REV. 0

ADG3242

2.5 V/3.3 V, 2-Bit, Common Control

Level Translator Bus Switch

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FEATURES

225 ps Propagation Delay through the Switch

4.5

Switch Connection between Ports

Data Rate 1.5 Gbps

2.5 V/3.3 V Supply Operation

Selectable Level Shifting/Translation

Level Translation

3.3 V to 2.5 V

3.3 V to 1.8 V

2.5 V to 1.8 V

Small Signal Bandwidth 710 MHz

8-Lead SOT-23 Package

APPLICATIONS

3.3 V to 2.5 V Voltage Translation

3.3 V to 1.8 V Voltage Translation

2.5 V to 1.8 V Voltage Translation

Bus Switching

Bus Isolation

Hot Swap

Hot Plug

Analog Switch Applications

FUNCTIONAL BLOCK DIAGRAM

A1

B1

BE

A0

B0

GENERAL DESCRIPTION

The ADG3242 is a 2.5 V or 3.3 V, 2-bit, 2-port common-

control digital switch. It is designed on a low voltage CMOS

process, which provides low power dissipation yet gives high

switching speed and very low on resistance. This allows the inputs

to be connected to the outputs without additional propagation

delay or generating additional ground bounce noise.

These switches are enabled by means of a common bus enable

(

BE) input signal. This digital switch allows a bidirectional

signal to be switched when ON. In the OFF condition, signal

levels up to the supplies are blocked.

This device is ideal for applications requiring level translation.

When operated from a 3.3 V supply, level translation from 3.3 V

inputs to 2.5 V outputs is allowed. Similarly, if the device is

operated from a 2.5 V supply and 2.5 V inputs are applied, the

device will translate the outputs to 1.8 V. In addition, a level

translating select pin (

SEL) is included. When SEL is low, V

CC

is reduced internally, allowing for level translation between 3.3

V inputs and 1.8 V outputs. This makes the device suitable for

applications requiring level translation between different supplies,

such as converter to DSP/microcontroller interfacing.

PRODUCT HIGHLIGHTS

1. 3.3 V or 2.5 V supply operation.

2. Extremely low propagation delay through switch.

3. 4.5

Ω switches connect inputs to outputs.

4. Level/voltage translation.

5. Tiny SOT-23 package.