18QHTF21-27.030-PD

Oscillators Overview

The 18QHTF21-27.030-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 27.03 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is engineered for applications requiring precise timing signals within low-power electronic systems.

Oscillators Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic for digital interface compatibility
• Includes Standby or Power Down functionality to reduce power consumption when inactive
• Utilizes a lead-free surface-mount package design for automated assembly integration

Oscillators Applications

• General purpose clock signal generation in embedded systems
• Timing reference sources for microcontrollers and processors
• Data communication interfaces requiring stable frequency standards

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations defined in the official datasheet for your environmental conditions.

Oscillators Selection Notes

Select this component when a low-profile, 1.8V powered oscillator is required for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the 27.03 MHz frequency specifically if it matches your system clock needs without requiring frequency multiplication or division stages. Evaluate the standby feature benefits for battery-operated devices where power efficiency is critical during idle periods.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically offers various frequency options within a standardized 2.0x1.6 mm package. The 'PD' suffix indicates the inclusion of a power-down pin, distinguishing it from continuous-operation variants. Mercury Electronics leverages its expertise in quartz technology to provide reliable frequency control solutions for consumer and industrial electronics.

Oscillators Replacement Considerations

Direct replacements must match the 27.03 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility, particularly the standby control pin assignment. Cross-reference with other manufacturers offering similar SMD oscillators, ensuring electrical parameters like phase noise and jitter meet original specifications.