DS1077U-100+

Overview

The DS1077U-100+ is a dual-output, programmable fixed-frequency oscillator from the EconOscillator family. It operates on a single 5V supply and requires no external components. The device features two synchronous outputs (OUT0 and OUT1) with frequencies ranging from 8.1kHz to 133MHz. It utilizes a 2-wire serial interface for on-the-fly programming of prescalers and dividers. Frequency settings are stored in nonvolatile EEPROM memory, allowing the device to default to programmed values upon power-up. The U suffix indicates an 8-pin 118mil µSOP package.

Feature Summary

• Dual low-jitter, synchronous fixed frequency outputs
• 2-wire serial interface for processor control or standalone operation
• Nonvolatile EEPROM storage for frequency settings
• Single 5V supply operation with power-down mode

Applications

• Processor-controlled frequency synthesizers
• Standalone clock generation for microcontrollers
• System clock distribution requiring minimal board area

Procurement Notes

Verify the ordering suffix 'U' corresponds to the 8-pin 118mil µSOP package. Confirm the '-100' designation matches the required 100MHz master frequency range (100.000MHz to 12.2kHz). Ensure the 2-wire serial interface requirements align with the system controller capabilities.

Selection Notes

Select this component when a dual-output clock source with nonvolatile frequency retention is needed. The DS1077U-100+ is suitable for applications requiring frequencies up to 133MHz with ±0.5% initial tolerance. Consider the 8-pin footprint constraints and the need for a 5V supply rail. Verify if the 2-wire interface speed (Standard/Fast mode) meets the system timing requirements.

Part Context

The DS1077 series includes variants like DS1077Z-100+ (SO package) and other frequency options such as -66, -120, -125, and -133. The U suffix specifically denotes the µSOP package option. Other parts in the family share similar internal architecture but differ in package type and factory-trimmed master frequencies.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.