18QHTF21-13.570-PD

Overview

The 18QHTF21-13.570-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.57 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode to minimize energy consumption during inactive periods. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained printed circuit board layouts.

Feature Summary

• Integrates LVCMOS output interface for direct digital logic compatibility
• Supports active and standby power-down modes for efficient power management
• Utilizes a leadless surface-mount package for automated assembly

Applications

• Battery-powered portable electronic devices
• Low-voltage digital signal processing systems
• Compact consumer electronics requiring minimal footprint

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target system design before procurement. Confirm that the 1.8V supply rail is stable within the operational specifications. Ensure the PCB layout accommodates the 2.0x1.6mm no-lead package dimensions and thermal relief requirements for reliable soldering.

Selection Notes

Select this component when a precise 13.57 MHz clock source is required with strict power constraints. The 1.8V operating voltage makes it suitable for modern low-voltage logic families. Consider the physical size and leadless package type if high-density board space is limited compared to larger oscillator packages.

Part Context

This model belongs to the Mercury QHTF series of quartz crystal oscillators. The series typically offers various 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 continuously running variants in the same form factor family.

Replacement Considerations

Direct substitutes include other 13.57 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in the existing circuit design.