Low-Voltage 3.5

Ω

CMOS Analog Switches

6

_______________________________________________________________________________________

50%

0V

IN

V+

0V

V+

MAX4729

MAX4730

GND

NO/NC

V+

OPEN

NC/NO

COM

IN

V+

MAX4729

MAX4730

GND

NO

V+

NC

COM

IN

50%

90%

90%

50%

0V

V+

IN

50%

90%

0V

90%

Figure 1. Switching Times

Detailed Description

The MAX4729/MAX4730 single-pole/double-throw

(SPDT) switches operate from a single supply ranging

from +1.8V to +5.5V. These switches provide low 3.5

Ω

a 2.7V supply. These devices typically consume only

1nA of supply current, making them suitable for use in

low-power, portable applications. The MAX4729/

MAX4730 feature low-leakage currents over the entire

temperature range, TTL/CMOS-compatible digital logic,

and excellent AC characteristics.

Applications Information

Digital Control Inputs

The MAX4729/MAX4730 logic inputs accept up to +5.5V,

regardless of supply voltage. For example, with a +3.3V

supply, IN can be driven low to GND and high to +5.5V,

allowing for mixing of logic levels in a system. With a 2.7V

to 3.6V power-supply voltage range, the logic thresholds

Power-Supply Sequencing

and Overvoltage Protection

Caution: Do not exceed the absolute maximum ratings

because stresses beyond the listed ratings can cause

permanent damage to the device. Proper power-supply

sequencing is recommended for all CMOS devices.

Always apply V+ before applying analog signals, espe-

cially if the analog signal is not current limited.