DS1077LZ-40+

Overview

The DS1077LZ-40+ is a dual-output, programmable fixed-frequency oscillator from the EconOscillator family. It operates on a single 2.7V to 3.6V supply with an active current of 15mA and standby current of 10µA. The device features two synchronous outputs (OUT0 and OUT1) with frequencies adjustable from 4.87kHz to 40MHz using internal prescalers and dividers. Frequency settings are stored in nonvolatile EEPROM memory. It includes a 2-wire serial interface for programming and supports standard (100kHz) and fast (400kHz) modes.

Feature Summary

• Dual synchronous outputs with independent frequency control via programmable prescalers and dividers
• Nonvolatile EEPROM storage retains frequency settings across power cycles
• 2-wire serial interface supporting 100kHz and 400kHz clock rates
• Low power consumption: 15mA active, 10µA in power-down mode

Applications

• Processor-controlled frequency synthesizers
• Stand-alone solid-state oscillators
• System clock generation requiring minimal board area

Procurement Notes

Verify the package type matches the 'Z' suffix for 8-pin 150mil SOIC. Confirm the frequency option corresponds to the '-40' designation for a 40MHz master clock range. Ensure the 2-wire serial interface voltage levels are compatible with the host controller. Check RoHS compliance status if required by specific manufacturing standards.

Selection Notes

Select this model when a dual-output oscillator with nonvolatile frequency storage is needed. The -40 variant provides a master frequency up to 40MHz, allowing output frequencies down to 4.87kHz. Consider the µSOP package (LU suffix) if space constraints require a smaller footprint. Verify that the 2-wire interface can be accommodated in the design or bypassed for fixed-frequency applications.

Part Context

The DS1077LZ-40+ belongs to the DS1077L series of 3V EconOscillators. The 'Z' suffix indicates an 8-pin 150mil SOIC package, while 'U' denotes an 8-pin 118mil µSOP. The '-40' specifies the master frequency option, enabling output frequencies between 4.87kHz and 40MHz. Other variants include -50, -60, and -66 for higher master frequencies.

Replacement Considerations

Direct replacements within the same series include DS1077LU-40+ (µSOP package) or other frequency options like DS1077LZ-50+. Cross-family replacements may require verification of pin compatibility and electrical specifications.