DS1077U-133+

Overview

The DS1077U-133+ is a dual-output, programmable fixed-frequency oscillator from the EconOscillator/Divider family. It operates on a single 5V supply (4.75V to 5.25V) and requires no external components. The device features two synchronous outputs with frequencies derived from an internal master clock via programmable prescalers and dividers. Standard frequency options include up to 133.333MHz. Configuration is managed through a 2-wire serial interface, with settings stored in nonvolatile EEPROM memory for retention upon power-up.

Feature Summary

• Dual low-jitter, synchronous fixed-frequency outputs
• 2-wire serial interface for on-the-fly programming
• Nonvolatile EEPROM storage for frequency settings
• Single 5V supply operation with power-down mode

Applications

• Processor-controlled frequency synthesizers
• Standalone oscillators for digital systems
• Clock generation for microcontrollers and processors

Procurement Notes

Verify the ordering suffix 'U' corresponds to the 8-pin 118mil µSOP package. Confirm the '-133' suffix indicates the 133.333MHz standard frequency option. Ensure compatibility with the 2-wire serial interface protocol and 5V logic levels before integration.

Selection Notes

Select this model for applications requiring a 133.333MHz master frequency or its submultiples. The µSOP package is suitable for space-constrained designs. Consider the ±0.5% initial tolerance and temperature variation specifications when designing clock-critical circuits.

Part Context

This component belongs to the DS1077 series of EconOscillators. The 'U' suffix denotes the 8-pin µSOP package variant, while 'Z' denotes the SOIC package. The '133' indicates the specific factory-trimmed master frequency option available within the series.

Replacement Considerations

Other models in the DS1077 series, such as DS1077Z-133+, offer identical functionality in different packages. Frequency variants like DS1077U-125+ or DS1077U-120+ provide different master frequencies but share the same pinout and interface.