19-1136; Rev 6; 7/07
Quad, Low-Voltage, SPST Analog Switches
General Description
Features
The MAX4521/MAX4522/MAX4523 are quad, low-volt-
age, single-pole/single-throw (SPST) analog switches.
On-resistance (100Ω max) is matched between switch-
es to 4Ω max, and is flat (12Ω max) over the specified
signal range. Each switch can handle rail-to-rail analog
signals. The off-leakage current is only 1nA at +25°C
and 10nA at +85°C.
♦ +2V to +12V Single Supply
±2V to ±ꢀV ꢁuDl Supplieꢂ
♦ 100Ω SignDl PDthꢂ with ±±V Supplieꢂ
♦ Low Power Conꢂumption, <1µW
♦ 4 SepDrDtely Controlled SPST Switcheꢂ
♦ RDil-to-RDil SignDl HDndling
The MAX4521 has four normally closed (NC) switches,
and the MAX4522 has four normally open (NO) switch-
es. The MAX4523 has two NC switches and two NO
switches.
♦ Pin CompDtible with Induꢂtry-StDndDrd
ꢁG211/ꢁG212/ꢁG213
These CMOS switches can operate with dual power
supplies ranging from 2ꢀ to ꢁꢀ or a single supply
between +2ꢀ and +12ꢀ. They are fully specified for sin-
gle +2.7ꢀ operation.
♦ >2kV ESꢁ Protection per Method 301±.7
♦ TTL/CMOS-CompDtible Inputꢂ with ±±V or
Single +±V Supply
Ordering Information
All digital inputs have +0.8ꢀ and +2.4ꢀ logic thresh-
olds, ensuring TTL/CMOS-logic compatibility when
using 5ꢀ or a single +5ꢀ supply.
PIN-
PACKAGE
PKG
COꢁE
PART
TEMP RANGE
Applications
MAX4±21CPE
MAX4521CSE
MAX4521CEE
MAX4521CUE
MAX4521CGE
MAX4521C/D
0°C to +70°C 1ꢁ Plastic DIP
0°C to +70°C 1ꢁ Narrow SO
0°C to +70°C 1ꢁ QSOP
P1ꢁ-1
S1ꢁ-2
E1ꢁ-4
U1ꢁ-2
G1ꢁ44-1
—
Battery-Operated Equipment
Data Acquisition
Test Equipment
Avionics
0°C to +70°C 1ꢁ TSSOP
0°C to +70°C 1ꢁ QFN-EP**
0°C to +70°C
Dice*
Audio Signal Routing
Networking
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**EP = Exposed pad.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
IN1
16
15
14
IN1
16 IN2
15 COM2
14 NO2
13 V+
IN1
16 IN2
15 COM2
14 NC2
13 V+
IN2
COM1
NC1
V-
COM2
NC2
COM1
NO1
V-
COM1
NO1
V-
13 V+
MAX4522
MAX4523
MAX4521
N.C.
GND
NC4
12
11
10
9
12
12
11
10
9
GND
NO4
GND
NO4
N.C.
N.C.
NC3
COM3
IN3
NC3
COM3
IN3
11
10
9
NO3
COM3
IN3
COM4
IN4
COM4
IN4
COM4
IN4
ꢁIP/SO/QSOP/TSSOP
ꢁIP/SO/QSOP/TSSOP
ꢁIP/SO/QSOP/TSSOP
MAX4521
MAX4522
MAX4523
SWITCHES
1, 4
SWITCHES
LOGIC
SWITCH
LOGIC
SWITCH
LOGIC
2, 3
0
1
ON
0
1
OFF
ON
0
1
OFF
ON
ON
OFF
OFF
SWITCHES SHOWN FOR LOGIC "0" INPUT
N.C. = NOT CONNECTED
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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or visit Maxim’s website at www.maxim-ic.com.