MC100LVEL34DT

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC100LVEL34DT is a low skew clock generation chip designed for synchronous divide-by-2, divide-by-4, and divide-by-8 applications. It features internally synchronized dividers to ensure precise alignment of common output edges. The device supports PECL mode with VCC ranging from 3.0 V to 3.8 V (VEE = 0 V) and NECL mode with VEE ranging from -3.0 V to -3.8 V (VCC = 0 V). It operates at a maximum toggle frequency of 1.5 GHz with typical output-to-output skew of 50 ps. Key control inputs include a synchronous enable (EN) and a master reset (MR) for system synchronization. The DT suffix indicates a 16-lead TSSOP package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Synchronous ÷2, ÷4, ÷8 Clock Generation: Internally aligned divider stages minimize output skew.
• Low Skew Performance: Typical output-to-output skew of 50 ps ensures precise timing alignment.
• Flexible Input/Output Compatibility: Supports LVDS input conditions and differential ECL outputs.
• System Synchronization: Master Reset (MR) allows synchronization of internal dividers and multiple devices in a system.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Low skew clock distribution networks
• High-speed data acquisition systems requiring precise phase alignment
• Telecommunications equipment utilizing ECL logic families

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'DT' corresponds to the 16-lead TSSOP package (Case 948F) as defined in the manufacturer's ordering information. Confirm that the required supply voltage configuration matches either PECL (VCC=3.3V, VEE=0V) or NECL (VCC=0V, VEE=-3.3V) specifications before integration. Ensure proper decoupling of the VBB pin if utilized for single-ended input referencing.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when precise phase alignment among multiple divided clock signals is critical. The synchronous enable feature prevents runt pulses during state changes, making it suitable for systems requiring glitch-free clock gating. Consider the 1.5 GHz maximum toggle frequency limit and the 50 ps typical skew specification against system timing budgets. Verify thermal requirements for the TSSOP-16 package under expected ambient conditions.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MC100LVEL34 belongs to the onsemi 100LVEL series, which incorporates temperature compensation for stable performance across the industrial temperature range (-40°C to +85°C). This series is part of the broader ECLinPS family, designed for high-speed digital applications where speed and low jitter are paramount compared to standard CMOS or TTL logic families.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-compatible replacements within the same package may be limited due to specific internal divider configurations. Check for other members of the 100LVEL series with similar divide ratios and package types, ensuring electrical parameters such as propagation delay and power supply ranges remain compatible.