ADG3249

Obsolete

2.5 V/3.3 V, 2:1 Multiplexer/Demultiplexer Bus Switch

Data Sheet (Rev. 0) Product Selection Table

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Overview

225 ps Propagation Delay through the Switch
4.5 Ω Switch Connection between Ports
Data Rate 1.244 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 610 MHz
8-Lead SOT-23 Package

The ADG3249 is a 2.5 V or 3.3 V, high performance 2:1 multiplexer/demultiplexer bus 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 input to be connected to the output without additional propagation delay or generating additional ground bounce noise. Each switch of the ADG3249 conducts equally well in both directions when on. The ADG3249 exhibits break-before-make switching action, preventing momentary shorting when switching channels.

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 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 pin () is included. When is low, V_CC is reduced internally, allowing for level translating between 3.3 V inputs and 1.8 V outputs.