MAX4543 Maxim, MAX4543 Datasheet - Page 6

• Manufacturer Part Number: MAX4543
• Description: The MAX4541–MAX4544 are precision, dual analog switches designed to operate from a single +2
• Manufacturer: Maxim

Low-Voltage, Single-Supply
Dual SPST/SPDT Analog Switches
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
6
DIP/SO/
µMAX/
TDFN
EP
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1
2
3
4
5
6
7
8
MAX4541
SOT23-8
V g
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1
8
3
6
5
4
7
2
Applications Information
DIP/SO/
µMAX/
TDFN
NO
EP
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2
3
4
6
7
8
1
5
POSITIVE SUPPLY
MAX4542
GND
V+
SOT23-8
D1
D2
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8
3
6
4
7
2
1
5
COM
PIN
DIP/SO/
µMAX/
TDFN
EP
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1
2
3
4
6
7
8
5
MAX4543
SOT23-8
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1
8
3
6
4
7
2
5
DIP/SO/
µMAX/
TDFN
5, 6
EP
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4
8
1
2
3
7
The MAX4541–MAX4544 are TTL compatible when
powered from a single +5V supply. When powered
from other supply voltages, TTL compatibility is guar-
anteed and the logic inputs can be driven rail-to-rail.
For example, with a +12V supply, IN1 and IN2 can be
driven low to 0 and high to 12V. With a +3.3V supply,
IN1 and IN2 should be driven low to 0 and high to
3.3V.
Driving IN1 and IN2 rail-to-rail minimizes power con-
sumption.
Analog signals that range over the entire supply voltage
(V+ to GND) can be switched with very little change in
on-resistance over the entire voltage range (see the
Typical Operating Characteristics). All the switches are
bidirectional, so the NO_, NC_, and COM_ pins can be
used as either inputs or outputs.
MAX4544
SOT23-6
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3
2
6
5
4
1
NAME
NAME
COM1
COM2
COM
GND
NO2
NC1
NC2
N.C.
NO1
IN2
IN1
NO
NC
V+
EP
IN
Analog Switch 1—Normally Open
Analog Switch 1—Common
Digital Control Input 2
Ground—Negative Supply Input
Analog Switch 2—Normally Open
Analog Switch 2—Common
Digital Control Input 1
Positive Supply Voltage Input
Analog Switch 1—Normally Closed
Analog Switch 2—Normally Closed
Analog Switch—Normally Open
Analog Switch—Common
Analog Switch—Normally Closed
Not Connected (Open Circuit)
Digital Control Input
Exposed Pad. Connect EP to V+.
Analog Signal Levels
Pin Description
FUNCTION
Logic Levels