DS1077LZ-66

Overview

The DS1077LZ-66 is a dual-output, programmable, fixed-frequency oscillator from the EconOscillator family. It operates on a single 2.7V to 3.6V supply and requires no external components. The device features a 2-wire serial interface for in-circuit programming of prescalers and dividers, with settings stored in nonvolatile EEPROM. It provides two synchronous outputs ranging from 4.87kHz to 66.666MHz. Key specifications include ±0.5% initial tolerance, ±1.25% variation over temperature and voltage, and low jitter performance.

Feature Summary

• Dual low-jitter, synchronous fixed-frequency outputs
• 2-wire serial interface for on-the-fly frequency changes
• Nonvolatile EEPROM storage for frequency settings
• Single 2.7V to 3.6V supply operation

Applications

• Processor-controlled frequency synthesizers
• Stand-alone clock generation
• System clock distribution

Procurement Notes

Verify the specific package option (Z for SO or U for µSOP) when ordering, as the suffix denotes the physical footprint. Confirm that the master frequency requirement aligns with the -66 standard option range. Check for end-of-life status or alternative sourcing if production continuity is required.

Selection Notes

Select the DS1077LZ-66 when a master frequency up to 66.666MHz is needed. Ensure the application supports the 2-wire serial interface for configuration if dynamic frequency changes are required. Verify power supply stability within the 2.7V to 3.6V range to maintain specified jitter and tolerance parameters.

Part Context

The DS1077L series includes variants with different master frequencies: -40 (40MHz), -50 (50MHz), -60 (60MHz), and -66 (66.666MHz). The Z suffix indicates an 8-pin 150mil SO package, while U indicates an 8-pin 118mil µSOP package. All variants share identical functional characteristics and pinouts.

Replacement Considerations

Direct replacements within the same family include DS1077LU-66+ for the µSOP package variant. Other frequency options like DS1077LZ-50 or DS1077LZ-40 may be used if the master frequency difference is acceptable for the application design.