18QHTF21-18.816-PD

Oscillators Overview

The 18QHTF21-18.816-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.816 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and supporting a standby or power-down mode to reduce energy consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly in space-constrained electronic designs.

Oscillators Feature Summary

• Supports low-voltage operation with 1.8V supply
• Includes standby functionality for power management
• Utilizes LVCMOS output interface

Oscillators Applications

• General-purpose digital clock generation
• Low-power embedded systems requiring precise timing
• Consumer electronics with space constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure compatibility with the LVCMOS input thresholds of downstream components. Check for any specific handling instructions related to the 4-SMD no-lead package during assembly.

Oscillators Selection Notes

Select this component when a precise 18.816 MHz reference is required in a low-voltage environment. The choice is driven by the need for integrated power-down capabilities to extend battery life in portable devices. Consider the physical dimensions of the 4-SMD package to ensure it fits within the available PCB real estate. Evaluate thermal performance if the device will operate continuously without entering standby mode frequently.

Oscillators Part Context

Mercury Electronic Ind., Co., Ltd. has been manufacturing frequency control products since 1973, establishing itself as a pioneer in the quartz crystal industry in Taiwan. The company leverages decades of expertise to produce reliable oscillators like the 18QHTF21 series. This model represents their capability to deliver standard XO solutions with modern low-power features, catering to industries demanding high stability and compact form factors.

Oscillators Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Users must verify pinout and electrical parameter compatibility if considering alternative manufacturers. Direct replacement requires matching the 18.816 MHz frequency, 1.8V supply, and LVCMOS output characteristics exactly.