MC100E310FNR2

Clock Buffers, Drivers Overview

The MC100E310FNR2G is a low voltage, low skew 2:8 differential ECL fanout buffer designed for clock distribution. It features fully differential clock paths to minimize device and system skew, with two selectable clock inputs (CLKa/CLKb) for redundant or test clock integration. The device operates in PECL mode (VCC = 4.2 V to 5.7 V, VEE = 0 V) or NECL mode (VCC = 0 V, VEE = -4.2 V to -5.7 V). Key electrical parameters include a maximum toggle frequency of 900 MHz, typical propagation delay of 525 ps, part-to-part skew of 200 ps, and within-device skew of 50 ps. Power supply current is typically 60 mA at 25°C.

Clock Buffers, Drivers Feature Summary

• Dual differential fanout buffers with 2:8 output configuration
• Low skew performance: 50 ps within-device skew, 200 ps part-to-part skew
• Selectable clock inputs (CLKa/CLKb) via CLK_SEL pin
• Internal input 50 kΩ pulldown resistors and ESD protection (>2 kV HBM)
• Temperature compensated operation from -40°C to +85°C

Clock Buffers, Drivers Applications

• Clock distribution networks requiring low skew
• Redundant clock tree architectures
• High-speed digital systems using PECL or NECL logic families

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'R2G' corresponds to the PLCC-28 tape and reel packaging containing 500 units. Confirm RoHS compliance and lead-free status as specified in the ordering information table. Ensure moisture sensitivity level 3 handling procedures are followed during assembly.

Clock Buffers, Drivers Selection Notes

Select this component when low skew differential clock buffering is required for 2:8 fanout applications. Compare propagation delay specifications against system timing budgets. Verify that the operating voltage range matches the target PECL or NECL power supply configuration. Consider the thermal resistance values if high ambient temperatures are expected.

Clock Buffers, Drivers Part Context

The MC100E310 belongs to the onsemi 100E Series, which includes temperature compensation. It is part of the ECLinPS family of high-performance ECL devices. The FNR2G suffix indicates a Pb-Free package in a 500-unit tape and reel format, distinct from the tube-packaged FNG variant.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Designers should consult application notes AN1405/D and AN1406/D for interfacing guidelines and alternative ECL components.