18QHTF21-18.87436-PD

Oscillators Overview

The 18QHTF21-18.87436-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 18.87436 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly.

Oscillators Feature Summary

• Supports LVCMOS output interface for digital signal compatibility
• Integrates standby mode for power management efficiency
• Utilizes low-profile SMD package for space-constrained designs

Oscillators Applications

• Digital communication systems requiring precise clock signals
• Embedded microcontroller clock sources
• Consumer electronics with limited board space

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout specifications. Cross-reference the datasheet for operating temperature ranges to guarantee reliability under your application's environmental conditions.

Oscillators Selection Notes

Select this component when a stable 18.87436 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V operation if your system uses low-voltage logic families. The integrated power-down feature makes it suitable for battery-operated devices where standby current reduction is critical. Evaluate the small 2.0x1.6 mm package size against available board real estate constraints.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within the same physical footprint. The series is characterized by its use of quartz crystal technology for frequency stability. Mercury Electronics is a recognized manufacturer of frequency control products, including crystals and oscillators, with a history dating back several decades in the industry.

Oscillators Replacement Considerations

Direct replacements must match the 18.87436 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Alternative parts from other manufacturers may require schematic adjustments if supply voltages or output logic levels differ.