2.5 V/3.3 V, 1-Bit, 2-Port

Level Translator Bus Switch in SOT-66

ADG3241

Rev. B

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FUNCTIONAL BLOCK DIAGRAM

FEATURES

225 ps propagation delay through the switch

BE

A

B

4.5 Ω switch connection between ports

Data rate 1.5 Gbps

2.5 V/3.3 V supply operation

Selectable level shifting/translation

Level translation

Figure 1.

3.3 V to 2.5 V

3.3 V to 1.8 V

2.5 V to 1.8 V

Small signal bandwidth 770 MHz

Tiny 6-lead SC70 package and 6-lead SOT-66 package

APPLICATIONS

3.3 V to 1.8 V voltage translation

3.3 V to 2.5 V voltage translation

2.5 V to 1.8 V voltage translation

Bus switching

Bus isolation

Hot swap

Hot plug

Analog switch applications

GENERAL DESCRIPTION

The ADG3241 is a 2.5 V or 3.3 V single digital switch. It is

designed on a low voltage CMOS process that provides low

power dissipation yet gives high switching speed and very low

on resistance. This allows the input to be connected to the

output without additional propagation delay or generating

additional ground bounce noise.

The switch is enabled by means of the 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 translates the outputs to 1.8 V. In addition to this, a level

translating select pin (SEL

SEL

) is included. When

reduced internally, allowing for level translation between 3.3 V

inputs and 1.8 V outputs. This makes the device suited to

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 and voltage translation.

5.

Tiny, SC70 package and SOT-66 package.