High Temperature, Low Voltage 8-Channel Multiplexer Data Sheet ADG798 FEATURES Extreme high temperature operation FUNCTIONAL BLOCK DIAGRAM Specified temperature range ADG798 55C to +210C (16-lead FLATPACK) 55C to +175C (16-lead TSSOP) S1 3.0 V to 5.5 V single supply 2.5 V dual supply D 10 on resistance, maximum 2 on-resistance flatness, maximum 12 ns switching times S8 Single 8:1 multiplexer Low power consumption 1 OF 8 DECODER TTL-/CMOS-compatible inputs APPLICATIONS A0 A1 A2 EN Downhole drilling and instrumentation Figure 1. Avionics Heavy industrial High temperature environments GENERAL DESCRIPTION packages have an operating temperature range of 55C to +210C. The ADG798 is a low voltage, CMOS, analog multiplexer A 16-lead TSSOP package is also available that has an operating designed to operate at very high temperatures up to 210C. The temperature range of 55C to +175C. All packages are designed ADG798 switches one of eight inputs (S1 to S8) to a common for robustness at extreme temperatures, and are qualified for output, D, as determined by the 3-bit binary address lines A0, 1000 hours of continuous operation at the maximum temperature A1, and A2. An EN input on the device enables or disables the rating. device. When the device is disabled, all channels are switched off. The ADG798 is a member of a growing series of high temperature The ADG798 features low power consumption and a 3.3 V to qualified products offered by Analog Devices, Inc. For a complete 5.5 V operating supply range. All channels exhibit break-before- selection table of available high temperature products, see the make switching action, preventing momentary shorting when high temperature product list and qualification data available at switching channels. These switches are designed with an enhanced ADG798 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Pin Configuration and Function Descriptions ........................... 10 Applications ....................................................................................... 1 Truth Table .................................................................................. 10 Functional Block Diagram .............................................................. 1 Typical Performance Characteristics ........................................... 11 General Description ......................................................................... 1 Test Circuits ..................................................................................... 15 Product Highlights ........................................................................... 1 Terminology .................................................................................... 18 Revision History ............................................................................... 2 Theory of Operation ...................................................................... 19 Specif icat ions ..................................................................................... 3 Applications Information .............................................................. 20 Dual Supply ................................................................................... 7 Power Supply Sequencing ......................................................... 20 Continuous Current per Channel, Sx or D ............................... 8 Outline Dimensions ....................................................................... 21 Absolute Maximum Ratings ............................................................ 9 Ordering Guide .......................................................................... 22 Thermal Resistance ...................................................................... 9 ESD Caution .................................................................................. 9 REVISION HISTORY 6/2018Rev. 0 to Rev. A Added TSSOP Package ...................................................... Universal Changes to Features .......................................................................... 1 Changes to General Description .................................................... 1 Changes to Specifications, Table 1.................................................. 3 Changes to Specifications, Table 2.................................................. 5 Changes to Specifications, Table 3.................................................. 7 Changes to Specifications, Table 4.................................................. 8 Added TSSOP Operating Temperature Range and Junction Temperature Range, Table 5 ............................................................ 9 Added RU-16 Thermal Characteristics, Table 6 ........................... 9 Changes to Figure 2 Caption ......................................................... 10 9/2016Revision 0: Initial Version Rev. A Page 2 of 22