18QHTF21-44.800-PD

Oscillators Overview

The 18QHTF21-44.800-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 44.8 MHz and utilizes LVCMOS output logic for digital signal interfacing. The device requires a supply voltage of 1.8V and features a power-down function accessible via a standby control input to reduce consumption when inactive. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for space-constrained surface-mount applications.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS output compatibility
• Includes standby mode functionality for power-down capability
• Utilizes a small-footprint 4-SMD no-lead surface mount package

Oscillators Applications

• Digital clock generation for embedded systems
• Timing reference for communication interfaces
• Power management circuits requiring precise frequency control

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application environment before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's jitter specifications. Ensure the PCB layout accommodates the 2.0x1.6mm footprint and provides adequate grounding for the SMD no-lead package to maintain signal integrity.

Oscillators Selection Notes

Select this component when a low-profile, low-voltage oscillator is required for 44.8 MHz timing applications. Consider the LVCMOS output level compatibility with downstream logic families. Evaluate the need for power-down functionality versus continuous operation based on system energy constraints. Compare package dimensions against available board real estate to ensure mechanical fit.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized 2.0x1.6mm form factor. The 'PD' suffix indicates the inclusion of a power-down pin or feature, distinguishing it from standard non-power-managed variants in the same physical package family.

Oscillators Replacement Considerations

Direct substitutes must match the 44.8 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify equivalent electrical parameters such as phase noise and duty cycle. Check if alternative manufacturers offer compatible pinouts and thermal characteristics for seamless integration.