18QHTF21-73.050-PD

Overview

The 18QHTF21-73.050-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 73.05 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features a dedicated standby or power-down mode to reduce power consumption
• Utilizes a surface-mount 4-SMD no-lead package design

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 73.05 MHz
• Embedded devices utilizing low-voltage 1.8V logic

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target application's power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the manufacturer datasheet for detailed electrical characteristics and operating temperature ranges to guarantee reliability.

Selection Notes

Select this component when a precise 73.05 MHz timing source is required within a low-profile form factor. The choice is driven by the need for LVCMOS compatibility and the ability to enter a low-power standby state. Consider the 1.8V operating voltage constraint and the physical space limitations defined by the 2.0x1.6mm package size during the initial design phase.

Part Context

This model belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series typically offers various standard frequencies and voltage options within a standardized small outline package. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuous-operation variants within the same family.

Replacement Considerations

Direct replacements must match the 73.05 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility and thermal characteristics. Alternative parts from other manufacturers require careful evaluation of jitter specifications and startup times to ensure functional equivalence.