18QHTF21-30.804-PD

Oscillators Overview

The 18QHTF21-30.804-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 30.804 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function for energy management. 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
• Compact 4-SMD no lead package

Oscillators Applications

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

Oscillators Procurement Notes

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

Oscillators Selection Notes

Select this component when a precise 30.804 MHz clock source is required with low power consumption capabilities. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency is critical. Verify that the operating temperature range meets the environmental conditions of the intended application environment.

Oscillators Part Context

This part belongs to the Mercury Electronics standard XO series, characterized by stable frequency generation using quartz resonators. The 18QHTF21 series typically offers reliable performance for consumer and industrial electronics. The -PD suffix indicates the inclusion of a power-down control pin, distinguishing it from continuously running variants within the same family.

Oscillators Replacement Considerations

Direct substitutes must match the 30.804 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter against the original datasheet to ensure functional equivalence in the circuit design.