2.5 V/3.3 V, 2-Bit Common Control Level Translator Bus Switch ADG3242 FEATURES FUNCTIONAL BLOCK DIAGRAM 225 ps propagation delay through the switch A0 B0 4.5 switch connection between ports Data rate 1.5 Gbps 2.5 V/3.3 V supply operation A1 B1 Selectable level shifting/translation Level translation BE 3.3 V to 2.5 V Figure 1. 3.3 V to 1.8 V 2.5 V to 1.8 V Small signal bandwidth 710 MHz 8-lead SOT-23 package APPLICATIONS 3.3 V to 2.5 V voltage translation 3.3 V to 1.8 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 internally, allowing for level translation between 3.3 V inputs The ADG3242 is a 2.5 V or 3.3 V, 2-bit, 2-port, common control and 1.8 V outputs. This makes the device suitable for applications digital switch. It is designed on a low voltage CMOS process, and requiring level translation between different supplies, such as provides low power dissipation, yet gives high switching speed converter to DSP/microcontroller interfacing. and very low on resistance. This allows the inputs to be connected to the outputs without additional propagation delay or generating PRODUCT HIGHLIGHTS additional ground bounce noise. 1. 3.3 V or 2.5 V supply operation. These switches are enabled by means of a common bus enable 2. Extremely low propagation delay through switch. BE ( ) input signal. This digital switch allows a bidirectional signal to be switched when on. In the off condition, signal levels up 3. 4.5 switches connect inputs to outputs. to the supplies are blocked. 4. Level/voltage translation. This device is ideal for applications requiring level translation. 5. Tiny SOT-23 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 oper- ated from a 2.5 V supply and 2.5 V inputs are applied, the device translates the outputs to 1.8 V. In addition, a level translating SEL SEL select pin ( ) is included. When is low, VCC is reduced Rev. A 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. 04309-001ADG3242 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 Configurations 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 9/06Rev. 0 to Rev. A Updated Format..................................................................Universal Added Table 4.................................................................................... 5 Changes to the Ordering Guide.................................................... 14 8/03Revision 0: Initial Version Rev. A Page 2 of 16