18QHTF21-7.7328-PD

Overview

The 18QHTF21-7.7328-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 7.7328 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby power-down function for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals within low-power electronic systems.

Feature Summary

• Provides stable clock signals via LVCMOS output interface
• Supports power-down mode to reduce current consumption during standby
• Utilizes surface-mount packaging for automated assembly integration

Applications

• General-purpose digital circuit timing
• Microcontroller clock sources
• Low-power embedded systems

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm the 4-SMD package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet for your application environment.

Selection Notes

Select this component when a low-voltage, small-form-factor oscillator is required for standard digital interfaces. Consider the LVCMOS output compatibility with your downstream logic levels. Evaluate the power-down feature if battery life or thermal management is critical. Compare the physical dimensions against available board space to ensure mechanical fit within the final assembly.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which offers various frequencies within a standardized 2.0x1.6mm SMD package. The series typically supports 1.8V operation and includes power-down capabilities. It is part of Mercury's broader portfolio of quartz crystals and oscillators, established since 1973, focusing on Taiwan-manufactured frequency control solutions for global electronics markets.

Replacement Considerations

Direct substitutes must match the 7.7328 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise. Consult manufacturer cross-reference lists for equivalent parts from other suppliers offering identical form factors and performance metrics.