REV. 0

ADG3246

2.5 V/3.3 V, 10-Bit, 2-Port

Level Translating, Bus Switch

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FEATURES

225 ps Propagation Delay through the Switch

4.5

Switch Connection between Ports

Data Rate 1.244 Gbps

2.5 V/3.3 V Supply Operation

Selectable Level Shifting/Translation

Small Signal Bandwidth 610 MHz

Level Translation

3.3 V to 2.5 V

3.3 V to 1.8 V

2.5 V to 1.8 V

24-Lead TSSOP and LFCSP Packages

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 Signal Switching

FUNCTIONAL BLOCK DIAGRAM

A9

B9

A0

B0

BE

GENERAL DESCRIPTION

The ADG3246 is a 2.5 V or 3.3 V, 10-bit, 2-port digital switch.

It is designed on Analog Devices’ low voltage CMOS process,

which provides low power dissipation yet gives high switching

speed and very low on resistance, allowing inputs to be connected

to outputs without additional propagation delay or generating

additional ground bounce noise.

The switches are enabled by means of the bus enable (

BE)

input signal. These digital switches allow bidirectional signals 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 occurs. Similarly, if the device is oper-

ated 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 to this, the ADG3246

has a level translating select pin (

SEL). When SEL is low, V

reduced internally, allowing for level translation between 3.3 V

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

cations 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

W switches connect inputs to outputs

4. Level/voltage translation

5. 24-lead 4 mm

¥ 4 mm LFCSP and 24-lead TSSOP packages