18QHTF21-27.195-PD

Oscillators Overview

The 18QHTF21-27.195-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 27.195 MHz. It utilizes LVCMOS output logic and supports a supply voltage of 1.8V. The device features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package, designed for surface mount applications.

Oscillators Feature Summary

• LVCMOS output logic interface
• Standby power down capability
• Surface mount 4-SMD no lead package

Oscillators Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 27.195 MHz clock source is required with low power consumption due to the 1.8V operation. The LVCMOS output is suitable for interfacing with standard digital logic families. Consider the small form factor of the 4-SMD package for space-constrained designs requiring surface mount technology integration.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators. The model number indicates the specific frequency and package type within the product line. Mercury Electronic has been manufacturing frequency control products since 1973, offering quartz crystals and oscillators for various industrial and commercial applications.

Oscillators Replacement Considerations

Direct substitutes must match the 27.195 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical characteristics with alternative manufacturers to ensure seamless integration without redesigning the host circuit board or power supply constraints.