18QHTF21-28.57953-PD

Oscillators Overview

The 18QHTF21-28.57953-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 28.57953 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 to manage energy consumption. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates standby mode functionality for power management
• Utilizes a leadless SMD package design for space-constrained applications

Oscillators Applications

• Digital signal processing systems requiring precise clock timing
• Communication equipment utilizing standard frequency references
• Embedded control units with low-voltage power constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and phase noise specifications against the official datasheet prior to integration. Confirm that the 1.8V supply requirement aligns with the target system's power rails. Ensure the leadless package footprint matches the PCB land pattern design to guarantee reliable soldering and mechanical stability during operation.

Oscillators Selection Notes

Select this component when a standard frequency reference near 28.58 MHz is required with low-voltage operation. Consider the LVCMOS output level if interfacing directly with 1.8V logic families. Evaluate the need for power-down capabilities in battery-operated designs. Verify thermal performance within the specified operating temperature range for the intended environment.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various standard frequencies in a small form factor. The series typically supports 1.8V operation and includes power-down features. Similar models in the lineup differ primarily by their nominal output frequency, such as 28.636 MHz or 28.0 MHz variants, while maintaining consistent electrical characteristics and packaging.

Oscillators Replacement Considerations

Direct substitutes include other 28.57953 MHz XO components with matching 1.8V LVCMOS outputs and identical 4-SMD no-lead footprints. Cross-reference with Mercury Electronics' catalog for alternative frequencies if minor deviation is acceptable. Ensure any replacement maintains the same standby functionality and package dimensions for board compatibility.