2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus Switch in SOT-66 ADG3241 FEATURES FUNCTIONAL BLOCK DIAGRAM 225 ps propagation delay through the switch A B 4.5 switch connection between ports Data rate 1.5 Gbps 2.5 V/3.3 V supply operation Selectable level shifting/translation BE Level translation Figure 1. 3.3 V to 2.5 V 3.3 V to 1.8 V 2.5 V to 1.8 V Small signal bandwidth 770 MHz Tiny 6-lead SC70 package and 6-lead SOT-66 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 switch applications GENERAL DESCRIPTION SEL SEL translating select pin ( ) is included. When is low, VCC is The ADG3241 is a 2.5 V or 3.3 V single digital switch. It is reduced internally, allowing for level translation between 3.3 V designed on a low voltage CMOS process that provides low inputs and 1.8 V outputs. This makes the device suited to power dissipation yet gives high switching speed and very low applications requiring level translation between different on resistance. This allows the input to be connected to the supplies, such as converter to DSP/microcontroller interfacing. output without additional propagation delay or generating additional ground bounce noise. PRODUCT HIGHLIGHTS BE The switch is enabled by means of the bus enable ( ) input 1. 3.3 V or 2.5 V supply operation. signal. This digital switch allows a bidirectional signal to be 2. Extremely low propagation delay through switch. switched when on. In the off condition, signal levels up to the 3. 4.5 switches connect inputs to outputs. supplies are blocked. 4. Level and voltage translation. This device is ideal for applications requiring level translation. 5. Tiny, SC70 package and SOT-66 package. 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 a 2.5 V supply and 2.5 V inputs are applied, the device translates the outputs to 1.8 V. In addition to this, a level Rev. B 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 04221-001ADG3241 TABLE OF CONTENTS Features .............................................................................................. 1 Timing Measurement Information .............................................. 11 Applications....................................................................................... 1 Bus Switch Applications ................................................................ 12 Functional Block Diagram .............................................................. 1 Mixed Voltage Operation, Level Translation.......................... 12 General Description ......................................................................... 1 3.3 V to 2.5 V Translation ......................................................... 12 Product Highlights ........................................................................... 1 2.5 V to 1.8 V Translation ......................................................... 12 Revision History ............................................................................... 2 3.3 V to 1.8 V Translation ......................................................... 12 Specifications..................................................................................... 3 Bus Isolation................................................................................ 13 Absolute Maximum Ratings............................................................ 4 Hot Plug and Hot Swap Isolation............................................. 13 ESD Caution.................................................................................. 4 Analog Switching ....................................................................... 13 Pin Configuration and Function Descriptions............................. 5 High Impedance During Power-Up/Power-Down................ 13 Typical Performance Characteristics ............................................. 6 Outline Dimensions....................................................................... 14 Terminology .................................................................................... 10 Ordering Guide .......................................................................... 14 REVISION HISTORY Changes to Absolute Maximum Ratings........................................3 5/06 Rev. A to Rev. B Changes to Pin Configurations .......................................................4 Updated Format..................................................................Universal Changes to Ordering Guide .............................................................4 Changes to Table 4............................................................................ 5 Updated Outline Dimensions....................................................... 11 Changes to Ordering Guide ......................................................... 14 7/03Revision 0: Initial Version 10/04 Rev. 0 to Rev. A. Changes to Features.......................................................................... 1 Changes to Specifications................................................................ 2 Rev. B Page 2 of 16