +25C
I
COM_
= 10mA,
V
NO_
or V
NC_
= 10V
7
R
ON
On-Resistance
T
A
= T
MIN
to T
MAX
0.25
0.5
T
A
= +25C
I
COM_
= 10mA,
V
NO_
or V
NC_
= 10V
0.7
R
ON
On-Resistance Match
Between Channels
(Notes 3, 4)
T
A
= T
MIN
to T
MAX
-0.5
0.01
0.5
T
A
= +25C
0.2
0.5
V
NO_
or V
NC_
= 10V,
V
COM_
=
+10V
nA
T
A
= +25C
I
COM_
= 10mA;
V
NO_
or V
NC_
= -5V,
0, 5V
0.7
R
FLAT(ON)
On-Resistance Flatness
(Notes 3, 5)
T
A
= T
MIN
to T
MAX
-5
5
I
NO_
, I
NC_
Off-Leakage Current
(NO_ or NC_) (Note 6)
T
A
= T
MIN
to T
MAX
-1
0.02
1
T
A
= +25C
-0.5
0.01
0.5
V
COM_
= 10V,
V
NO_
or V
NC_
=
+10V
or floating
nA
T
A
= +25C
V
COM_
= 10V,
V
NO_
or V
NC_
=
+10V
nA
-5
5
I
COM_(OFF)
COM_ Off-Leakage Current
(Note 6)
T
A
= T
MIN
to T
MAX
-10
10
I
COM_(ON)
COM_ On-Leakage Current
(Note 6)
T
A
= T
MIN
to T
MAX
V
INL
Logic Input Voltage Low
V
2.4
V
0.8
V
INH
Logic Input Voltage High
V
IN_
= 0.8V
-0.5
0.001
0.5
A
I
INL
Input Current with Input
Voltage Low
V
IN_
= 2.4V
-0.5
0.001
0.5
A
I
INH
Input Current with Input
Voltage High
ANALOG SWITCH
LOGIC INPUT
MAX4621/MAX4622/MAX4623
Dual, 5
Analog Switches
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--Dual Supplies (continued)
(V+ = +15V, V- = -15V, V
L
= +5V, GND = 0, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at T
A
= +25C.) (Note 2)
-0.5
0.001
0.5
T
A
= +25C
V
IN_
= 0 or 5V
A
V
COM_
= 10V, Figure 3, T
A
= +25C
V
COM_
= 10V,
Figure 2
V
COM_
= 10V,
Figure 2
T
A
= +25C
CONDITIONS
-5
5
I-
Negative Supply Current
T
A
= T
MIN
to T
MAX
-0.5
0.001
0.5
T
A
= +25C
V
IN_
= 0 or 5V
A
-5
5
I
L
Logic Supply Current
T
A
= T
MIN
to T
MAX
5
25
T
A
= +25C
90
200
ns
t
OFF
ns
t
D
Break-Before-Make Time
Delay (MAX4622 only)
Turn-Off Time
-0.5
0.001
0.5
V
4.5
20.0
Power-Supply Range
120
250
ns
t
ON
Turn-On Time
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
T
A
= +25C
V
IN_
= 0 or 5V
A
-5
5
I+
Positive Supply Current
T
A
= T
MIN
to T
MAX
-0.5
0.001
0.5
T
A
= +25C
V
IN_
= 0 or 5V
A
-5
5
I
GND
Ground Current
T
A
= T
MIN
to T
MAX
C
L
= 1.0nF, V
GEN
= 0, R
GEN
= 0, Figure 4,
T
A
= +25C
480
pC
Q
Charge Injection
R
L
= 50
, f = 1MHz, Figure 5, T
A
= +25C
V
ISO
Off-Isolation (Note 7)
dB
f = 1MHz, Figure 7, T
A
= +25C
f = 1MHz, Figure 8, T
A
= +25C
C
COM
On-Capacitance
pF
34
pF
-62
150
C
COM
COM_ Off-Capacitance
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
325
275
f = 1MHz, Figure 7, T
A
= +25C
C
OFF
NC_ or NO_ Capacitance
pF
34
R
L
= 50
, f = 1MHz, Figure 6, T
A
= +25C
V
CT
Crosstalk (Note 8)
dB
-60
POWER SUPPLY
SWITCH DYNAMIC CHARACTERISTICS
MAX4621/MAX4622/MAX4623
Dual, 5
Analog Switches
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--Single Supply
(V+ = +12V, V- = 0, V
L
= +5V, GND = 0, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
T
A
= +25C.) (Note 2)
-0.5
0.01
0.5
T
A
= +25C
0.9
1.3
0.2
0.5
V
COM_
= 1V, 10V;
V
NO_
or V
NC_
= 10V, 1V
nA
I
COM_
= 10mA; V
NO_
or V
NC_
= 3V, 6V, 9V;
T
A
= +25C
R
FLAT(ON)
V
IN_
= 2.4V
V
INL
Logic Input Voltage Low
V
CONDITIONS
On-Resistance Flatness
(Notes 3, 5)
-5
5
I
NO_(OFF)
,
I
NC_(OFF)
NO_ or NC_ Off-Leakage
Current (Notes 6, 9)
T
A
= T
MIN
to T
MAX
-1
0.02
1
T
A
= +25C
-0.5
0.01
0.5
V
COM_
= 10V, 1V;
V
NO_
or V
NC_
= 10V,
1V, or floating
nA
T
A
= +25C
V
COM_
= 10V, 1V;
V
NO_
or V
NC_
= 1V, 10V
nA
-5
5
I
COM_(OFF)
COM_ Off-Leakage Current
(Notes 6, 9)
T
A
= T
MIN
to T
MAX
-10
10
I
COM_(ON)
COM_ On-Leakage Current
(Notes 6, 9)
T
A
= T
MIN
to T
MAX
2.4
-0.5
0.001
0.5
A
I
INH
V
0.8
V
INH
Logic Input Voltage High
Input Current with Input
Voltage High
5.5
8
I
COM_
= 10mA, V
NO_
or V
NC_
= 10V,
T
A
= +25C
V
GND
V+
V
COM_
,
V
NO_
,
V
NC_
Input Voltage Range
(Note 3)
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
T
A
= +25C
I
COM_
= 10mA,
V
NO_
or V
NC_
= 10V
10
R
ON
On-Resistance
T
A
= T
MIN
to T
MAX
R
ON
On-Resistance Match
Between Channels
(Notes 3, 4)
V
IN_
= 0.8V
-0.5
0.001
0.5
A
I
INL
Input Current with Input
Voltage Low
Power-Supply Range
V
4.5
36.0
-0.5
0.001
0.5
V
IN_
= 0 or 5V
I+
Positive Supply Current
A
-5
5
T
A
= +25C
T
A
= T
MIN
to T
MAX
T
A
= +25C
T
A
= T
MIN
to T
MAX
-0.5
0.001
0.5
V
IN_
= 0 or 5V
I
L
Logic Supply Current
A
-5
5
T
A
= +25C
T
A
= T
MIN
to T
MAX
-0.5
0.001
0.5
V
IN_
= 0 or 5V
I
GND
Ground Current
A
-5
5
ANALOG SWITCH
LOGIC INPUT
POWER SUPPLY
MAX4621/MAX4622/MAX4623
Dual, 5
Analog Switches
_______________________________________________________________________________________
5
Note 2:
The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is used
in this data sheet.
Note 3:
Guaranteed by design.
Note 4:
R
ON
= R
ON_MAX
- R
ON_MIN
.
Note 5:
Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the
specified analog signal range.
Note 6:
Leakage currents are 100% tested at the maximum-rated hot temperature and guaranteed by correlation at +25C.
Note 7:
Off-isolation = 20log
10
[V
COM_ /
(V
NC_
or V
NO_
)]. V
COM_
= output, V
NC_
or V
NO_
= input to off switch.
Note 8:
Between any two switches.
Note 9:
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
ELECTRICAL CHARACTERISTICS--Single Supply (continued)
(V+ = +12V, V- = 0, V
L
= +5V, GND = 0, V
INH
= +2.4V, V
INL
= +0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
T
A
= +25C.) (Note 2)
T
A
= T
MIN
to T
MAX
R
L
= 100
, C
L
= 35pF, Figure 3, T
A
= +25C
V
COM_
= 10V, Figure 2
T
A
= T
MIN
to T
MAX
V
COM_
= 10V, Figure 2
T
A
= +25C
R
L
= 50
, f = 1MHz, Figure 6
V
CT
CONDITIONS
10
75
T
A
= +25C
100
200
ns
t
OFF
ns
Crosstalk (Note 8)
t
D
Break-Before-Make Time
Delay (MAX4622 only)
(Note 3)
Turn-Off Time (Note 3)
475
300
dB
-60
200
350
ns
t
ON
Turn-On Time (Note 3)
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
SWITCH DYNAMIC CHARACTERISTICS
C
L
= 1.0nF, V
GEN
= 0, R
GEN
= 0, Figure 4
45
pC
Q
Charge Injection
Off-Isolation (Note 7)
V
ISO
R
L
= 50
, f = 1MHz, Figure 5
-62
dB
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