18QHTF21-15.777792-PD

Oscillators Overview

The 18QHTF21-15.777792-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 15.777792 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V. A key functional characteristic is the inclusion of a standby or power-down mode to further reduce energy consumption when the oscillator is not actively driving a load. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for space-constrained surface-mount designs.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated standby (power-down) functionality
• Low voltage operation at 1.8V
• Compact 4-SMD no-lead package

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Digital communication systems utilizing standard clock signals
• Embedded systems with limited voltage supply rails

Oscillators Procurement Notes

Verify the specific ordering suffix and frequency tolerance requirements against the official datasheet before procurement. Ensure that the 1.8V supply voltage aligns with the target system design. Confirm the 4-SMD package footprint matches the PCB layout constraints. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability of the components.

Oscillators Selection Notes

Select this component when a precise 15.777792 MHz clock signal is required within a low-voltage environment. The choice is driven by the need for LVCMOS compatibility and the necessity of a power-down feature for battery-operated applications. Consider the small 2.0x1.6 mm footprint if board space is limited. Evaluate thermal and electrical performance specifications against the specific operational conditions of the end product.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series typically offers various standard frequencies in a unified small form factor. Mercury Electronics has a long history in quartz crystal manufacturing, providing reliable timing solutions for global electronics markets. This specific model represents a standard XO variant optimized for modern low-power digital circuits.

Oscillators Replacement Considerations

Direct replacements must match the 15.777792 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and stability before substitution. Consult official cross-reference lists from Mercury Electronics for approved alternative part numbers.