MC100EL15DR2

Clock Buffers, Drivers Overview

The MC100EL15DR2G is a discontinued low skew 1:4 clock distribution chip from onsemi, housed in an SOIC-16 package. It supports PECL mode (VCC = 4.2 V to 5.7 V) and NECL mode (VEE = -4.2 V to -5.7 V). Key electrical parameters include a maximum toggle frequency of 1.25 GHz, propagation delay ranging from 410 ps to 750 ps depending on the path, and output-to-output skew of 50 ps typical. The device features synchronous enable/disable, multiplexed clock input, and internal pull-down resistors.

Clock Buffers, Drivers Feature Summary

• Low skew 1:4 clock distribution with 50 ps typical output-to-output skew
• Multiplexed clock input allowing selection between differential system clock and scan/test clock
• Synchronous enable/disable to prevent runt clock pulses
• Internal VBB reference voltage pin for single-ended input biasing

Clock Buffers, Drivers Applications

• Low skew clock distribution networks
• System clock distribution with scan or test clock multiplexing
• PECL/NECL logic interface circuits

Clock Buffers, Drivers Procurement Notes

This component is officially marked as Discontinued by onsemi and is not recommended for new designs. Verification of availability should focus on surplus or secondary market sources rather than direct manufacturer production. Designers are advised to consult onsemi representatives for current alternatives.

Clock Buffers, Drivers Selection Notes

Select this part only for legacy maintenance or existing board revisions where the specific 1:4 ECL distribution function with multiplexing is required. Ensure compatibility with PECL or NECL power supply configurations. Due to discontinuation status, verify long-term supply chain stability before implementation.

Clock Buffers, Drivers Part Context

The MC100EL15 belongs to the MC10EL/MC100EL series of ECL clock distribution devices. The '100' prefix indicates temperature compensation features included in the 100 series. It is distinct from buffer or divider variants within the same family, specifically designed for fan-out applications.

Clock Buffers, Drivers Replacement Considerations

onsemi explicitly states this device is not recommended for new design. Contact onsemi sales representatives for information on suitable replacement parts or updated families that provide similar 1:4 ECL clock distribution capabilities.