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The DG309AK is a four-channel differential multiplexer manufactured by Rochester Electronics, LLC. It features a ceramic dual in-line package (CDIP) with sixteen pins and glass-sealed construction. The device operates on a nominal negative supply voltage of -15 V and supports an operating temperature range from -55 °C to 125 °C. Electrical specifications include a maximum on-resistance (Ron) of 100 Ω and an on-resistance matching specification of 15 Ω. The component is classified as a differential multiplexer within the analog mixed-signal IC category.
Verify the specific manufacturer lot and date code upon receipt, as Rochester Electronics sources components from various original manufacturers. Confirm that the ceramic DIP-16 package matches the design footprint requirements. Ensure the operating temperature range aligns with the system's thermal constraints given the wide -55 °C to 125 °C specification.
Select this component when high-temperature stability and ruggedness are required over surface-mount options. The CDIP-16 package necessitates through-hole mounting. Verify that the -15 V nominal supply requirement fits the available power rails. Consider the 100 Ω maximum on-resistance impact on signal integrity for low-voltage applications.
This part belongs to the DG309 family of analog switches and multiplexers. Rochester Electronics provides lifecycle support for discontinued or hard-to-find components. The DG309AK specifically denotes the ceramic package variant, distinguishing it from plastic or surface-mount versions like the DG309DY.
Cross-reference with other DG309 variants such as DG309AC or DG309AY if package compatibility allows. Verify pinout compatibility before substituting with similar differential multiplexers from other manufacturers.