18QHTF21-111.375-PD

Overview

The 18QHTF21-111.375-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 111.375 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 on printed circuit boards.

Feature Summary

• LVCMOS output interface for digital signal compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific ordering suffix and frequency tolerance against project requirements before purchase. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications. Check for any specific handling instructions related to the surface-mount technology used in this component.

Selection Notes

Select this oscillator when a precise 111.375 MHz reference is required for LVCMOS-compatible circuits. The choice is driven by the need for low-voltage operation at 1.8V and the integration of a power-down feature for efficiency. The small 2.0x1.6 mm form factor makes it appropriate for space-constrained designs requiring high-frequency stability.

Part Context

This component belongs to the Mercury Electronics 18QHTF21 series of standard crystal oscillators. The series is characterized by its use of quartz resonator technology for stable frequency generation. The manufacturer specializes in frequency control products, including crystals and oscillators, providing timing solutions for various electronic applications.

Replacement Considerations

Direct substitutes must match the 111.375 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as load capacitance and drive level to ensure functional equivalence in the existing circuit design.