18QHTF21-12.045-PD

Overview

The 18QHTF21-12.045-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.045 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby function for power down control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports Standby mode for power management
• Utilizes LVCMOS output logic
• Compact 4-SMD No Lead package

Applications

• Battery-powered portable devices
• General electronic circuits requiring clock signals

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Confirm that the 1.8V supply requirement aligns with the target system design. Ensure the 4-SMD No Lead package footprint matches the PCB layout constraints to guarantee proper assembly and electrical connectivity.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a small form factor. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency during idle periods is a critical design parameter for the application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series includes various frequencies such as 15.7 MHz and 51.2 MHz, all sharing similar packaging and voltage characteristics. Mercury Electronics has a history of manufacturing quartz crystals since 1973.

Replacement Considerations

Direct substitutes within the same series include 18QHTF21-12.000-PD or other variants with matching 1.8V and LVCMOS specifications. Verify pinout and dimensional compatibility before replacing.