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ADG3247BCP-REEL7 Datasheet(PDF) 1 Page - Analog Devices |
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ADG3247BCP-REEL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 12 page REV. 0 ADG3247 2.5 V/3.3 V, 16-Bit, 2-Port Level Translating, Bus Switch Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. 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 40-Lead 6 mm 6 mm LFCSP and 38-Lead TSSOP 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 Plug Hot Swap Analog Switching Applications FUNCTIONAL BLOCK DIAGRAM A7 B7 BE1 A0 B0 A15 B15 BE2 A8 B8 GENERAL DESCRIPTION The ADG3247 is a 2.5 V or 3.3 V 16-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 ADG3247 is organized as dual 8-bit bus switches with separate bus enable ( BEx) inputs. This allows the device to be used as two 8-bit digital switches or one 16-bit bus switch. These bus 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 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, the ADG3247 has a level translating select pin ( SEL). When SEL is low, V CC is 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. 40-lead 6 mm 6 mm LFCSP and 38-lead TSSOP packages |
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