18QHTF21-110.500-PD

Overview

The 18QHTF21-110.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 110.5 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a power-down capability for standby mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-power standby operation via power-down functionality
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed for space-constrained applications with a small surface-mount footprint

Applications

• Battery-powered electronic devices
• Portable consumer electronics
• Digital communication systems requiring precise clock signals

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail is stable and within the specified operating range to maintain signal integrity. Confirm that the PCB layout accommodates the 2.0x1.6 mm package dimensions and soldering specifications for leadless SMD components.

Selection Notes

Select this component when a 110.5 MHz clock source is required with low voltage operation. Consider the LVCMOS output compatibility with downstream digital logic. Evaluate the power-down feature if energy efficiency during idle states is a critical design parameter. Compare physical size constraints against alternative packages in the same series.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies and supply voltages. The series typically includes options for different output logic levels and package sizes. The 'PD' suffix indicates the inclusion of a power-down control pin or function, distinguishing it from standard continuous-operation oscillators in the lineup.

Replacement Considerations

Direct substitutes must match the 110.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar surface-mount oscillators if Mercury Electronics inventory is unavailable.

FAQ

Does the 18QHTF21-110.500-PD support power-down mode?

Yes, the datasheet indicates Standby (Power Down) capability for this model.

What is the output logic type for this oscillator?

The device uses LVCMOS (Low Voltage Complementary Metal-Oxide-Semiconductor) output logic.