ADG3231

–6–

TEST CIRCUIT

INPUT

0V

t

PLH

t

PHL

OUTPUT

Figure 1. Propagation Delay

DESCRIPTION

The ADG3231 is a level translating device designed on a submicron

process that operates from supplies as low as 1.65 V. The device is

guaranteed for operation over the supply range 1.65 V to 3.6 V.

It operates from two supply voltages, allowing bidirectional level

translation, i.e., it translates low voltages to high voltages and vice

versa. The signal path is unidirectional, meaning data may only

flow from A to Z.

A1 Input

be 1.8 V while the preceding device could be supplied from a 2.5 V or

3.3 V supply rail. There are no internal diodes to the supply rails,

so the ADG3231 can handle inputs above the supply but inside

the absolute maximum ratings stated.

Normal Operation

The signal path is from A1 to Y1. The device will level translate

can be to either a higher or a lower supply) and route the signal

The supplies in Figure 2 may be any combination of supplies,

3.6 V.

SIGNAL OUTPUT

VCC2

DEVICE 2

SIGNAL INPUT

DEVICE 1

ADG3231

A1

GND

Y1

Figure 2. Typical Operation of the ADG3231 Level Translating Switch

REV. 0