18QHTF21-10.145-PD

Overview

The 18QHTF21-10.145-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.145 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 3.3V 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
• Includes standby capability to reduce power consumption during idle states
• Utilizes a leadless surface-mount package for automated assembly

Applications

• General clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Power management circuits requiring low-power standby modes

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 3.3V supply voltage aligns with the system's power rails. Ensure the 2.0x1.6mm footprint matches the PCB layout constraints. Cross-reference the datasheet for operating temperature ranges to guarantee reliability under environmental conditions.

Selection Notes

Select this component when a precise 10.145 MHz timing source is required with low power consumption capabilities. The LVCMOS output is suitable for standard digital logic families. Consider the small form factor for space-constrained designs. Evaluate the need for a power-down feature to extend battery life in portable applications compared to continuous-operation oscillators.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6mm SMD package. The series typically provides options for different supply voltages and output types. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from basic XO variants without standby functionality.

Replacement Considerations

Direct substitutes must match the 10.145 MHz frequency, 3.3V operation, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility if replacing with parts from other manufacturers. Ensure equivalent electrical specifications such as phase noise and stability are met for the specific application.