18QHTF21-77.750-OE

Overview

The 18QHTF21-77.750-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 77.75 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features an enable/disable control capability for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise clock signals within low-voltage digital systems.

Feature Summary

• Provides stable 77.75 MHz clock signal generation
• Supports low-voltage operation at 1.8V
• Includes enable and disable functionality for power control
• Utilizes LVCMOS output logic interface

Applications

• Digital system clocking
• Communication equipment timing
• Embedded processor interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable pin logic levels are compatible with your controlling microcontroller or FPGA to ensure proper activation and deactivation of the oscillator during operation.

Selection Notes

Select this model when a 77.75 MHz frequency is required alongside a 1.8V supply constraint. The small 2.0x1.6 mm footprint makes it suitable for space-constrained designs. Consider the LVCMOS output compatibility with downstream logic families. Verify thermal performance if the operating environment exceeds standard commercial temperature ranges.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on surface-mount oscillators. The series offers various frequencies tailored for high-density electronic assemblies. The 'OE' suffix typically denotes specific packaging or ordering configurations within the manufacturer's catalog, ensuring traceability and consistent quality standards across production batches.

Replacement Considerations

Direct substitutes must match the 77.75 MHz frequency, 1.8V supply, and 4-SMD 2.0x1.6mm footprint. Check equivalent models from other manufacturers offering LVCMOS outputs with enable pins. Ensure pinout compatibility and electrical characteristics such as phase noise and jitter meet original specifications.