18QHTF21-27.576-PD

Oscillators Overview

The 18QHTF21-27.576-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 27.576 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a 1.8V supply voltage. It features a Standby mode that allows for power-down functionality to reduce energy consumption when the oscillator is not in active use. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) capability for energy management
• Operates on a single 1.8V supply voltage

Oscillators Applications

• Digital signal processing circuits
• Communication equipment clocking
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific suffix PD against the manufacturer's current datasheet to confirm package and tape-and-reel specifications. Ensure the required operating temperature range aligns with the application environment. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Oscillators Selection Notes

Select this component when a 27.576 MHz clock source is required with LVCMOS compatibility. The 1.8V supply requirement dictates compatibility with low-voltage logic families. The Standby feature is critical for battery-powered or power-sensitive designs. Verify footprint constraints match the 4-SMD No Lead package dimensions.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 4-SMD package. The series typically supports 1.8V operation and LVCMOS outputs. Other variants in the series differ primarily by frequency and potentially enable/disable pin configurations, sharing the same physical form factor.

Oscillators Replacement Considerations

Direct substitutes include other 27.576 MHz XO oscillators with LVCMOS output and 1.8V operation in a 4-SMD No Lead package. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength before substitution.