MC100EP195BFAR2G

Overview

The MC100EP195BFAR2G is a 3.3 V ECL Programmable Delay Chip (PDC) designed for clock deskewing and timing adjustment. It provides variable delay of differential NECL/PECL input transitions with a digitally selectable resolution of approximately 10 ps and a net range up to 10.2 ns. The device features a maximum input clock frequency exceeding 1.2 GHz, operates within a PECL voltage range of 3.0 V to 3.6 V, and supports LVPECL, LVNECL, and LVDS input levels. It includes internal temperature compensation and an EN pin that forces the output low when asserted high.

Feature Summary

• Programmable delay matrix using multiplexers allows precise timing adjustments in 10 ps increments.
• Supports cascading multiple devices via D10 control pins to extend programmable delay range without external gating.
• Accepts LVPECL, LVNECL, and LVDS signal levels at the IN/IN inputs.
• Includes an internally generated VBB reference voltage output for single-ended input configurations.

Applications

• Multiple channel deskewing to eliminate timing skews caused by impedance or cable length differences.
• Measuring unknown high-speed device delays by correlating programmed delay values with flip-flop outputs.
• Fine-tuning high-speed systems to reduce skew to tight tolerances.

Procurement Notes

Verify the specific suffix 'FAR2G' against official documentation, as standard datasheets list 'FA' for LQFP-32 trays and 'MNG' for QFN-32 rails. Confirm RoHS compliance status and moisture sensitivity level requirements during storage and handling. Ensure power supply decoupling meets thermal resistance specifications for the selected package type.

Selection Notes

Select this component for applications requiring sub-nanosecond programmable delay resolution. Ensure the design accommodates the fixed minimum delay of 2.2 ns inherent to the multiplexer chain architecture. Verify compatibility with LVCMOS, LVTTL, or ECL logic levels for the data select inputs by configuring VCF and VEF pins appropriately.

Part Context

This device belongs to the onsemi 100EP series of ECL components, which are characterized by high-speed operation and temperature compensation. The EP195B variant specifically addresses timing alignment needs in high-frequency digital systems where precise phase matching between multiple channels is critical.

Replacement Considerations

MC100EP195FAR2G is listed as a direct replacement for the obsolete MC100EP195FAR2. Verify pinout and electrical characteristics match before substitution.