MC10EL34D

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC10EL34D is a clock generation integrated circuit manufactured by onsemi, belonging to the MC10/100ECL series. It functions as a low skew ÷2, ÷4, and ÷8 divider designed for high-speed synchronization applications. The device operates in PECL mode with a supply voltage range of 4.2 V to 5.7 V (VEE = 0 V) or NECL mode with VCC = 0 V and VEE between −4.2 V and −5.7 V. It features internal 75 kΩ pulldown resistors on CLK, EN, and MR inputs. The component is housed in an 8-SOIC surface-mount package and supports synchronous enable/disable and master reset functions.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Low skew clock generation with specified output-to-output skew of 50 ps
• Supports ÷2, ÷4, and ÷8 division ratios for flexible frequency synthesis
• Dual-mode operation compatible with PECL (4.2V–5.7V) and NECL (-4.2V to -5.7V) standards
• Integrated synchronous enable/disable and master reset capabilities

Clock Generators, PLLs, Frequency Synthesizers Applications

• Low skew clock distribution networks
• Synchronous data acquisition systems
• High-speed communication infrastructure timing
• Test and measurement equipment requiring precise clock alignment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-8 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation, as historical revisions may vary. Ensure input voltage levels strictly adhere to the defined PECL or NECL operating ranges to prevent functional failure. Cross-reference the datasheet revision date to confirm pinout and electrical parameter consistency.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when differential ECL signaling is required alongside precise phase alignment. The 50 ps output skew specification makes it suitable for multi-channel systems where timing jitter must be minimized. Verify that the system power supply can maintain the required 4.2 V to 5.7 V range for stable PECL operation. Consider the 8-SOIC package constraints for PCB layout density compared to larger TSSOP alternatives.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MC10/100ECL family, which provides high-speed logic solutions for telecommunications and industrial applications. The MC10EL34D specifically addresses clock distribution needs within this portfolio. It shares functional similarities with other dividers in the series but is distinct in its specific division ratios and package configuration. The 'D' suffix typically denotes the SOIC-8 plastic package variant within the manufacturer's coding system.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes include the MC100EL34DG for lead-free compliance in identical packaging. For pin-compatible alternatives, verify other ÷2/÷4/÷8 dividers from the same ECL family. Ensure replacement parts support the same PECL/NECL voltage thresholds and skew specifications.