±15kV ESD-Protected, Low-Voltage, Quad,

SPST, CMOS Analog Switches

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Detailed Description

The MAX4620/MAX4630/MAX4640 are quad SPST

CMOS analog switches with circuitry providing ±15kV

ESD protection on the NO and NC pins. The CMOS

switch construction provides rail-to-rail signal handling

while consuming virtually no power. Each of the four

switches is independently controlled by a TTL/CMOS-

level-compatible digital input.

Applications Information

Do not exceed the absolute maximum ratings because

stresses beyond the listed ratings may cause perma-

nent damage to the device.

Proper power-supply sequencing is recommended for

all CMOS devices. Always sequence V+ on first, fol-

lowed by the logic inputs, NO/NC, or COM.

Operating Considerations for

High-Voltage Supply

The MAX4620/MAX4630/MAX4640 are capable of

+12V single-supply operation with some precautions.

The absolute maximum rating for V+ is 13V (referenced

to GND). When operating near this region, bypass V+

with a minimum 0.1µF capacitor to ground as close to

the IC as possible.

Q = (

OFF

ON

OFF

IN

MAX4620

MAX4630

MAX4640

GND

V+

COM_

V+

IN

NO_/NC_

Figure 4. Charge Injection

Figure 5. Crosstalk

SIGNAL

GENERATOR 0dBm

V+

10nF

ANALYZER

NO2

GND

COM1

0 OR 2.4V

IN1

NO1

50

Ω

COM2

IN2

0 OR

2.4V

NC

V+

MAX4620

MAX4630

MAX4640