18QHTF21-28.0777-PD

Oscillators Overview

The 18QHTF21-28.0777-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 28.0777 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down control capabilities
• Provides LVCMOS digital output signals

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints. Check for any specific manufacturing date codes or lot traceability requirements if applicable to the production batch.

Oscillators Selection Notes

Select this component when a precise 28.0777 MHz reference is required in space-constrained applications. The choice is driven by the need for low voltage operation and integrated power management features. Consider the thermal performance and stability characteristics relative to the operating environment. Evaluate the trade-off between size and electrical performance compared to larger packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically offers various frequencies within a standardized 2.0x1.6mm package. It represents a solution for modern electronics demanding miniaturization without sacrificing timing accuracy. The manufacturer has established expertise in quartz-based frequency control products since 1973.

Oscillators Replacement Considerations

Direct substitutes may include other 28.0777 MHz LVCMOS oscillators in a 2.0x1.6mm SMD package from different manufacturers. Verify pin compatibility and voltage levels before swapping. Alternative parts must meet the same frequency stability and phase noise specifications. Ensure the replacement supports the required standby functionality.