HT507

Analog Switches - Special Purpose Overview

The Honeywell HT507 is a high-temperature analog multiplexer featuring an 8-channel differential configuration. Fabricated using dielectrically isolated latch-up-free HTMOS™ linear process, it operates over a -55 to +225°C range and withstands up to 300°C for one year with derated performance. It includes a 4-bit decoder, logic threshold reference, and enable pin. The device supports split or single supply voltages (±5V or 0 to 10V), offering 400Ω on-resistance at 225°C and less than 2.5µA output leakage. It utilizes a standard 28-pin DIP ceramic package.

Analog Switches - Special Purpose Feature Summary

• Dielectrically isolated latch-up-free construction ensures reliability in extreme thermal environments.
• Supports continuous operation at 225°C for at least five years.
• Features break-before-make switching action compatible with TTL and 5V CMOS logic levels.

Analog Switches - Special Purpose Applications

• Down-hole oil, gas, and geothermal well monitoring
• Avionics systems
• Turbine engine control
• Industrial process control
• Electric power conversion

Analog Switches - Special Purpose Procurement Notes

Verify the specific screening level suffix 'C' corresponds to commercial grade requirements. Confirm that the 28-lead ceramic DIP package meets mechanical constraints. Ensure the design accommodates the specified worst-case electrical parameters across the full operating temperature range. Contact Honeywell directly for current availability and manufacturing status updates.

Analog Switches - Special Purpose Selection Notes

Select the HT507 when differential signal routing is required in high-temperature applications. Verify that the 8-channel capacity suffices for the system architecture. Ensure the digital interface aligns with available TTL or 5V CMOS logic families. Consider the 28-pin DIP footprint for PCB layout compatibility.

Analog Switches - Special Purpose Part Context

The HT507 belongs to the HT506/HT507 family of high-temperature monolithic multiplexers. While the HT506 provides 16 single-ended channels, the HT507 offers 8 differential channels. Both share identical fabrication processes, packaging, and thermal specifications, differing primarily in channel count and signal type.

Analog Switches - Special Purpose Replacement Considerations

No public confirmed substitute part numbers are documented. The HT506 serves as the single-ended variant within the same product family but does not provide differential functionality.

Analog Switches - Special Purpose FAQ

What is the maximum storage temperature for the HT507?

The absolute maximum storage temperature rating is -65 to +325°C.

How does the HT507 handle logic input thresholds?

It features internal references ensuring a minimum of 2.4V for logic high and a maximum of 0.8V for logic low, allowing direct interface with TTL and 5V CMOS.

What is the expected lifespan at 225°C?

The device is designed to continuously operate for at least five years at 225°C.