REV. 0

ADG3233

–9–

DESCRIPTION

The ADG3233 is a bypass switch 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 higher voltages and

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

only flow from A to Y.

A1 and

EN Input

The A1 and enable (

EN) inputs have V

controlling device independent of the value of the supply being

used by the controlling device. These inputs (A1,

EN) are capable

while Device 0 could be operating from a 2.5 V or 3.3 V supply

rail, there are no internal diodes to the supply rails, so the device

can handle inputs above the supply but inside the absolute

maximum ratings.

Normal Operation

Figure 4 shows the bypass switch being used in normal mode.

In this mode, the signal paths are from A1 to Y1 and A2 to Y2.

logic level (this level translation can be either to a higher or

lower supply) and route the signal to the Y1 output, which will

then passed through Device 1 and back to the A2 input pin of

the bypass switch.

to the Y2 output pin of the bypass switch. Y2 output logic levels

SIGNAL INPUT

DEVICE 0

A1

A2

Y1

Y2

EN

BYPASS SWITCH

SIGNAL OUTPUT

DEVICE 1

DEVICE 2

LOGIC 1

Figure 4. Bypass Switch in Normal Mode