ADG798HRUZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG798HRUZ is a low voltage, CMOS analog multiplexer designed for extreme high-temperature operation up to +175°C. It features a single 8:1 configuration with TTL/CMOS-compatible inputs and break-before-make switching action. The device operates on a 3.0 V to 5.5 V single supply or ±2.5 V dual supply. Key electrical parameters include a maximum on resistance of 9 Ω, a channel-to-channel matching of 600 mΩ, and a maximum flatness of 2 Ω. Dynamic characteristics specify a transition time of 28 ns, an on time of 17 ns, and an off time of 13 ns at 5 V. The package is a 16-lead TSSOP.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Extreme high temperature operation specified from -55°C to +175°C
• Low power consumption with very low on resistance
• Guaranteed break-before-make switching action prevents momentary shorting

Analog Switches, Multiplexers, Demultiplexers Applications

• Downhole drilling and instrumentation
• Avionics systems
• Heavy industrial applications
• High temperature environments

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix HRUZ corresponds to the 16-lead TSSOP package variant when sourcing components. Confirm that the operating temperature range requirement aligns with the +175°C limit for this package type, as opposed to the FLATPACK variant which supports higher temperatures. Ensure compatibility with standard surface mount assembly processes for the TSSOP footprint.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG798HRUZ when a compact surface mount solution is required for high-temperature environments up to +175°C. This TSSOP variant offers lower thermal resistance compared to some ceramic packages but has a lower maximum temperature rating than the FLATPACK version. Verify that the 9 Ω maximum on resistance meets the signal integrity requirements for the specific application load.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG798 series includes variants in both FLATPACK and TSSOP packages. The HRUZ suffix specifically denotes the 16-lead Thin Shrink Small Outline Package (TSSOP). While the FLATPACK versions support operation up to +210°C, the TSSOP variant is rated for +175°C. All variants share the same core CMOS multiplexer functionality and electrical specifications within their respective temperature ranges.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements must maintain the 8:1 multiplexer topology and high-temperature qualification. Consider other Analog Devices high-temperature muxes if the +175°C limit is insufficient, though no direct pin-for-pin substitutes are explicitly listed in the provided documentation.