18QHTF21-2.540-PD

Oscillators Overview

The 18QHTF21-2.540-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 2.54 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Power Down (PD) control function to manage standby power consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Includes Power Down functionality to reduce current consumption during inactive periods
• Utilizes a low-profile 4-SMD No Lead package for efficient board space utilization

Oscillators Applications

• General purpose clock signal generation in embedded systems
• Timing reference for microcontrollers operating at low frequencies
• Consumer electronics requiring precise timekeeping functions

Oscillators Procurement Notes

Verify the specific suffix 'PD' confirms the Power Down feature against the official datasheet. Ensure the 1.8V supply requirement aligns with the target system design. Confirm the 4-SMD No Lead package dimensions match the PCB footprint specifications before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a 2.54 MHz clock source is required with low power consumption capabilities. The 1.8V operating voltage makes it suitable for modern low-voltage digital circuits. The Power Down feature provides an advantage for battery-operated devices where standby efficiency is critical.

Oscillators Part Context

This part belongs to the QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The 18QHTF21 variant specifically denotes the 1.8V supply version within this product line, distinguishing it from higher voltage counterparts.

Oscillators Replacement Considerations

Cross-reference with other 2.54 MHz LVCMOS oscillators featuring Power Down control. Verify pinout compatibility and package dimensions for direct replacement. Ensure equivalent frequency stability and load capacitance requirements are met by potential substitute components.