Switches with Negative Rail Capability

_______________________________________________________________________________________

7

Pin Description (MAX4901/MAX4902 Dual-SPST Switches)

PIN

TDFN

UCSP

NAME

FUNCTION

1B1

2A1

COM1

Analog Switch 1, Common Terminal

—B2N.C.

No Connection. Leave N.C. unconnected.

3A2

NO1

Analog Switch 1, Normally Open Terminal. NO1 (MAX4902) has a shunt resistor to

GND when the switch is in open position.

4A3

IN1

Digital Control Input for Analog Switch 1. A logic high on IN1 connects COM1 to

NO1 and a logic low opens the switch.

5B3

GND

Ground

6C3

IN2

Digital Control Input for Analog Switch 2. A logic high on IN2 connects COM2 to

NO2 and a logic low opens the switch.

7C2

NO2

Analog Switch 2, Normally Open Terminal. NO2 has a shunt resistor to GND when

the switch is in open position (MAX4902).

8C1

COM2

Analog Switch 2, Common Terminal

EP

—

EP

Exposed Pad. Connect exposed pad to GND.

Pin Description (MAX4903/MAX4904/MAX4905 SPDT Switches)

PIN

TDFN

UCSP

NAME

FUNCTION

1A1

2A2

NO

Analog Switch, Normally Open Terminal. NO has a shunt resistor to GND when the

switch is in open position (MAX4904/MAX4905).

3A3

IN

Digital Control Input. Logic low on IN connects COM to NC and logic high connects

COM to NO.

N.C.

No Connection. Leave N.C. unconnected (MAX4903/MAX4904).

4B2

CMPO

Comparator Output (MAX4905)

5B3

GND

Ground

N.C.

No Connection. Leave N.C. unconnected (MAX4903/MAX4904).

6C3

CMP-

Comparator Input (MAX4905)

7C2

NC

Analog Switch, Normally Closed Terminal. NC has a shunt resistor to GND when the

switch is in open position (MAX4904/MAX4905).

8B1

COM

Analog Switch, Common Terminal

—C1N.C.

No Connection. Leave N.C. unconnected (MAX4903/MAX4904/MAX4905)

EP

—

EP

Exposed Pad. Connect exposed pad to GND.