The ADG3247 is a 2.5 V or 3.3 V 16 Bit (Dual 8 Bit), 2 port digital switch. It is designed on our 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 the outputs without additional propagation delay or generating additional ground bounce noise.
The switches are enabled by means of the Bus Enable, () input signal. These digital switches allow bi-directional 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 3.3V inputs to 2.5V 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 to this, a level translating select pin () is included. When is low, VCC is reduced internally allowing for level translation between 3.3V inputs and 1.8V outputs. This makes the device suited to applications requiring level translation between different supplies, such as converter to DSP interfacing.
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|ADG3247: 2.5 V/3.3 V, 16 Bit, 2 Port Level Translator, Bus Switch Data Sheet (Rev 0, 05/2003) (pdf, 380 kB)||Data Sheets|
Data-acquisition system uses fault protection
By Catherine Redmond, Analog Devices, Inc. (EDN, 4/15/2004)
CMOS Switches Offer High Performance in Low Power, Wideband Applications
(pdf, 320 kB)
by Theresa Corrigan and Ray Goggin, Analog Devices, Inc. (High Frequency Electronics, February 2004)
Enhanced Multiplexing for MEMS Optical Cross Connects
by James Caffrey (Fiberoptic Product News, 8/2003)
Bus Switches for Speed, Safety, and Efficiency: What They Are and What You Should Know About Them.
Bus switches are characterized by sub-nanosecond propagation delay and fast switching, and are designed for connecting to high-speed digital buses. They are ideally suited for voltage translation, hot swapping, hot plug, bus- or capacitance isolation, and many other applications. The key features that make them suitable for so many different applications include low on-resistance, low capacitance, and low propagation delay.
|Switches and Multiplexers Product Selection Guide (pdf, 1462 kB)||Product Selection Guide|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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