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 switchingspeed and very low on resistance, allowing inputs to be connectedto outputs without additional propagation delay or generatingadditional ground bounce noise.

The switches are enabled by means of the bus enable (BE)input signal. These digital switches allow bidirectional signals tobe switched when ON. In the OFF condition, signal levels up tothe 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 Vinputs to 2.5 V outputs occurs. Similarly, if the device is operatedfrom a 2.5 V supply and 2.5 V inputs are applied, the devicewill translate the outputs to 1.8 V. In addition to this, the ADG3246has a level translating select pin (SEL). When SEL is low, VCC isreduced internally, allowing for level translation between 3.3 Vinputs and 1.8 V outputs. This makes the device suited to applicationsrequiring 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. 24-lead 4 mm ¥ 4 mm LFCSP 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 signal switching

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.