18QHTF21-1.0025-OE

Overview

The 18QHTF21-1.0025-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.0025 MHz and utilizes an LVCMOS output signal format. The device functions with a supply voltage of 1.8V and includes enable/disable control functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• LVCMOS output signal format for digital logic compatibility
• Integrated enable and disable control functionality
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose timing circuits
• Embedded systems requiring low-frequency clock sources
• Portable electronic devices with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system power rails. Ensure the 4-SMD no-lead footprint matches the PCB layout design specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a precise 1.0025 MHz clock signal is required within a minimal footprint constraint. The LVCMOS interface suits direct connection to microcontrollers or FPGAs without additional buffering. The enable pin allows for power management strategies in battery-operated applications. Verify thermal performance and stability requirements against the manufacturer's published specifications for the intended operating environment.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages, all sharing the same compact 2.0x1.6 mm package. The 'OE' suffix typically denotes the enable pin configuration, distinguishing it from other variants like 'PD' which may have different control characteristics.

Replacement Considerations

Direct replacements must match the 1.0025 MHz frequency, 1.8V operation, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility, specifically the enable function location. Cross-reference with other manufacturers offering similar small-form-factor XO components ensuring identical electrical parameters and mounting dimensions.