100395QCX

Overview

The Fairchild Semiconductor 100395QCX is a mixed-signal translator designed for unidirectional signal conversion. It functions as an ECL-to-TTL translator, supporting nine channels within a single circuit configuration. The device is housed in a 28-PLCC package with dimensions of 11.5x11.5 mm. It operates within a temperature range up to 85 °C and features 3-state outputs. The component is classified under Logic Translators and Level Shifters.

Feature Summary

• Unidirectional translation from ECL input standards to TTL output levels
• Integration of nine independent channels within a single integrated circuit
• Implementation of 3-state output capability for bus driving applications

Applications

• Interface circuits between ECL logic families and TTL logic families
• System level shifting in mixed-voltage digital environments
• Signal translation in high-speed data processing interfaces

Procurement Notes

Verify the manufacturer designation carefully, as some listings incorrectly attribute this part to Texas Instruments despite Fairchild Semiconductor being the primary source. Confirm the package type is 28-PLCC and check for RoHS compliance status. Note that the part status is listed as obsolete in several distributor databases; ensure availability matches project requirements before procurement.

Selection Notes

Select this component when converting ECL signals to TTL levels is required without bidirectional functionality. The nine-channel capacity reduces board space compared to using multiple single-channel translators. Ensure the system voltage levels match the specific ECL and TTL standards supported by the device. Verify thermal performance meets the 85 °C maximum operating temperature constraint.

Part Context

This device belongs to the F100K 300 Series ECL Logic family. It serves as a bridge between different logic families, specifically addressing the voltage level mismatch between ECL and TTL. The 28-PLCC package provides a compact solution for multi-channel translation needs in legacy or specialized industrial systems.

Replacement Considerations

The 100390QC is a related PECL-to-TTL translator with six functional units in the same LCC-28 package. While functionally similar, channel count and input standard differences require careful evaluation. No other direct substitute part numbers are publicly confirmed for this specific model.