18QHTF21-13.5444-PD

Overview

The 18QHTF21-13.5444-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.5444 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 2.0x1.6 mm.

Feature Summary

• Integrates a standby (power down) function to support power-sensitive applications
• Delivers LVCMOS output logic for standard digital interface compatibility
• Features a compact 4-SMD no lead surface mount package design

Applications

• Battery-powered electronic devices requiring low power consumption
• Power-sensitive portable systems
• General purpose timing clock generation

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target circuit's power rails. Ensure the 2.0x1.6 mm footprint matches your PCB layout constraints. Cross-reference the manufacturer part number with distributor catalogs to ensure availability and correct revision levels.

Selection Notes

Select this component when a precise 13.5444 MHz reference is required alongside strict power management needs. The integrated standby mode makes it suitable for devices with sleep states. Consider the small form factor if space on the PCB is limited. Verify that LVCMOS signaling meets the input requirements of the connected microcontroller or FPGA.

Part Context

This model belongs to the QHTF series of quartz oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within similar small packages. The 'PD' suffix indicates the inclusion of a power-down capability, distinguishing it from standard continuous-operation variants in the same family.

Replacement Considerations

Direct substitutes include other 13.5444 MHz XO units with LVCMOS outputs and 1.8V operation in a 4-SMD 2.0x1.6mm package. Ensure the replacement also supports the standby function if power management is critical. Verify pinout compatibility and thermal characteristics before swapping.