DS1077LU-50

Overview

The DS1077LU-50 is a dual-output programmable oscillator and clock generator from the EconOscillator family, manufactured by Analog Devices / Maxim Integrated. It operates within a supply voltage range of 2.7 V to 3.6 V and supports output frequencies up to 50 MHz. The device utilizes a 2-Wire serial interface for configuration and is housed in an 8-pin uMAX or uSOP package with dimensions of approximately 118 mils. It functions as a fixed-frequency oscillator capable of replacing discrete crystal and resonator components in digital systems.

Feature Summary

• Dual-output architecture providing synchronized clock signals
• 2-Wire serial interface for frequency programming and control
• Single 3V supply operation (2.7 V to 3.6 V)
• Maximum output frequency of 50 MHz

Applications

• Microcontroller system clock generation
• Real-time clock synchronization
• Memory subsystem timing

Procurement Notes

The DS1077LU-50 is listed as End-of-Life (EOL) by the manufacturer. Availability is restricted, with limited stock held by distributors such as Mouser and Rochester Electronics. Verification of RoHS compliance is required, as some listings indicate non-compliance while others suggest lead-free variants exist under different suffixes. Buyers should confirm the specific revision and packaging status before procurement.

Selection Notes

Select the DS1077LU-50 when a low-cost, single-supply programmable oscillator is needed for 3V logic systems. Ensure the design supports the 2-Wire interface protocol. For RoHS-compliant requirements, verify if the '+' suffix variant is available or if a pin-compatible alternative from the same family meets environmental standards. Check package availability between uMAX and uSOP options.

Part Context

This component belongs to the DS1077 EconOscillator series, designed to replace traditional crystal oscillators and dividers. It integrates the oscillator circuit and divider logic into a single IC. Related parts include the DS1077Z series for 5V applications and other frequency variants like the DS1077LU-40.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source material. Designers should consult the official datasheet for recommended pin-compatible replacements or next-generation alternatives from the Analog Devices portfolio.