19-1497; Rev 0; 8/99
Dual, 5Ω Analog Switches
1/MAX4623
General Description
Features
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 5Ω on-resistance guaranteed to
match to within 0.5Ω between channels and to remain
flat over the full analog signal range (∆0.5Ω max). They
also offer low leakage (<500pA at +25°C, <5nA at
+85°C) and fast switching times (turn-on time <250ns,
turn-off time <200ns).
♦ Low On-Resistance: 3Ω (typ), 5Ω (max)
♦ Guaranteed R
(0.5Ω max)
Match Between Channels
ON
♦ Guaranteed Break-Before-Make Operation
(MAX4622)
♦ Guaranteed Off-Channel Leakage <5nA at +85°C
♦ Single-Supply Operation (+4.5V to +36V)
Bipolar-Supply Operation (±4.5V to ±18V)
♦ TTL/CMOS-Logic Compatible
®
♦ Rail-to-Rail Analog Signal Handling Capability
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.
♦ Pin Compatible with DG401/DG403/DG405
Applications
Reed Relay Replacement
Test Equipment
Military Radios
PBX, PABX Systems
Audio-Signal Routing
Avionics
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.
Communication Systems
Data-Acquisition Systems
Ordering Information
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 Narrow SO
16 Plastic DIP
MAX4621CSE
MAX4621CPE
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Ordering Information continued at end of data sheet.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
COM1
N.C.
COM1
N.C.
COM1
NO1
IN1
V-
NO1
IN1
V-
NO1
IN1
V-
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
16
15
14
13
12
11
10
9
16
15
14
13
12
11
10
9
N.C.
N.C.
N.C.
COM3
NC3
COM3
NO3
GND
GND
GND
NC4
COM4
N.C.
NO4
COM4
N.C.
V
L
V
L
N.C.
N.C.
V
L
MAX4621
MAX4622
MAX4623
V+
V+
V+
IN2
NO2
IN2
NO2
N.C.
IN2
NO2
COM2
COM2
COM2
SO/DIP
SO/DIP
SO/DIP
MAX4622
SWITCHES 1, 2 SWITCHES 3, 4
MAX4621
MAX4623
LOGIC SWITCH
LOGIC
LOGIC
SWITCH
ON
OFF
0
1
OFF
ON
0
1
OFF
ON
0
1
OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
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