MC10EP139DTR2G

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC10EP139DTR2G is a low skew clock generation chip designed for high-speed applications. It integrates synchronous dividers to provide ÷2/4 and ÷4/5/6 frequency division outputs with precise edge alignment. The device supports PECL (VCC = 3.0 V to 5.5 V, VEE = 0 V) and NECL (VCC = 0 V, VEE = −3.0 V to −5.5 V) operating modes. Key electrical parameters include a maximum frequency exceeding 1.0 GHz, typical power supply current of 83 mA at 25°C, and output-to-output skew of 50 ps. It features a master reset for synchronization and an internal VBB reference voltage output.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Low skew clock generation with 50 ps output-to-output skew
• Synchronous dividers providing ÷2/4 and ÷4/5/6 outputs
• PECL mode: VCC = 3.0 V to 5.5 V, VEE = 0 V
• NECL mode: VCC = 0 V, VEE = −3.0 V to −5.5 V
• Maximum frequency > 1.0 GHz

Clock Generators, PLLs, Frequency Synthesizers Applications

• Low skew clock generation systems
• High-speed digital communication interfaces
• Test and measurement equipment requiring precise timing

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering suffix 'R2G' corresponds to the TSSOP-20 WB package in tape and reel format containing 2500 units. Confirm RoHS compliance and Pb-Free status as specified in the manufacturer's ordering information table. Ensure all VCC and VEE pins are externally connected to power supplies for proper operation.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when precise alignment between multiple divided clock outputs is required. The internal divider design ensures synchronization between the ÷2/4 and ÷4/5/6 sections. Consider the available divide ratios (÷2, ÷4, ÷5, ÷6) based on the DIVSEL input configuration requirements for the specific system architecture.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MC10EP139 family, which includes variants like MC10EP139DTG (tube) and MC10EP139DWG (SOIC). The DTR2G suffix specifically denotes the TSSOP-20 Wide Body package with tape and reel packaging. The datasheet also covers the MC100EP139 variant, which offers temperature compensation.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

MC10EP139DTG (Tube version)

Clock Generators, PLLs, Frequency Synthesizers FAQ

How does the enable signal affect the internal dividers?

The common enable (EN) is synchronous, ensuring that internal dividers are only enabled or disabled when the internal clock is already in the LOW state. This prevents the generation of runt clock pulses during state changes.

What is the function of the VBB pin?

The VBB pin provides an internally generated voltage reference. For single-ended inputs, unused differential inputs connect to VBB. It can also rebias AC-coupled inputs. If unused, it should be left open.

Why might the Master Reset (MR) be required upon start-up?

Upon start-up, internal flip-flops attain a random state. Asserting the Master Reset (MR) input ensures system synchronization by initializing the dividers to a known state.