DS1077U-120+T&R

Overview

The DS1077U-120+T&R is a dual-output, programmable fixed-frequency oscillator in an 8-pin µSOP package. It operates on a single 5V supply (4.75V to 5.25V) with active current of 50mA and standby current of 5µA. The device provides two synchronous outputs: OUT0 (reference) and OUT1 (main). Frequency ranges from 8.1kHz to 133MHz using internal prescalers and a programmable divider. It features a 2-wire serial interface for on-the-fly programming, with settings stored in nonvolatile EEPROM. Operating temperature is -40°C to +85°C.

Feature Summary

• Dual low-jitter synchronous outputs (OUT0 and OUT1)
• 2-wire serial interface for frequency adjustment
• Nonvolatile EEPROM storage for frequency settings
• Power-down mode with 5µA standby current

Applications

• Processor-controlled frequency synthesizers
• Standalone clock generation systems
• In-circuit programmable timing applications

Procurement Notes

Verify the 'U' suffix indicates the 8-pin 118mil µSOP package. Confirm the '120' designation corresponds to the 120MHz master frequency option. Ensure the '+T&R' suffix matches the required reel packaging format for surface-mount assembly.

Selection Notes

Select this model for applications requiring a 5V supply and dual synchronous outputs. The µSOP package is suitable for space-constrained designs. Verify that the 2-wire serial interface compatibility exists with the host controller. Consider power consumption if battery operation is required due to the 50mA active current.

Part Context

This component belongs to the DS1077 EconOscillator family, which includes variants like DS1077Z (SO package) and other frequency options such as 133MHz or 100MHz. The U suffix specifically denotes the smaller µSOP footprint compared to the standard SO package.

Replacement Considerations

DS1077Z-120+T&R offers identical electrical performance in an 8-pin SO package instead of µSOP.