18QHTF21-13.605-PD

Overview

The 18QHTF21-13.605-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.605 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down function accessible via a standby mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down capability for energy management
• Utilizes LVCMOS output interface

Applications

• General-purpose clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly errors during manufacturing.

Selection Notes

Select this component when a precise 13.605 MHz reference is required in space-constrained designs. The choice is driven by the need for low voltage compatibility and integrated power management features. Consider the small form factor as a primary advantage for dense circuit board layouts where standard packages do not fit.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The series is characterized by small surface-mount packages and low-power operation. Mercury Electronics has a long history in the Taiwan quartz industry, providing reliable timing solutions for various consumer and industrial electronics applications.

Replacement Considerations

Direct substitutes include other 13.605 MHz LVCMOS oscillators in 2.0x1.6mm packages from compatible manufacturers. Verify pinout compatibility and electrical parameters such as current consumption and startup time. Ensure the replacement part supports the same 1.8V supply and power-down functionality.