BR-77.760MBE-T

Oscillators Overview

The BR-77.760MBE-T is a Voltage-Controlled Crystal Oscillator (VCXO) manufactured by TXC Corporation, operating at a nominal frequency of 77.76 MHz. It utilizes CMOS output format and functions within a supply voltage range of 3.3V. The component features a frequency stability of ±50 ppm and operates across an extended temperature range from -40°C to +85°C. Physically, it is housed in a surface-mount package measuring 7 mm x 5 mm. This standard clock oscillator is designed for applications requiring precise timing control with voltage tuning capabilities.

Oscillators Feature Summary

• Voltage-controlled crystal oscillator functionality allowing frequency adjustment via control voltage
• CMOS output compatibility for direct interfacing with digital logic circuits
• Extended industrial temperature rating ensuring reliable operation in harsh environments

Oscillators Applications

• Clock generation systems requiring frequency modulation or tuning
• Telecommunications equipment utilizing phase-locked loops
• Data communication interfaces needing stable reference signals

Oscillators Procurement Notes

Verify the specific part number against official TXC Corporation documentation to confirm availability and compliance status. Ensure that the required control voltage specifications match your system design before procurement. Check for any recent lifecycle changes or obsolescence notices directly from the manufacturer. Confirm RoHS compliance details through the latest datasheet revision. Validate package dimensions and pinout configurations against your PCB layout requirements.

Oscillators Selection Notes

Select this component when voltage-controlled frequency adjustment is necessary rather than fixed-frequency oscillation. Consider the 7x5mm package size for board space constraints compared to smaller series. Evaluate the ±50 ppm stability requirement against system jitter tolerance. Ensure the CMOS output drive capability meets downstream load requirements. Compare against other TXC series like QTM or 7X if voltage control is not strictly needed.

Oscillators Part Context

This part belongs to the BR Series of VCXOs from TXC Corporation, distinct from their standard XO lines like the 7X or QTM series. While similar in frequency and package options, the BR series specifically integrates voltage control circuitry. It differs from fixed-frequency models by offering tunability, making it suitable for PLL applications where frequency synthesis is required.

Oscillators Replacement Considerations

Direct replacements must be VCXOs with identical 77.76 MHz frequency, 3.3V supply, and 7x5mm SMD package. Verify that substitute parts support CMOS outputs and ±50 ppm stability. Cross-reference with TXC's official substitution guide for equivalent performance characteristics.