18QHTF21-27.78726-PD

Oscillators Overview

The 18QHTF21-27.78726-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 27.78726 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby capability to reduce power consumption during inactive periods
• Utilizes a leadless SMD package for efficient board space utilization

Oscillators Applications

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

Oscillators Procurement Notes

Verify the specific ordering suffix PD confirms the power-down feature against official Mercury Electronics documentation. Ensure the 1.8V supply requirement aligns with target system design. Confirm the 4-SMD no-lead footprint matches PCB layout specifications before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a 27.78726 MHz reference is required with LVCMOS outputs. Consider the 1.8V operating voltage for compatibility with modern low-power logic families. The standby feature offers energy efficiency benefits compared to continuously active oscillators in battery-operated devices.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series designed for standard frequency generation. The model number indicates a specific frequency variant within the 18QHTF21 family. It represents a solution for applications needing stable clock signals in small form factor electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 27.78726 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics with alternative manufacturers before integration.